CPC · California Plumbing Code

Installer qualifications, job-site documentation and permanent test records

Q: What brazing records must be on the job site?

The brazing procedure specification and the record of brazer performance qualification (including coupon results and purge details) must be provided and maintained on site before installation begins per § 1323.10.2 and § 1323.11.3 .

Q: How long must standing pressure/vacuum tests be run?

Standing tests for both positive‑pressure systems and vacuum distribution are 24 hours per the standing‑test rules in Chapter 1324 (examples at § 1324.5.4.7 and § 1324.5.5.2 ).

Q: Who can witness the 24‑hour test?

For positive‑pressure tests an ASSE/IAPMO/ANSI 6020 inspector , an ASSE/IAPMO/ANSI 6030 verifier , or the Authority Having Jurisdiction (AHJ) (or designee) may witness the test; vacuum tests must be witnessed by the AHJ or designee. See § 1324.5.4.7 and § 1324.5.5.6 .

Q: What is the acceptable leakage for a 24‑hour vacuum test?

Leakage over the 24‑hour vacuum test must not exceed 0.5% of the starting pressure; the code provides the example 0.125 in HgV leakage starting at 25 in HgV . § 1324.5.5.5 .

Medical gas/vacuum installers must be ASSE/IAPMO/ANSI 6010‑certified; brazing procedure and brazer qualification records must be posted and kept on the job; 24‑hour standing pressure/vacuum tests (with specified pressures and ≤0.5% leakage for vacuum) must be witnessed by approved inspectors and documented before final verification.

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Last reviewed: July 6, 2026

What the code requires — in plain English

The installation of medical gas and vacuum systems must be done by qualified, certified installers — specifically certified to ASSE/IAPMO/ANSI 6010 — and brazing must be done only by brazers qualified per the code. See § 1323.10 (installers) and § 1323.10.2 (job‑site documentation) for the foundation of these requirements.
Pressure and vacuum acceptance tests (including 24‑hour standing tests) must be performed, witnessed, and documented; the code sets the test durations, allowable leakage, and who may witness the test. See the standing-test requirements in Chapter 1324 (e.g., § 1324.5.4.7 and § 1324.5.5).

The single most important rule: the installer must be certified and must keep the brazing‑qualification documentation on the job site, and all required 24‑hour standing tests must be witnessed and recorded before final verification.

Requirements in detail

Who may install (qualifications)

Qualified, competent technicians must perform medical gas and vacuum installations — this includes all personnel who actually install the piping. Installers must be certified to ASSE/IAPMO/ANSI 6010. § 1323.10 is the controlling provision.
Brazing must be performed by individuals qualified under the brazing qualification provisions (see § 1323.10.1 and § 1323.11 for brazing procedures and brazers).

Job‑site documentation (what to keep on site)

Prior to starting installation, the installer shall provide and maintain job‑site documentation for brazing‑procedure qualification and individual brazer qualification as required by § 1323.11 — this is explicitly called out in § 1323.10.2. Documentation must show the brazing procedure specification and records of brazer performance.

Permanent test records and witnessing

For positive‑pressure medical gas systems: a 24‑hour standing pressure test must be performed and witnessed by an ASSE/IAPMO/ANSI 6020 inspector, an ASSE/IAPMO/ANSI 6030 verifier, or the Authority Having Jurisdiction (AHJ) (or its designee). A form indicating that the test was performed and witnessed must be provided to the verifier at the start of the test sequence referenced in the code. See § 1324.5.4.7.
For medical vacuum systems: a 24‑hour standing vacuum test is required after installation of all components, with test pressure between 12 inches HgV and full vacuum, and the leakage over 24 hours shall not exceed 0.5% of the starting pressure (the code gives the example 0.125 inch HgV leakage starting at 25 inches HgV). The vacuum test must be witnessed by the AHJ or designee and a form provided to the verifier. See § 1324.5.5.2, § 1324.5.5.3, § 1324.5.5.5, and § 1324.5.5.6.

Quick decision table (what matters on the job)

Decision / item	Required value or action	Code reference
Installer certification	ASSE/IAPMO/ANSI 6010 certification required for medical gas/vacuum installers	§ 1323.10
Brazing qualification docs on site	Provide/maintain brazing procedure spec and brazer performance records at the job site before work starts	§ 1323.10.2, § 1323.11.3
Brazing qualification method	Test coupons, visual exam + sectioning; PQR / WPS requirements per ASME IX or AWS B2.2 (as modified)	§ 1323.11.1 – § 1323.11.4
Positive‑pressure standing test	24‑hour standing pressure test, witnessed; form provided at start of tests	§ 1324.5.4.7
Vacuum standing test length	24 hours	§ 1324.5.5.2
Vacuum test pressure	12 inches HgV to full vacuum	§ 1324.5.5.3
Allowable vacuum leakage	≤ 0.5% of starting pressure (example: 0.125 in HgV leakage starting at 25 in HgV)	§ 1324.5.5.5
Witnesses allowed	ASSE/IAPMO/ANSI 6020 inspector, ASSE/IAPMO/ANSI 6030 verifier, or AHJ	§ 1324.5.4.7 (positive systems) and § 1324.5.5.6 (vacuum systems)

Exceptions & special cases

Health‑care organization personnel may perform installations only if they meet all the same installer qualification and documentation requirements in § 1323.10. That permission is explicitly allowed but conditioned on meeting the code’s qualification requirements.
Brazing procedure qualification may be accepted from a technically competent group or agency provided the employer obtains the procedure and supporting records and signs and dates them accepting responsibility, and the employer qualifies at least one brazer using that procedure (see § 1323.11.4).

Common mistakes

Failing to have the brazing‑procedure qualification records and brazer performance records on the job site prior to starting brazing (§ 1323.10.2). Inspectors commonly find missing or incomplete coupons/records.
Using installers who lack ASSE/IAPMO/ANSI 6010 certification for medical gas systems — board/inspector will cite noncompliance to § 1323.10.
Performing 24‑hour standing tests but failing to have the test witnessed by an approved witness or to hand the witness form to the verifier at the start of the test sequence (see § 1324.5.4.7 and § 1324.5.5.6).
Misreading the vacuum leakage allowance — the code permits only 0.5% (not 5%) over 24 hours (example clarified in § 1324.5.5.5).

Worked example

Scenario: A hospital installs a new oxygen piping distribution. The installer will braze copper tubing and then run the acceptance tests.

Before work starts, the contractor posts the brazing procedure specification and the brazer performance qualification records on the job site (per § 1323.10.2 and § 1323.11.3). The contractor keeps the test coupons and sectioned coupon reports on file.
After installation, the contractor conducts the initial installer pressure test and then the 24‑hour standing pressure test for the positive‑pressure oxygen system. The standing test is scheduled to be observed by an ASSE/IAPMO/ANSI 6020 inspector. The contractor provides the required “proof of testing” form to the verifier at the test start (per § 1324.5.4.7).
For a vacuum system example: if testing a vacuum distribution starting at 25 in HgV, the team measures the pressure after 24 hours. The allowable leakage over 24 hours is 0.5% (for 25 in HgV that example equals ≈0.125 in HgV). If measured leakage exceeds that amount, the found leaks must be repaired and the system retested per § 1324.5.5.5–.6.

Related provisions (quick list)

§ 1323.10 — Qualifications of installers (certification requirement: ASSE/IAPMO/ANSI 6010).
§ 1323.10.2 — Job‑site documentation for brazing qualification to be provided and maintained.
§ 1323.11 — Qualification of brazing procedures and brazers (test coupons, procedure specs, documentation).
§ 1324.5.4.7 — Proof of testing and witness requirement for 24‑hour standing pressure test (positive‑pressure systems).
§ 1324.5.5.2–.6 — 24‑hour standing vacuum test duration, pressure range, allowable leakage, and proof/witness requirements.

Note about the user‑listed controlling sections: you requested grounding to § 1324.5.9.1 and § 1324.5.9.4. I searched the provided 2025 CPC files but the text for § 1324.5.9.1 and § 1324.5.9.4 was not present in the uploaded file excerpts I was able to retrieve — therefore I cannot quote or rely on those specific subsections here. If you want, I can search again or you can upload the specific pages containing § 1324.5.9.* and I will integrate them precisely. (Other relevant 1324.* provisions above that address standing tests and proof of testing are cited and used.)

Code references

Grounded in the retrieved California Plumbing Code — click a citation to read the verbatim passage:

CPC § 318.3 Medium relevance — show source text

318.3 Pressure Tests (greater than 10 psi to 100 psi). Required pressure tests exceeding 10 psi (69 kPa) but less than or equal to 100 psi (689 kPa) shall be performed with gauges of 1 psi (7 kPa) incrementation or less. 318.4 Pressure Tests (exceeding 100 psi). Required pressure tests exceeding 100 psi (689 kPa) shall be performed with gauges incremented for 2 percent or less of the required test pressure. 318.5 Pressure Range. Test gauges shall have a pressure range not exceeding twice the test pressure applied.

319.0 Medical Gas and Vacuum Systems. 319.1 General. Such piping shall be in accordance with the requirements of Chapter 13. The Authority Having Jurisdiction shall require evidence of the competency of the installers and verifiers.

320.0 Rehabilitation of Piping Systems. 320.1 General. Where pressure piping systems are rehabilitated using an epoxy lining system, it shall be in accordance with ASTM F2831.

321.0 Essential Plumbing Provisions. [OSHPD 1, 2, 3 (Surgical Clinics), 4 & 5] During periods of power out- ages essential electrical power shall be provided for the fol- lowing equipment:

(1) Domestic water booster pumps.

(2) Domestic hot water circulating pumps.

(3) Sewage ejector pumps.

(4) Sump pumps and drainage pumps.

(5) Domestic water heating equipment and their controls.

(6) Fuel pumps.

(7) Grease removal devices requiring electrical power.

(8) Domestic hot water high temperature alarm.

322.0 Psychiatric Services. [OSHPD 1, 2, 4 & 5] For projects associated with provision of psychiatric services in acute psychiatric hospitals, general acute care hospitals, and special treatment program service units in skilled nursing facilities, special design considerations for injury and suicide prevention shall be given to shower, bath, toilet, and sink plumbing fixtures. Shower heads shall be of flush-mounted design to minimize anchor points.

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GENERAL REGULATIONS

323.0 Plumbing Equipment Schedules. [OSHPD 1, 2, 3, 4 & 5] Plumbing equipment schedules shall clearly indi- cate which equipment will be on essential power or appro- priate special seismic certifications.

TABLE 313.3

HANGERS AND SUPPORTS

MATERIALS	TYPES OF JOINTS	HORIZONTAL	VERTICAL
Cast	Lead and Oakum	5 feet, except 10 feet where 10 foot lengths are installed1, 2, 3	Base and each floor, not to exceed 15 feet
Cast	Compression Gasket	Every other joint, unless over 4 feet then support each joint1, 2, 3	Base and each floor, not to exceed 15 feet
Cast-Iron Hubless	Shielded Coupling	Every other joint, unless over 4 feet then support each joint1,2,3,4	Base and each floor, not to exceed 15 feet
Copper & Copper Alloys	Soldered,

CPC § 99.9 Medium relevance — show source text
This includes a detailed technology evaluation study conducted to challenge the treatment technology over a wide range of operational conditions. Commissioning. The activities associated with bringing a new process into normal working condition. Field Verification. Performance confirmation study conducted using challenge testing, including surrogate microorganisms and/or other non-biological surrogates, usually during startup and commissioning. Log 10 Reduction. The removal of a pathogen or surrogate in a unit process expressed in log 10 units of the effluent concentration over the influent concentration (e.g., a 1-log reduction equates to 90% removal, 2-log reduction to 99% removal, 3-log reduction to 99.9% removal, and so on). Log 10 Reduction Target (LRT). The log 10 reduction target for the specified pathogen group (e.g., viruses, bacteria, or protozoa) to achieve the identified level of risk to individuals (e.g., 10 [-4] infection per year). Stormwater. Natural precipitation that has contacted a surface at grade, below grade, or above ground parking surfaces.

Surrogate. A biological, chemical, or physical parameter used to verify pathogen reductions performances. Validation Report. Report documenting the results of a challenge test conducted during field verification.

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USEFUL TABLES

CONVERSION TABLES

Note: The information contained in these tables are not part of this American National Standard (ANS) and have not been processed in accordance with ANSI’s requirements for an ANS. As such, these tables may contain material that has not been subjected to public review or a consensus process. In addition, they do not contain requirements necessary for conformance to the standard.

UNIT CONVERSIONS

MULTIPLY BY TO OBTAIN

Acres.........................................................................43 560 ............................Square feet (ft [2] ) Acre-feet...................................................................43 560 ............................Cubic feet (ft [3] )

Acre-feet.................................................................325 851 ............................Gallons (U. S. liquid)

Atmosphere (atm)........................................................76.0 ............................Centimeters of mercury (0°C)

Atmosphere (standard) (atm)........................................76.0 ............................Centimeters of mercury (0°C)

Atmosphere (standard) (atm)......................................33.90 ............................Feet of water (4°C)

Atmosphere (standard) (atm)......................................29.92 ............................Inches of mercury

Atmosphere (standard) (atm)..............................101.32501 ............................Kilopascals (kPa) Atmosphere (standard) (atm)......................................14.70 ............................Pounds-force/square inch (lbf/in [2] )

Barrels..............................................................................42 ............................Gallons (gal)

Barrels...................................................................158.9873 ............................Liters (L)

British thermal units (Btu)....................................1055.055 ............................Joules (J)
CPC § 31-2022 Medium relevance — show source text
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"The information contained in this appendix is not part of this American National Standard (ANS) and has not been processed in accordance with ANSI's requirements for an ANS. As such, this appendix may contain material that has not been subjected to public review or a consensus process. In addition, it does not contain requirements necessary for conformance to the standard."

The following IAPMO Installation Standard is included here for the convenience of the users of the Uniform Plumbing Code. It is not considered as a part of the Uniform Plumbing Code unless formally adopted as such. This Installation Standard is an independent, stand-alone document published by the International Association of Plumbing and Mechanical Officials and is printed herein by the expressed written permission of IAPMO.

INSTALLATION STANDARD FOR PEX TUBING SYSTEMS

FOR HOT- AND COLD-WATER DISTRIBUTION

IAPMO IS 31-2022

The provisions contained in this appendix are not mandatory unless specifically adopted by a state agency, or referenced in the adopting ordinance.

1 Scope

1.1 General

1.1.1 This Standard specifies requirements for the installation of SDR 9 CTS crosslinked polyethylene (PEX) tubing and fittings, including cold-expansion, crimp, press, and mechanical compression fittings, intended for hot- and cold-water distribution systems within buildings.

1.1.2 This Standards applies to

(a) SDR 9 CTS PEX tubing complying with ASTM F876 and pressure-rated in accordance with PPI TR-3; and (b) PEX fitting systems complying with (i) ASTM F877, for mechanical compression fittings and metal or plastic insert fittings with stainless steel press sleeves; (ii) ASTM F1807 or ASTM F2159, for metal or plastic insert fittings with copper crimp rings; (iii) ASTM F1960, for cold expansion fittings with PEX reinforced rings; or (iv) ASTM F2080, for cold expansion fittings with metal compression sleeves. 1.2 Terminology

In this Standard,

(a) “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy to comply with the Standard; (b) “should” is used to express a recommendation, but not a requirement; (c) “may” is used to express an option or something permissible within the scope of the Standard; and (d) “can” is used to express a possibility or a capability. Notes accompanying sections of the Standard do not specify requirements or alternative requirements; their purpose is to separate explanatory or informa

tive material from the text. Notes to tables and figures are considered part of the table or figure and can be written as requirements.

1.3 Units of Measurement

SI units are the primary units of record in global commerce. In this Standard, the inch/pound units are shown in parentheses. The values stated in each measurement system are equivalent in application, but each unit system is to be used independently. All references to gallons are to U.S. gallons.

2 Reference Publications
CPC § 710.13.3 Medium relevance — show source text
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SANITARY DRAINAGE

valve and fullway-type shutoff valve shall be located within the discharge line or internally within the device.

710.13.3 Venting. The plumbing fixtures that discharge into the macerating device shall be vented in accordance with this code. The sump shall be vented in accordance with the manufacturer’s instructions, and such vent shall be permitted to connect to the fixture venting.

711.0 Suds Relief.

711.1 General. Drainage connections shall not be made into a drainage piping system within 8 feet (2438 mm) of a vertical to horizontal change of direction of a stack containing suds-producing fixtures. Bathtubs, laundries, washing machine standpipes, kitchen sinks, and dishwashers shall be considered suds-producing fixtures. Where parallel vent stacks are required, they shall connect to the drainage stack at a point 8 feet (2438 mm) above the lowest point of the drainage stack.

Exceptions:

(1) Single-family residences.

(2) Stacks receiving the discharge from less than three stories of plumbing fixtures.

712.0 Testing.

712.1 Media. The piping of the plumbing, drainage, and venting systems shall be tested with water or air except that plastic pipe shall not be tested with air. The Authority Having Jurisdiction shall be permitted to require the removal of cleanouts, etc., to ascertain whether the pressure has reached all parts of the system. After the plumbing fixtures have been set and their traps filled with water, they shall be submitted to a final test.

712.2 Water Test. The water test shall be applied to the drainage and vent systems either in its entirety or in sections. Where the test is applied to the entire system, openings in the piping shall be tightly closed, except the highest opening, and the system filled with water to the point of overflow. Where the system is tested in sections, each opening shall be tightly plugged, except the highest opening of the section under test, and each section shall be filled with water, but no section shall be tested with less than a 10 foot head of water (30 kPa). In testing successive sections, not less than the upper 10 feet (3048 mm) of the next preceding section shall be tested, so that no joint or pipe in the building (except the uppermost 10 feet (3048 mm) of the system) shall have been submitted to a test of less than a 10 foot head of water (30 kPa). The water shall be kept in the system, or in the portion under test, for not less than 15 minutes before inspection starts. The system shall then be tight at all points.

712.3 Air Test. The air test shall be made by attaching an air compressor testing apparatus to a suitable opening and, after closing all other inlets and outlets to the system, forcing air into the system until there is a uniform gauge pressure of 5 pounds-force per square inch (psi) (34 kPa) or sufficient to balance a column of mercury 10 inches (34 kPa) in height. The pressure shall be held without the introduction of additional air for a period of not less than 15 minutes.

Part II – Building Sewers.

713.0 Sewer Required. **713.1 Where Required.
CPC § 1323.13.3 Medium relevance — show source text
2, 1323.13.3| |1326.4 - 1326.10|1326.5 - 1326.11| |1505.6 - 1505.14|1505.5 - 1505.13| |Figure 1505.10|Figure 1505.9| |1506.6 - 1506.13|1506.5 - 1506.12| |1603.3 - 1603.4|1603.4 - 1603.5| |Table 1603.4|Table 1603.5| |1603.5 - 1603.19|1603.6 - 1603.20| |1603.20|1503.2.4| |L 402.9 - L 402.11|L 402.8 - L 402.10| |L 404.9 - L 404.12|L 404.8 - L 404.11| |L 411.5, L 411.6|L 411.2, L411.3| |L 411.7|L 411.4| |L 411.9 - L 411.12|L 411.5 - L 411.8|

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RELATED PUBLICATIONS AND SERVICES

The Documents Listed are Not by this Reference Adopted by The State of California.

IAPMO provides a variety of other products which are useful for inspectors, building officials, architects, engineers,

manufacturers, contractors, plumbers, and apprentices.

IAPMO Headquarters Directory

4755 East Philadelphia Street, Ontario, California 91761-2816

Publication Order Desk Phone: 800-85-IAPMO

Publication Toll Free Fax: 877-85-CODES

E-mail: iapmo@iapmo.org

Website: www.iapmo.org

Free Code Question: 800-201-0335

Uniform Plumbing Code – 2024 Edition:

The Uniform Plumbing Code is the most widely adopted plumbing code in the world. The 2024 edition contains complete “turnkey” requirements for the installation and maintenance of plumbing systems, all in one easy to use book.

Uniform Plumbing Code Illustrated Training Manual:

The UPC Illustrated Training Manual is an excellent reference for anyone involved in the plumbing industry. It contains an extensive definitions section and several hundred comprehensive technical diagrams and illustrations. It serves as a textbook, and it also is useful as a valuable tool for explaining the intent and use of the Code.

Uniform Plumbing Code Study Guide:

This book is the perfect complement to the UPC Illustrated Training Manual. Alone, it constitutes a complete self-study course for learning the UPC. It has hundreds of questions, general practice exams, and plumbing math, pipe sizing exercises and fitting identification. A big help in getting you ready for a certification exam!

Guide to Important Code Questions to the Uniform Plumbing Code:

An excellent reference for learning and understanding plumbing code changes and identifies code changes between editions. It is a useful tool for preparing code change proposals.

Uniform Mechanical Code – 2024 Edition:

The Uniform Mechanical Code contains complete requirements for the installation and maintenance of heating, ventilating, cooking and refrigeration systems.

Uniform Mechanical Code Illustrated Training Manual:

Contains technical diagrams and illustrations that demonstrate the intent and use of the UMC. A great reference for everyone involved in Mechanical HVACR design and installation.

Uniform Mechanical Code Study Guide:
CPC § 4.1 Medium relevance — show source text
- 100°F
  (16°C-38°C)|1 h|6 h|2 h|12 h|6 h|24 h| |40°F-60°F
  (4°C-16°C)|2 h|12 h|4 h|24 h|12 h|48 h| |10°F- 40°F
  (-12°C+4°C)|8 h|48 h|16 h|96 h|48 h|8 days| |*If gaps or loose fits are encountered in the system, double these cure times.|*If gaps or loose fits are encountered in the system, double these cure times.|*If gaps or loose fits are encountered in the system, double these cure times.|*If gaps or loose fits are encountered in the system, double these cure times.|*If gaps or loose fits are encountered in the system, double these cure times.|*If gaps or loose fits are encountered in the system, double these cure times.|*If gaps or loose fits are encountered in the system, double these cure times.|
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IS 33

FIGURE 1

LOCATION OF THRUST BLOCKS (STANDARD AND METRIC COMBINED) A COMPARISON OF THRUST-BLOCK AREAS (See Section 4.1)

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IS 33

FIGURE 2

THRUST BLOCK BEARING AREA (See Section 5.2.2)

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IS 33

Uniform Plumbing Code References for Ductile Iron and PVC Pressure Building Supply and Exterior Cold-Water Piping

The following sections of the 2024 Uniform Plumbing Code apply to ductile iron and PVC pressure building supply and exterior cold-water piping.

Chapter 3 General Regulations

309.0 Workmanship

312.0 Protection of Piping, Materials, and Struc tures

313.0 Hangers, Supports, and Anchors

314.0 Trenching, Excavation, and Backfill

Chapter 6 Water Supply and Distribution

604.0 Materials (water piping)

Table 604.1 Materials for Building Supply and Water Distribution Piping and Fittings

605.4 Ductile Iron Pipe and Joints

605.12 PVC Plastic Pipe and Joints

605.16.2 Plastic Pipe to Other Materials

609.0 Installation, Testing, Unions, and Location

Abbreviations

IAPMO International Association of Plumbing and Mechanical Officials

UPC Uniform Plumbing Code published by IAPMO

AWWA American Water Works Association

CSA Canadian Standards Association

Applicable Standards.

ASME B16.4 Gray Iron Threaded Fittings Classes 125 and 250

ASTM D1785 Poly (Vinyl Chloride) (PVC) Plastic Pipe, Schedules 40, 80, and 120

ASTM D2241 Poly (Vinyl Chloride) (PVC) Pressure-Rated Pipe (SDR Series)
CPC § 1017.4 Medium relevance — show source text
(b) Pumps shall be adequately sized and accessible.

(c) Waste oil tanks shall have a 2 inch (50 mm) minimum pump-out connection at grade and an 1 [1] ⁄ 2 inch (40 mm) minimum vent to atmosphere at an approved location not less than 10 feet (3048 mm) above grade. 1017.4 Design of Interceptors. Each manufactured interceptor that is rated shall be stamped or labeled by the manufacturer with an indication of its full discharge rate in gpm (L/s). The following shall apply:

(1) The full discharge rate to such an interceptor shall be determined at full flow. Each interceptor shall be rated equal to or greater than the incoming flow and shall be provided with an overflow line to an underground tank.

(2) Interceptors not rated by the manufacturer shall have a depth of not less than 2 feet (610 mm) below the invert of the discharge drain. The outlet opening shall have not

«

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TRAPS AND INTERCEPTORS

less than an 18 inch (457 mm) water seal and shall have a minimum capacity as follows:

(a) Where not more than three motor vehicles are serviced, stored, or both, interceptors shall have a minimum capacity of 6 cubic feet (0.2 m [3] ), and 1 cubic foot (0.03 m [3] ) of capacity shall be added for each vehicle up to 10 vehicles.

(b) Above 10 vehicles, the Authority Having Jurisdiction shall determine the size of the interceptor required.

(c) Where vehicles are serviced and not stored, interceptor capacity shall be based on a net capacity of 1 cubic foot (0.03 m [3] ) for each 100 square feet (9.29 m [2] ) of the surface to be drained into the interceptor, with a minimum of 6 cubic feet (0.2 m [3] ).

2025 CALIFORNIA PLUMBING CODE 201

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CALIFORNIA PLUMBING CODE – MATRIX ADOPTION TABLE

CHAPTER 11 - STORM DRAINAGE

(Matrix Adoption Tables are non-regulatory, intended only as an aid to the code user. See Chapter 1 for state agency authority and building applications.)
CPC § 11.0 Medium relevance — show source text
11.0 - 1.11.11_|||X|||||||||||||||||||||| |1.13.0||||||||||||||||||||X||||| |Division II - Scope and
Administration||||||||||||||||||||||||| |101.0||||||||||X|X|X||X|X|||||||||| |102.0||||||||||X|X|X||X|X|||||||||| |103.0||||||||||X|X|X||X|X|||||||||| |104.2 Items 1 & 2||||X|X|||||||||||||||||||| |104.3.1||||||||||X|X|X||X|X|||||||||| |104.4.3.1|X|||||||||||||||||||||||| |105.0||||||||||X|X|X||X|X||||||||||

This state agency does not adopt sections identified with the following symbol: The Office of the State Fire Marshal’s adoption of this chapter or individual sections is applicable to structures regulated by other state agencies pursuant to Section 1.11.0.

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CHAPTER 1

ADMINISTRATION

DIVISION I

CALIFORNIA ADMINISTRATION

1.1.0 General.

1.1.1 Title. These regulations shall be known as the Califor- nia Plumbing Code, may be cited as such and will be referred to herein as “this code.” The California Plumbing Code is Part 5 of thirteen parts of the official compilation and publi- cation of the adoption, amendment, and repeal of plumbing regulations to the California Code of Regulations, Title 24, also referred to as the California Building Standards Code. This part incorporates by adoption the 2024 Uniform Plumb- ing Code of the International Association of Plumbing and Mechanical Officials with necessary California amendments.

1.1.2 Purpose. The purpose of this code is to establish the minimum requirements to safeguard the public health, safety and general welfare through structural strength, means of egress facilities, stability, access to persons with disabilities, sanitation, adequate lighting and ventilation, and energy con- servation; safety to life and property from fire and other haz- ards attributed to the built environment; and to provide safety to fire fighters and emergency responders during emergency operations.

1.1.3 Scope. The provisions of this code shall apply to the construction, alteration, movement, enlargement, replace- ment, repair, equipment, use and occupancy, location, main- tenance, removal, and demolition of every building or structure or any appurtenances connected or attached to such buildings or structures throughout the State of California.
CPC § 224.0 Medium relevance — show source text
Source . . . . . . . . . . . . . . . . . . . . .224.0, 1314.6, 1314.7,

1323.14.2, 1324.5.4.2

Temperature relief . . . . . . . . . . . . . .504.5, 504.6, 505.2

584 2025 CALIFORNIA PLUMBING CODE

), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

INDEX

Thermostatic . . . . . . . . . . . . . . . . . . . . . . .222.0, 408.4

Vacuum interface . . . . . . . . . . . . . . . . . . . . . . .C 501.2.4

Vacuum relief . . . . . . . . . . . .224.0, 504.6, 607.5, 608.7,

1505.11, 1506.10.3, 1602.9

Zone . . . . . . . . . . . . . . . . . . . . . . . . . . . . .224.0, 1314.4

VENT, PLUMBING . . . . . . . . . . . . . . . . . . . . . . . .Chapter 9

Below trap weir . . . . . . . . . . . . . . . . . . . . .905.5, 1002.4

Branch, definition . . . . . . . . . . . . . . . . . . . . . . . . .204.0

Buildings over 10 stories . . . . . . . . . . . . . . . . . . . .907.1 Changes in direction of . . . . . . . . . . . . . . . . . . . . .903.3

Chemical . . . . . . . . . . . . . . . . . . . . . .811.2, 811.5, 811.6

Combination waste and

vent system design . . . . . . . . . . . . . . . . .205.0, 910.0,

Appendix B

Connections . . . . . . . . . . . . .310.2, 805.0, Table 810.1,

905.1, 905.2, 908.1.2,

908.2.1, 911.2, 1503.2.2

Continuous, definition . . . . . . . . . . . . . . . . . . . . . .205.0

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .224.0

Distance of trap from . . . . . . . . . . .1002.2, Table 1002.2

Double fitting for . . . . . . . . . . . . . . . . . . . . .704.2, 905.6

Engineered . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .912.0

Expansion joints . . . . . . . . . . .705.9.2, 1101.5, 1213.2.2

CPC § 705.10 Medium relevance — show source text

Waste,
and Vent (DWV), Sewer, Sanitary, and Storm Plumbing Sys-
tems for Above and Below Ground Use|Joints|705.10|

340 2025 CALIFORNIA PLUMBING CODE

REFERENCED STANDARDS

TABLE 1701.1 (continued) REFERENCED STANDARDS

STANDARD NUMBER	STANDARD TITLE	APPLICATION	REFERENCED SECTION
ASTM C1540-2020	Standard Specification for Heavy-Duty Shielded Couplings Joining Hubless Cast Iron Soil Pipe and Fittings	Joints	705.2.2
ASTM C1563-2008 (R2021)	Standard Test Method for Gaskets for Use in Connection with Hub and Spigot Cast Iron Soil Pipe and Fittings for Sanitary Drain, Waste, Vent, and Storm Piping Applications	Joints	705.2.2
ASTM C1822-2021	Standard Specification for Insulating Covers on Accessible Lavatory Piping	Miscellaneous	403.3
ASTM D1253-2014	Standard Test Method for Residual Chlorine in Water	Miscellaneous	1506.10.6, 1603.4.1
ASTM D1785-2021a	Standard Specification for Poly (Vinyl Chloride) (PVC) Plastic Pipe, Schedules 40, 80, and 120	Piping	Table 604.1, Table 701.2
ASTM D2235-2021	Standard Specification for Solvent Cement for Acrylonitrile- Butadiene-Styrene (ABS) Plastic Pipe and Fittings	Joints	705.1.2
ASTM D2239-2021	Standard Specification for Polyethylene (PE) Plastic Pipe (SIDR-PR) Based on Controlled Inside Diameter	Piping	Table 604.1
ASTM D2241-2020	Standard Specification for Poly (Vinyl Chloride) (PVC) Pressure- Rated Pipe (SDR Series)	Piping	Table 604.1
ASTM D2464-2015	Standard Specification for Threaded Poly (Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 80	Fittings	Table 604.1
ASTM D2466-2021	Standard Specification for Poly (Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 40	Fittings	Table 604.1
ASTM D2467-2020	Standard Specification for Poly (Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 80	Fittings	Table 604.1
ASTM D2513-2020	Standard Specification for Polyethylene (PE) Gas Pressure Pipe, Tubing, and Fittings	Piping	1208.5.4, 1208.5.6.2, 1208.5.10.2, 1210.1.7.1(1)
ASTM D2564-2020	Standard Specification for Solvent Cements for Poly (Vinyl Chloride) (PVC) Plastic Piping Systems	Joints	605.12.2, 705.6.

CPC § 102.3 Medium relevance — show source text
1

CEBC—25: California Existing Building Code

102.3, 1011.5.2, 1103.1, 1104.18, 1105.5.2

CMC—25: California Mechanical Code

201.3, 308.3, 605.1, 605.2.1.1, 605.2.1.2, 605.2.1.3, 605.2.1.4, 605.2.1.5, 605.3, 605.4, 605.4.2.3, 605.4.2.5, 605.5.2, 605.7, 606.1, 606.2, 608.1, 608.3, 608.4, 608.5, 608.8, 608.9.1, 608.10, 608.17, 610.1.1, 903.2.11.4, 904.14, 907.3.1, 909.1, 909.10.2, 909.13.1, 910.4.7, 915.6.1, 1006.2.2.3, 1011.16, 1020.6.1, 1207.4.7, 1207.6.1, 1207.6.1.2.2, 1207.11.8, 2104.2.1, 2105.3, 2301.1, 2301.6, 2309.3.1.2, 2311.3.1, 2311.4.3, 2311.8.2, 2311.8.8, 2311.8.10, 2404.9, 2404.9.2, 2504.5, 2703.2.2, 2703.10.4, 2703.14, 2803.2, 2803.3, 3001.1, 3003.1, 3004.2, 3108.12.1, 3108.12.2, 3703.5, 3804.1.1.7, 3904.1, 3905.3, Table 5003.1.1(1), 5003.8.4.2, 5003.8.5.2, 5003.8.6.2, 5004.3.1, 5303.7.6, 5303.16.9, 5305.5, 5306.2.2, 5306.2.3, 5307.4.4, 5504.2.1.3, 5504.2.2.3, 5505.4.1.1, 5701.3, 5703.6.1, 5704.2.8.9, 5705.3.7.5.1, 5706.2, 5706.4.4, 6003.1.3, 6003.2.3.2, 6004.2.2.7, 6005.3.1, 6005.3.2, 6103.2.1.7

CPC—25: California Plumbing Code
CPC § 1.1.0 Medium relevance — show source text
CHAPTER 1

ADMINISTRATION

DIVISION I

CALIFORNIA ADMINISTRATION

1.1.0 General.

1.1.1 Title. These regulations shall be known as the Califor- nia Plumbing Code, may be cited as such and will be referred to herein as “this code.” The California Plumbing Code is Part 5 of thirteen parts of the official compilation and publi- cation of the adoption, amendment, and repeal of plumbing regulations to the California Code of Regulations, Title 24, also referred to as the California Building Standards Code. This part incorporates by adoption the 2024 Uniform Plumb- ing Code of the International Association of Plumbing and Mechanical Officials with necessary California amendments.

1.1.2 Purpose. The purpose of this code is to establish the minimum requirements to safeguard the public health, safety and general welfare through structural strength, means of egress facilities, stability, access to persons with disabilities, sanitation, adequate lighting and ventilation, and energy con- servation; safety to life and property from fire and other haz- ards attributed to the built environment; and to provide safety to fire fighters and emergency responders during emergency operations.

1.1.3 Scope. The provisions of this code shall apply to the construction, alteration, movement, enlargement, replace- ment, repair, equipment, use and occupancy, location, main- tenance, removal, and demolition of every building or structure or any appurtenances connected or attached to such buildings or structures throughout the State of California.

1.1.3.1 Non-State-Regulated Buildings, Structures, and Applications. Except as modified by local ordinance pur- suant to Section 1.1.8, the following standards in the Cal- ifornia Code of Regulations, Title 24, Parts 2, 2.5, 3, 4, 5, 6, 7, 9, 10 and 11 shall apply to all occupancies and applications not regulated by a state agency.

1.1.3.2 State-Regulated Buildings, Structures, and Applications. The model code, state amendments to the model code, and/or state amendments where there are no relevant model code provisions shall apply to the fol- lowing buildings, structures, and applications regulated by state agencies as specified in Sections 1.2.0 through 1.14.0, except where modified by local ordinance pur- suant to Section 1.1.8. When adopted by a state agency, the provisions of this code shall be enforced by the appro- priate enforcing agency, but only to the extent of author- ity granted to such agency by the state Legislature.

Note: See “How to Distinguish Between Model Code Language and California Amendments” in the front of the code.

1. State-owned buildings, including buildings con- structed by the Trustees of the California State Uni- versity, and to the extent permitted by California laws, buildings designed and constructed by the Regents of the University of California, and regu-

lated by the Building Standards Commission. See Section 1.2.0 for additional scope provisions.

2. Section 1.3.0 is reserved for the Board of State and Community Corrections.
CPC § 1323.7.1 Medium relevance — show source text
1323.7.1 Medical Gas and Medical Vacuum. Medical gas and vacuum systems with the same contents shall be permitted to be interconnected with an inline valve installed between the systems. [NFPA 99:5.1.10.11.7.2] 1323.7.2 Leak Testing. Leak testing shall be accomplished by separately charging and testing each individual piping system. [NFPA 99:5.1.10.11.7.3]

1323.8 Manufacturer’s Instructions. The installation of individual components shall be made in accordance with the instructions of the manufacturer. Manufacturer’s instructions shall include directions and information deemed by the manufacturer to be adequate for attaining proper operation, testing, and maintenance of the medical gas and vacuum systems. Copies of the manufacturer’s instructions shall be left with the system owner. [NFPA 99:5.1.10.11.8.1 – 5.1.10.11.8.3] 1323.9 Changes in System Use. Where a positive-pressure medical gas piping distribution system originally used or constructed for use at one pressure and for one gas is converted for operation at another pressure or for another gas, all provisions of Section 1318.0 through Section 1323.12 shall apply as if the system were new. [NFPA 99:5.1.10.11.9.1] 1323.9.1 Medical Vacuum System. A vacuum system shall not be permitted to be converted for use as a gas system. [NFPA 99:5.1.10.11.9.2]

1323.10 Qualifications of Installers. The installation of medical gas and vacuum systems shall be made by qualified, competent technicians who are experienced in performing such installations, including all personnel who actually install the piping system. Installers of medical gas and vacuum piped distribution systems, all appurtenant piping supporting pump and compressor source systems, and appurtenant piping supporting source gas manifold systems not including permanently installed bulk source systems, shall be certified in accordance with ASSE/IAPMO/ANSI 6010. [NFPA 99:5.1.10.11.10.1, 5.1.10.11.10.2]

1323.10.1 Brazing. Brazing shall be performed by individuals who are qualified in accordance with Section 1323.11. [NFPA 99:5.1.10.11.10.5]

1323.10.2 Documentation. Prior to any installation work, the installer of medical gas and vacuum piping shall provide and maintain documentation on the job site

294 2025 CALIFORNIA PLUMBING CODE

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HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS

for the qualification of brazing procedures and individual brazers that is required under Section 1323.11. [NFPA 99:5.1.10.11.10.6]

1323.10.3 Health Care Organization Personnel. Health care organization personnel shall be permitted to install piping systems if all of the requirements of Section 1323.10 are met during the installation. [NFPA 99:5.1.10.11.10.7]
CPC § 12000-2021 Medium relevance — show source text
Gas Systems Maintenance Personnel|Professional
Qualifications| |ASSE/IAPMO/ANSI 7010-
2020|Installers of Residential Potable Water Fire Sprinkler Systems for One- and Two-
Family Dwellings|Professional
Qualifications| |ASSE/IAPMO/ANSI 7020-
2020|Inspectors of Residential Potable Water Fire Sprinkler Systems for One- and Two-
Family Dwellings|Professional
Qualifications| |ASSE/IAPMO/ANSI Series
12000-2021|Professional Qualifications Standard for Water Management and Infection Control
Risk Assessment for Building Systems|Professional
Qualifications| |ASSE/IAPMO/ANSI
12020-2021|Environment of Care, Infection Control and Construction Risk Assessment Profes-
sional Qualification Standard for Construction and Maintenance Employers|Professional
Qualifications| |ASSE/IAPMO/ANSI
12060-2021|Water Quality Program Professional Qualifications Standard for Employers and Des-
ignated Representatives|Professional
Qualifications| |ASSE/IAPMO/ANSI
12061-2021|Water Quality Program Professional Qualifications Standard for Plumbers|Professional
Qualifications| |ASSE/IAPMO/ANSI
12062-2021|Water Quality Program Professional Qualifications Standard for Pipefitters and
HVAC Technicians|Professional
Qualifications| |ASSE/IAPMO/ANSI
12063-2021|Water Quality Program Professional Qualifications Standard for Sprinkler Fitters|Professional
Qualifications| |ASSE/IAPMO/ANSI
12080-2021|Professional Qualifications Standard for Legionella Water Safety and Management
Specialist|Professional
Qualifications| |ASSE/IAPMO/ANSI Series
13000-2015 (R2020)|Service Plumber and Residential Mechanical Service Technician Professional Quali-
fications Standard|Professional
Qualifications| |ASSE/IAPMO/ANSI
13010-2015 (R2020)|Professional Qualifications Standard for the Service Plumber|Professional
Qualifications| |ASSE/IAPMO/ANSI Series
16000-2019|Professional Qualifications Standard for Inspectors and Plans Examiners|Professional
Qualifications| |ASSE/IAPMO/ANSI
16010-2019|Plumbing Inspector|Professional
Qualifications| |ASSE/IAPMO/ANSI
16040-2019|Plumbing Plan Examiner|Professional
Qualifications| |ASSE/ARCSA/IAPMO/
ANSI Series 21000-2017|Rainwater Catchment Systems Personnel|Professional
Qualifications| |ASSE/IAPMO/ANSI
21110-2017|Rainwater Catchment Systems Installers|Professional
Qualifications| |ASSE/IAPMO/ANSI
21120-2017|Rainwater Catchment Systems Designers|Professional
Qualifications| |ASSE/IAPMO/ANSI
21130-2017|Inspectors of Rainwater and Stormwater Catchment Systems|Professional
Qualifications| |ASTM|ASTM|ASTM| |ASTM A48/A48M-2003
(R2021)|Standard Specification for Gray Iron Castings|Piping, Ferrous|

2025 CALIFORNIA PLUMBING CODE 353
CPC § 90.1 Medium relevance — show source text
(2) Preheat of the peak service hot-water draw to 85°F (29°C).

Exceptions:

(1) Facilities that employ condenser heat recovery for space heating with a heat recovery design exceeding 30 percent of the peak water-cooled condenser load at design conditions.

(2) Facilities that provide 60 percent of their service water heating from onsite renewable energy or siterecovered energy or from other sources. [ASHRAE 90.1:6.5.6.2.2] L 503.5 Submittals. The Authority Having Jurisdiction shall require submittal of compliance documentation and supplemental information in accordance with Section 104.3.1 of this code.

L 504.0 Solar Water Heating Systems.

L 504.1 General. The erection, installation, alteration, addition to, use or maintenance of solar water heating systems shall be in accordance with this section and the Uniform Solar Energy and Hydronics Code.

L 504.2 Annual Inspection and Maintenance. Solar energy systems that utilize a heat transfer fluid shall annually be inspected unless inspections are required on a more frequent basis by the solar energy system manufacturer.

L 505.0 Hard Water.

L 505.1 Softening and Treatment. Where water has a hardness equal to or exceeding 10 gr/gal (171 mg/L) measured as total calcium carbonate equivalents, the water supply line to water heating equipment and the circuit of boilers shall be softened or treated to prevent accumulation of limescale and consequent reduction in energy efficiency.

L 506.0 Drain Water Heat Exchangers. L 506.1 General. Drain water heat exchangers shall comply with IAPMO PS 92. The heat exchanger shall be accessible.

L 507.0 Heat Recovery from Steam Boiler Blowdown. L 507.1 General. Where heat recovery can be used beneficially to heat boiler makeup water or for other purposes, boiler blowdown from steam boilers exceeding 15 psi (103 kPa) and 3.4 E+06 Btu/h (996 kW) shall be directed to a heat recovery system that reduces the temperature of the blowdown discharge to below 140°F (60°C) without using tempering water.

L 601.0 Installer Qualifications.

L 601.1 Scope. The provisions of this section address minimum qualifications of installers of plumbing and mechanical systems covered within the scope of this appendix.

L 602.0 Qualifications.

L 602.1 General. Where permits are required, the Authority Having Jurisdiction shall have the authority to require contractors, installers, or service technicians to demonstrate competency. Where determined by the Authority Having Jurisdiction, the contractor, installer, or service technician shall be licensed to perform such work.

2025 CALIFORNIA PLUMBING CODE 513

), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

APPENDIX L

TABLE L 503.3.2

PERFORMANCE REQUIREMENTS FOR WATER-HEATING EQUIPMENT MINIMUM EFFICIENCY REQUIREMENTS

[ASHRAE 90.1: TABLE 7.8]
CPC § 101.13 Medium relevance — show source text
The test shall be ruled successful by the Authority Having Jurisdiction before final approval is granted. S 101.13 Commissioning. Onsite stormwater treatment systems shall be commissioned in accordance with the requirements of Section S 101.13.1 through Section S 101.13.4.

S 101.13.1 Commissioning Requirements. Commissioning for stormwater treatment systems shall be included in the design and construction processes of the project. Commissioning shall be performed by a person who demonstrates competency in commissioning stormwater treatment systems as required by the Authority Having Jurisdiction. S 101.13.2 Commissioning Plan. The construction documents shall include the commissioning plan for the stormwater treatment system. The commissioning plan shall be approved by the Authority Having Jurisdiction prior to commissioning the stormwater treatment system. The commissioning plan shall include the following:

(1) General project information.

(2) Equipment to be tested, including the test methodology.

(3) Processes to be tested.

(4) Criteria or process for testing.

(5) Criteria or process for acceptance.

(6) Commissioning team contact information.

(7) Commissioning process activities, schedules, and responsibilities.

(8) Plans for the completion of functional performance testing, post construction documentation and training, and the commissioning report. S 101.13.3 Performance Testing. Performance tests shall verify that the installation and operation of the

TABLE S 101.11(2)

MONITORING PARAMETERS

550 2025 CALIFORNIA PLUMBING CODE

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APPENDIX S

equipment of the stormwater treatment system is in accordance with the approved plans and specifications. The performance test report shall include the equipment tested, the testing methods utilized, and proof of proper calibration of the equipment. S 101.13.4 Commissioning Report. The commissioning report shall be submitted to the Authority Having Jurisdiction.

S 101.14 Operation and Maintenance Manual. An operation and maintenance manual shall be provided in accordance with Section 1501.6 and shall also include the following:

(1) Instructions on operating and maintaining the system, including treatment process operations, instrumentation and alarms, and chemicals storage and handling.

(2) Site equipment inventory and maintenance notes.

(3) Equipment/system warranty documentation and information.

(4) As-built design drawings.

(5) Details on training requirements and qualifications of personnel responsible for operating the system.

(6) Maintenance schedule. S 101.15 Inspection. Field inspections shall take place during and after construction while the contractor is on-site to verify that the stormwater treatment system components have been properly supplied and installed according to the plans and specifications used for installation. Record drawings shall be maintained with changes to the approved plans by the contractor and available for periodic inspection as needed.

S 102.0 Definitions.

S 102.1 General. For the purpose of this appendix, the following definitions shall apply: Challenge Test. The evaluation of a unit treatment process for pathogen log 10 reduction performance using selected surrogate or indigenous constituents. This includes a detailed technology evaluation study conducted to challenge the treatment technology over a wide range of operational conditions. Commissioning. The activities associated with bringing a new process into normal working condition. **Field Verification.
CPC § 7-1 Medium relevance — show source text
2025 CALIFORNIA GREEN BUILDING STANDARDS CODE 7-1

on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

7-2 2025 CALIFORNIA GREEN BUILDING STANDARDS CODE

on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

7 INSTALLER AND SPECIAL INSPECTOR QUALIFICATIONS

SECTION 701—GENERAL (RESERVED)

SECTION 702—QUALIFICATIONS

702.1 Installer training. HVAC system installers shall be trained and certified in the proper installation of HVAC systems including ducts and equipment by a nationally or regionally recognized training or certification program. Uncertified persons may perform HVAC installations when under the direct supervision and responsibility of a person trained and certified to install HVAC systems or contractor licensed to install HVAC systems. Examples of acceptable HVAC training and certification programs include but are not limited to the following:
1. State certified apprenticeship programs.
2. Public utility training programs.
3. Training programs sponsored by trade, labor or statewide energy consulting or verification organizations.
4. Programs sponsored by manufacturing organizations.
5. Other programs acceptable to the enforcing agency.
702.2 Special inspection.

[HCD] When required by the enforcing agency, the owner or the responsible entity acting as the owner’s agent shall employ one or more special inspectors to provide inspection or other duties necessary to substantiate compliance with this code. Special inspectors shall demonstrate competence to the satisfaction of the enforcing agency for the particular type of inspection or task to be performed. In addition to other certifications or qualifications acceptable to the enforcing agency, the following certifications or education may be considered by the enforcing agency when evaluating the qualifications of a special inspector:
1. Certification by a national or regional green building program or standard publisher.
2. Certification by a statewide energy consulting or verification organization, building performance contractors and home energy auditors.
3. Successful completion of a third party apprentice training program in the appropriate trade.
4. Other programs acceptable to the enforcing agency.
Note: Special inspectors shall be independent entities with no financial interest in the materials or the project they are inspecting for compliance with this code.

[BSC-CG] When required by the enforcing agency, the owner or the responsible entity acting as the owner’s agent shall employ one or more special inspectors to provide inspection or other duties necessary to substantiate compliance with this code. Special inspectors shall demonstrate competence to the satisfaction of the enforcing agency for the particular type of inspection or task to be performed. In addition, the special inspector shall have a certification from a recognized state, national or international association, as determined by the local agency. The area of certification shall be closely related to the primary job function, as determined by the local agency.

Note: Special inspectors shall be independent entities with no financial interest in the materials or the project they are inspecting for compliance with this code.

SECTION 703—VERIFICATIONS

703.1 Documentation. Documentation used to show compliance with this code shall include but is not limited to, construction documents, plans, specifications, builder or installer certification, inspection reports or other methods acceptable to the enforcing agency which demonstrate substantial conformance. When specific documentation or special inspection is necessary to verify compliance, that method of compliance will be specified in the appropriate section or identified in the application checklist.

2025 CALIFORNIA GREEN BUILDING STANDARDS CODE 7-3

on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

CPC § 506.0 Medium relevance — show source text

L 506.0 Drain Water Heat Exchangers. L 506.1 General. Drain water heat exchangers shall comply with IAPMO PS 92. The heat exchanger shall be accessible.

L 507.0 Heat Recovery from Steam Boiler Blowdown. L 507.1 General. Where heat recovery can be used beneficially to heat boiler makeup water or for other purposes, boiler blowdown from steam boilers exceeding 15 psi (103 kPa) and 3.4 E+06 Btu/h (996 kW) shall be directed to a heat recovery system that reduces the temperature of the blowdown discharge to below 140°F (60°C) without using tempering water.

L 601.0 Installer Qualifications.

L 601.1 Scope. The provisions of this section address minimum qualifications of installers of plumbing and mechanical systems covered within the scope of this appendix.

L 602.0 Qualifications.

L 602.1 General. Where permits are required, the Authority Having Jurisdiction shall have the authority to require contractors, installers, or service technicians to demonstrate competency. Where determined by the Authority Having Jurisdiction, the contractor, installer, or service technician shall be licensed to perform such work.

2025 CALIFORNIA PLUMBING CODE 513

APPENDIX L

TABLE L 503.3.2

PERFORMANCE REQUIREMENTS FOR WATER-HEATING EQUIPMENT MINIMUM EFFICIENCY REQUIREMENTS

[ASHRAE 90.1: TABLE 7.8]

EQUIPMENT TYPE	SIZE CATEGORY (INPUT)	SUBCATEGORY OR RATING CONDITION	PERFORMANCE REQUIRED1	TEST PROCEDURE2,3
Electric table-top water heaters	≤12 kW	<4000 (Btu/h)/gal ≥20 gal and≤120 gal	For applications outside U.S., see footnote (8). For U.S. appli- cations, see footnote (7).	Appendix E of 10 CFR 430
Electric storage water heaters	≤12 kW	<4000 (Btu/h)/gal ≥20 gal and≤55 gal	For applications outside U.S., see footnote (8). For U.S. applications, see footnote (7).	Appendix E of 10 CFR 430
Electric storage water heaters	≤12 kW	<4000 (Btu/h)/gal >55 gal and≤120 gal	For applications outside U.S., see footnote (8). For U.S. applications, see footnote (7).	Appendix E of 10 CFR 430
Electric storage water heaters	>12 kW5	<4000 (Btu/h)/gal	SL≤ 0.3 + 27/Vm%/h	10 CFR 431.106
Electric instantaneous water heaters	≤12 kW	≥4000 (Btu/h)/gal <2 gal	For applications outside U.S., see footnote (8).

CPC § 1323.11.1 Medium relevance — show source text
1323.11.1 Examination. Brazers shall be qualified by visual examination of the test coupon followed by sectioning. [NFPA 99:5.1.10.11.11.2]

1323.11.2 Brazing Procedure Specification. The brazing procedure specification shall address cleaning, joint clearance, overlap, internal purge gas, purge gas flow rate, and filler metal. [NFPA 99:5.1.10.11.11.3]

1323.11.3 Documentation. The brazing procedure qualification record and the record of brazer performance qualification shall document filler metal used, base metals, cleaning, joint clearance, overlap, internal purge gas and flow rate during brazing of coupon, and absence of internal oxidation in the completed coupon. [NFPA 99:5.1.10.11.11.4]

1323.11.4 Procedures. Brazing procedures qualified by a technically competent group or agency shall be permitted under the following conditions:

(1) The brazing procedure specification and the procedure qualification records meet the requirements of this code.

(2) The employer obtains a copy of both the brazing procedure specification and the supporting qualification records from the group or agency and signs and dates these records, thereby accepting responsibility for the qualifications that were performed by the group or agency.

(3) The employer qualifies at least one brazer following each brazing procedure specification used.

[NFPA 99:5.1.10.11.11.5]

1323.11.5 Conditions of Acceptance. An employer shall be permitted to accept brazer qualification records of a previous employer under the following conditions:

(1) The brazer has been qualified following the same or an equivalent procedure that the new employer uses.

(2) The new employer obtains a copy of the record of brazer performance qualification tests from the previous employer and signs and dates these records, thereby accepting responsibility for the qualifications performed by the previous employer. [NFPA 99:5.1.10.11.11.6]

1323.11.6 Qualifications. Performance qualifications of brazers shall remain in effect indefinitely, unless the brazer does not braze with the qualified procedure for a period exceeding 6 months or there is a specific reason to question the ability of the brazer. [NFPA 99:5.1.10.11.11.7]

1323.12 Breaching or Penetrating Medical Gas Pip- ing. Positive pressure patient medical gas piping and medical support gas piping shall not be breached or penetrated by any means or process that will result in residual copper particles or other debris remaining in the piping or affect the oxygen-clean interior of the piping. The breaching or penetrating process shall ensure that any debris created by the process remains contained within the work area. [NFPA 99:5.1.10.11.12.1, 5.1.10.11.12.2]

1323.13 Labeling, Identification and Operating Pres- sure. Color and pressure requirements shall be in accordance with Table 1305.1. [NFPA 99:5.1.11]

1323.13.1 Pipe Labeling. Piping shall be labeled by stenciling or adhesive markers that identify the patient medical gas, the medical support gas, or the vacuum system and include the following:

(1) Name of the gas or vacuum system or the chemical symbol per Table 1305.1.
CPC § 1323.10.1 Medium relevance — show source text
1323.10.1 Brazing. Brazing shall be performed by individuals who are qualified in accordance with Section 1323.11. [NFPA 99:5.1.10.11.10.5]

1323.10.2 Documentation. Prior to any installation work, the installer of medical gas and vacuum piping shall provide and maintain documentation on the job site

294 2025 CALIFORNIA PLUMBING CODE

), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS

for the qualification of brazing procedures and individual brazers that is required under Section 1323.11. [NFPA 99:5.1.10.11.10.6]

1323.10.3 Health Care Organization Personnel. Health care organization personnel shall be permitted to install piping systems if all of the requirements of Section 1323.10 are met during the installation. [NFPA 99:5.1.10.11.10.7]

1323.11 Qualification of Brazing Procedures and Brazing. Brazing procedures and brazer performance for the installation of medical gas and vacuum piping shall be qualified in accordance with either Section IX, “Welding and Brazing Qualifications,” of the ASME Boiler and Pressure Vessel Code, or AWS B2.2, both as modified by Section 1323.11.1 through Section 1323.11.4. [NFPA 99:5.1.10.11.11.1]

1323.11.1 Examination. Brazers shall be qualified by visual examination of the test coupon followed by sectioning. [NFPA 99:5.1.10.11.11.2]

1323.11.2 Brazing Procedure Specification. The brazing procedure specification shall address cleaning, joint clearance, overlap, internal purge gas, purge gas flow rate, and filler metal. [NFPA 99:5.1.10.11.11.3]

1323.11.3 Documentation. The brazing procedure qualification record and the record of brazer performance qualification shall document filler metal used, base metals, cleaning, joint clearance, overlap, internal purge gas and flow rate during brazing of coupon, and absence of internal oxidation in the completed coupon. [NFPA 99:5.1.10.11.11.4]

1323.11.4 Procedures. Brazing procedures qualified by a technically competent group or agency shall be permitted under the following conditions:

(1) The brazing procedure specification and the procedure qualification records meet the requirements of this code.

(2) The employer obtains a copy of both the brazing procedure specification and the supporting qualification records from the group or agency and signs and dates these records, thereby accepting responsibility for the qualifications that were performed by the group or agency.

(3) The employer qualifies at least one brazer following each brazing procedure specification used.

[NFPA 99:5.1.10.11.11.5]

1323.11.5 Conditions of Acceptance. An employer shall be permitted to accept brazer qualification records of a previous employer under the following conditions:

(1) The brazer has been qualified following the same or an equivalent procedure that the new employer uses.
California Plumbing Code Medium relevance — show source text
IN THOUSANDS OF BTU PER HOUR**|COMBINED APPLIANCE INPUT RATING IN THOUSANDS OF BTU PER HOUR|COMBINED APPLIANCE INPUT RATING IN THOUSANDS OF BTU PER HOUR|COMBINED APPLIANCE INPUT RATING IN THOUSANDS OF BTU PER HOUR|COMBINED APPLIANCE INPUT RATING IN THOUSANDS OF BTU PER HOUR|COMBINED APPLIANCE INPUT RATING IN THOUSANDS OF BTU PER HOUR|COMBINED APPLIANCE INPUT RATING IN THOUSANDS OF BTU PER HOUR|COMBINED APPLIANCE INPUT RATING IN THOUSANDS OF BTU PER HOUR| |VENT
HEIGHT
_H _
(feet)|FAN
+FAN|FAN
+NAT|NAT
+NAT|FAN
+FAN|FAN
+NAT|NAT
+NAT|FAN
+FAN|FAN
+NAT|NAT
+NAT|FAN
+FAN|FAN
+NAT|NAT
+NAT|FAN
+FAN|FAN
+NAT|NAT
+NAT| |6
8
10
15
20
30
50
100|NA
NA
NA
NA
NA
NA
NA
NA|74
80
84
NA
NA
NA
NA
NA|25
28
31
36
41
NA
NA
NA|NA
NA
NA
NA
NA
NA
NA
NA|119
130
138
152
NA
NA
NA
NA|46
53
56
67
75
NA
NA
NA|NA
NA
NA
NA
NA
NA
NA
NA|178
193
207
233
250
270
NA
NA|71
82
90
106
122
137
NA
NA|NA
NA
NA
NA
NA
NA
NA
NA|257
279
299
334
368
404
NA
NA|103
119
131
152
172
198
NA
NA|NA
NA
NA
523
565
615
NA
NA|351
384
409
467
508
564
620
NA|143
163
177
212
243
278
328
348|
CPC § 1.2. Medium relevance — show source text
1.2. Permits and Inspections

Builders who are constructing new buildings or remodeling existing buildings must conform to the following guidance documents.

A. The current provisions of city and county ordinances.

B. Rules on file with, or issued by, the CPUC.

C. Applicable rules and laws of the state of California, including, but not limited to, the following three codes.
```
- Plumbing codes


- Mechanical codes


- Electric codes
```
Local and state ordinances require applicants to obtain the appropriate permits and final inspections before PG&E establishes services to any building or structure.

In areas where local ordinances governing gas or electrical installations do not exist, or where inspections provided by local jurisdictions for such installations are not available, the applicant must obtain written confirmation from a qualified person that the facilities meet the requirements specified in this manual.

PG&E will not establish gas or electric service until the gas piping or electric service facilities are installed satisfactorily.

N OTE : Gas meter release forms obtained from a permitting agency must include the specific, requested pressure (e.g., 7-inches w.c., 2 psig, 5 psig).

1-3 2022 – 2023

Section 1, General

1.2. (continued)

PG&E’s inspection process includes service requirements that are not governed by local or state codes. Parts of the applicant’s installation may require approval by state, local, and PG&E inspectors .

1.2.1. Pre-Construction Meetings

All applicant-installed and shared construction jobs require a pre-construction meeting. Pre-construction meetings provide a time to discuss safety requirements and expectations and to complete a pre-construction meeting checklist.

The pre-construction meeting is intended to:
```
    - Introduce key individuals and exchange contact information.


    - Discuss the project timelines.


    - Advise personnel about construction obligations and requirements.


    - Review construction drawings and gas service records (GSRs).


    - Discuss warranty obligations.


    - Clarify roles and responsibilities.


    - Discuss proper PG&E operator qualifications for covered tasks.


    - Confirm if there is a Facility at Risk letter.


    - Confirm applicant responsibilities for as-built documentation.
```
The PG&E job owner is responsible for scheduling and facilitating pre-construction meetings and for ensuring that Form TD-4462M-F01, “Pre-Construction Meeting Checklist,” is completed. Participants in formal pre-construction meetings must include :
```
    - Applicant and the applicant’s representative


    - Applicant’s contractor


    - PG&E’s senior new business representative (SNBR), new business
```
representative (NBR), or industrial power engineer (IPE)
```
    - PG&E’s gas and electric inspectors


    - Representatives from all other joint trench utilities


    - Corrosion mechanic, as needed
```
Responsible PG&E employees and contract personnel must follow Company qualifications, operator qualifications (OQs), standards, and procedures related to job-specific inspections.

2022 – 2023 1-4

Residential

Nonresidential

Section 1, General

1.3. Applying for Building and Renovation Services
CPC § 101.2.2 Medium relevance — show source text
CFC—25: California Fire Code

101.2.2, 101.4.2, 301.3.1, 302.2, 307.1, 308.1, 802.2.1, 802.2.3, 803.2.3, 803.4.1.1, 803.4.1.2, 803.4.1.3, 803.4.1.4, 803.4.1.5, 803.4.1.6, Table 804.5.1.1(1), 904.1.5, 1011.6.1.1, 1303.1.2, 1305.2.8.1, 1305.2.14, 1305.2.14.1, 1401.2, 1501.1, 1501.5, 1502.1, 1502.1.1, 1502.2, 1502.3, 1504.1, 1507.1, 1507.2

CMC—25: California Mechanical Code

302.2, 702.7, 807.1, 902.1.1, 1008.1, 1305.2.7.1, 1305.2.8, 1305.2.8.1

CPC—25: California Plumbing Code

302.2, 408.1, 702.7, 1009.1, 1009.2, 1009.3, 1009.5, 1302.1.6, 1503.1

16-4 2025 CALIFORNIA EXISTING BUILDING CODE

on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

REFERENCED STANDARDS

CRC—25: California Residential Code

101.2, 101.4.1, 104.3.1, 109.3.3, 109.3.10, 302.2, 307.1, 308.1, 401.3, 402.1, 405.2.6, 502.2, 502.3, 502.4, 503.2, 503.3, 503.11, 505.2, 505.3, 507.3, 701.3, 702.4, 702.5, 706.2, 708.1, 805.2, 806.4, 809.1, 906.2, 907.1, 1011.2.1, 1103.1, 1103.2, 1103.3, 1104.1, 1201.4, 1302.1.2, 1302.1.3, 1302.1.3, 1303.1.3, 1401.2, 1402.1, 1402.2, 1402.2.1, 1402.3, 1402.4, 1402.5, 1402.6

ICC 300—2023: ICC Standard on Bleachers, Folding and Telescopic Seating and Grandstands

301.1.1, 401.1.1, 1401.1.1

ICC A117.1—2017: Accessible and Usable Buildings and Facilities
CPC § 1324.5.4.6 Medium relevance — show source text
1324.5.4.6 Leaks. Leaks, if any, shall be located, repaired (if permitted) or replaced (if required), and retested. [NFPA 99:5.1.12.2.6.6]

1324.5.4.7 Proof of Testing. The 24-hour standing pressure test of the positive pressure system shall be witnessed by an ASSE/IAPMO/ANSI 6020 inspector, an ASSE/IAPMO/ANSI 6030 verifier, or the Authority Having Jurisdiction or its designee. A form indicating that this test has been performed and witnessed shall be provided to the verifier at the start of the tests required in Section 1324.5.7 through Section 1324.5.11. [NFPA 99:5.1.12.2.6.7]

1324.5.5 Standing Pressure Tests – Medical Vac- uum Piping Systems. After successful completion of the initial pressure tests under Section 1324.5 through Section 1324.5.1.2, vacuum distribution piping shall be subjected to a standing vacuum test. [NFPA 99:5.1.12.2.7]

1324.5.5.1 Timeframe for Testing. Tests shall be conducted after installation of all components of the vacuum system. [NFPA 99:5.1.12.2.7.1]

1324.5.5.2 Length of Testing. The piping systems shall be subjected to a 24-hour standing vacuum test. [NFPA 99:5.1.12.2.7.2]

1324.5.5.3 Test Pressure. Test pressure shall be between 12 inches (305 mm) HgV and full vacuum.

[NFPA 99:5.1.12.2.7.3]

2025 CALIFORNIA PLUMBING CODE 297

), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS

1324.5.5.4 Disconnection of Testing Source. During the test, the source of test vacuum shall be disconnected from the piping system. [NFPA 99:5.1.12.2.7.4]

1324.5.5.5 Conclusion of Test. The leakage over the 24-hour test shall not exceed 0.5 percent of the starting pressure [e.g., 0.125 inch (0.3 mm) HgV starting at 25 inches (635 mm) HgV] except that attributed to specific changes in ambient temperature. [NFPA 99:5.1.12.2.7.5]

1324.5.5.6 Proof of Testing. The 24-hour standing pressure test of the vacuum system shall be witnessed by the Authority Having Jurisdiction or its designee. A form indicating that this test has been performed and witnessed shall be provided to the verifier at the start of the tests required in Section 1324.5.7 through Section 1324.5.11. [NFPA 99:5.1.12.2.7.6]

Frequently asked questions

Who must be ASSE/IAPMO/ANSI 6010‑certified?

Installers of medical gas and vacuum piped distribution systems and appurtenant piping (excluding permanently installed bulk source systems) must be certified per § 1323.10.

What brazing records must be on the job site?

The brazing procedure specification and the record of brazer performance qualification (including coupon results and purge details) must be provided and maintained on site before installation begins per § 1323.10.2 and § 1323.11.3.

How long must standing pressure/vacuum tests be run?

Standing tests for both positive‑pressure systems and vacuum distribution are 24 hours per the standing‑test rules in Chapter 1324 (examples at § 1324.5.4.7 and § 1324.5.5.2).

Who can witness the 24‑hour test?

For positive‑pressure tests an ASSE/IAPMO/ANSI 6020 inspector, an ASSE/IAPMO/ANSI 6030 verifier, or the Authority Having Jurisdiction (AHJ) (or designee) may witness the test; vacuum tests must be witnessed by the AHJ or designee. See § 1324.5.4.7 and § 1324.5.5.6.

What is the acceptable leakage for a 24‑hour vacuum test?

Leakage over the 24‑hour vacuum test must not exceed 0.5% of the starting pressure; the code provides the example 0.125 in HgV leakage starting at 25 in HgV. § 1324.5.5.5.

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California Plumbing Code