CPC · California Plumbing Code
Marking, Maintenance & End‑of‑Life
The CPC requires permanent product marking, owner‑responsible maintenance and documented decommissioning procedures for plumbing and alternate water systems.
Last reviewed: July 6, 2026
Overview
This portion of the California Plumbing Code (CPC) sets rules for identifying plumbing materials and systems, the routine inspection/maintenance needed to keep public and private water systems safe, and the code expectations when systems are retired or abandoned. The CPC requires manufacturer-applied identification on pipe, fittings, fixtures and devices (see §301.2.1) to support traceability and compliance verification .
The CPC also prescribes ongoing maintenance and testing obligations for safety-critical devices and alternate water systems: backflow assemblies must be tested at installation and on an annual schedule (and repaired or replaced if defective) per the cross‑connection chapter (see §603.4.2 and related provisions) . Alternate and nonpotable water systems (rainwater, recycled, graywater) must be identified by color/marking, supplied with operation and maintenance documentation, and inspected/maintained at the frequencies in Chapter 15–16 (see §§1506.8, 1601.5–1601.6) .
End‑of‑life rules cover deactivation, abandonment, or removal: the CPC requires procedures and documentation for decommissioning or abandonment of specialized systems (see chapter callouts for abandonment and deactivation in Chapter 16) and directs that defective or recalled components be remedied or replaced before re‑tagging or return to service .
In this section
Code references
Grounded in the retrieved California Plumbing Code — click a citation to read the verbatim passage:
CPC § 301.3.1 High relevance — show source text
3
301.3.1
301.3.1.1
301.3.1.2
301.4.1
301.7
301.8
303.1_Exception_
304.1_Exception_
310.11
310.12
310.13
310.14
310.15
311.1_ Note_
312.2
312.7
312.11
313.8
321.0
322.0
323.0
||||||||||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 3
GENERAL REGULATIONS
301.0 General.
301.1 Applicability. This chapter shall govern the general requirements, not specific to other chapters, for the installation of plumbing systems. 301.2 Minimum Standards. Pipe, pipe fittings, traps, fixtures, material, and devices used in a plumbing system shall be listed (third-party certified) by a listing agency (accredited conformity assessment body) as complying with the approved applicable recognized standards referenced in this code, and shall be free from defects. Unless otherwise provided for in this code, materials, fixtures, or devices used or entering into the construction of plumbing systems, or parts thereof shall be submitted to the Authority Having Jurisdiction for approval prior to being installed. 301.2.1 Marking. Each length of pipe and each pipe fitting, trap, fixture, material, and device used in a plumbing system shall have cast, stamped, or indelibly marked on it any markings required by the applicable referenced standards and listing agency, and the manufacturer’s mark or name, which shall readily identify the manufacturer to the end user of the product. Where required by the approved standard that applies, the product shall be marked with the weight and the quality of the product. Materials and devices used or entering into the construction of plumbing and drainage systems, or parts thereof shall be marked and identified in a manner satisfactory to the Authority Having Jurisdiction. Such marking shall be done by the manufacturer. Field markings shall not be acceptable.
Exception: Markings shall not be required on nipples created from cutting and threading of approved pipe.
301.2.2 Standards. Standards listed or referred to in this chapter or other chapters cover materials that will conform to the requirements of this code, where used in accordance with the limitations imposed in this or other chapters thereof and their listing. Where a standard covers materials of various grades, weights, quality, or configurations, the portion of the listed standard that is applicable shall be used.
CPC § 1603.4 Medium relevance — show source text
locking devices,
and verify operation.|After initial installation and
every 12 months thereafter| |
Inspect caution labels and
marking.|After initial installation and
every 12 months thereafter| |
Cross-connection inspection
and test.*|After initial installation and
every 12 months thereafter| |
Test water quality of rainwater
catchment systems required by
Section 1603.4 to maintain a
minimum water quality.|Every 12 months. After system
renovation or repair.|- The cross-connection test shall be performed in the presence of the Authority Having Jurisdiction in accordance with the requirements of this chapter.
1601.5.1 Maintenance Responsibility. The required maintenance and inspection of rainwater catchment systems shall be the responsibility of the property owner unless otherwise required by the Authority Having Jurisdiction.
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NONPOTABLE RAINWATER CATCHMENT SYSTEMS
1601.6 Operation and Maintenance Manual. An operation and maintenance manual for rainwater catchment systems required to have a permit in accordance with Section 1601.3, shall be supplied to the building owner by the system designer or installer . The operating and maintenance manual shall include the following:
(1) Diagram(s) of the entire system and the location of system components.
(2) Instructions for operating and maintaining the system.
(3) Instructions on maintaining the required water quality as for rainwater catchment systems .
(4) Details startup, shutdown, and deactivating the system for maintenance, repair, or other purposes.
(5) Applicable testing, inspection, and maintenance frequencies in accordance with Section 1601.5.
(6) A method of contacting the installer and/or manufacturer(s).
(7) Directions to the owner or occupant that the manual shall remain with the building throughout the life cycle of the structure.
1601.7 Minimum Water Quality Requirements. The minimum water quality for rainwater catchment systems shall comply with the applicable water quality requirements for the intended application as determined by the Authority Having Jurisdiction. Water quality for nonpotable rainwater catchment systems shall comply with Section 1603.4. In the absence of water quality requirements for harvested rainwa- ter, Table 1603.4 shall apply.
Exceptions:
(1) Water treatment is not required for rainwater catchment systems used for aboveground irrigation with a maximum storage capacity of 360 gallons (1363 L).
(2) Water treatment is not required for rainwater catchment systems used for surface, subsurface or drip irrigation. 1601.8 Material Compatibility. Rainwater catchment systems shall be constructed of materials that are compatible with the type of pipe and fitting materials, water treatment, and water conditions in the system. 1601.9 System Controls. Controls for pumps, valves, and other devices that contain mercury that come in contact with rainwater supply shall not be permitted. 1601.10 Separation Requirements. Underground rainwater catchment service piping shall be separated from the building sewer in accordance with Section 609.2.
CPC § 1505.14 Medium relevance — show source text
1505.14 Inspection and Testing . . . . . . . . .320
1505.15 Minimum Water Quality Requirements for Reclaimed (Recycled) Water . . . . . . . . . . . . .322
1505.16 Maintenance and Inspection . . . .322
Table 1505.16 Minimum Reclaimed (Recycled) Water Source Testing, Inspection, and Maintenance Frequency . . . . . . .322
1506.0 On-Site Treated Nonpotable Gray Water Systems . . . . . . . . . .322
1506.1 General . . . . . . . . . . . . . . . . . . . . .322
1506.2 Plumbing Plan Submission . . . . . .322
1506.3 System Changes . . . . . . . . . . . . .322
1506.4 Connections to Potable or Recycled Water Supply Systems . . . . . . . . . . . . . . . . . . . .322
1506.5 Water Pressure . . . . . . . . . . . . . . .322
1506.6 Initial Cross-Connection Test . . . .323
1506.7 On-Site Treated Nonpotable Gray Water System Materials . . .323
1506.8 On-Site Treated Nonpotable Gray Water Devices and Systems . . . . . . . . . . . . . . . . . . . .323
1506.9 On-Site Treated Nonpotable Gray Water System Color and Marking Information . . . . . . . . . . .323
1506.10 Design and Installation . . . . . . . . .323
1506.11 Valves . . . . . . . . . . . . . . . . . . . . . .323
1506.12 Signs . . . . . . . . . . . . . . . . . . . . . . .323
1506.13 Inspection and Testing . . . . . . . . .323
CHAPTER 16 NONPOTABLE RAINWATER
CATCHMENT SYSTEMS . . . . . . .325
1601.0 General . . . . . . . . . . . . . . . . . . . . .327
1601.1 Applicability . . . . . . . . . . . . . . . . . .327
1601.2 System Design . . . . . . . . . . . . . . .327
1601.3 Permit . . . . . . . . . . . . . . . . . . . . . .327
1601.4 Component Identification . . . . . . .327
1601.5 Maintenance and Inspection . . . .327
Table 1601.5 Minimum Alternate Water Source Testing, Inspection, and Maintenance Frequency . . . .327
1601.6 Operation and Maintenance Manual . . . . . . . . . . . . . . . . . . . . .328
1601.7 Minimum Water Quality Requirements . . . . . . . . . . . . . . . .328
1601.8 Material Compatibility . . . . . . . . . .328
1601.9 System Controls . . . . . . . . . . . . . .328
1601.10 Separation Requirements . . . . . . .328
CPC § 1504.2 Medium relevance — show source text
1504.2 Required Area of Subsurface Irrigation Fields, Subsoil Irrigation Fields, and Mulch Basins . . . . . . . . . . . . . . . .316
1504.3 Determination of Maximum
Absorption Capacity . . . . . . . . . . .316
Table 1504.2 Design of Six Typical Soils . . . . . .316
1504.4 Groundwater Level . . . . . . . . . . . .316
1504.5 Irrigation, Disposal Field and Mulch Basin Construction . . . . . .316
Table 1504.5.3 Subsoil Irrigation Field Construction . . . . . . . . . . . . . . . . .318
Table 1504.5.5 Subsurface Irrigation Design Criteria for Six Typical Soils . . . . .318
1504.6 Reserved . . . . . . . . . . . . . . . . . . .318
1504.7 Reserved . . . . . . . . . . . . . . . . . . .318
1504.8 Gray Water System Color and Marking Information . . . . . . . .318
1504.9 Other Collection and
Distribution Systems . . . . . . . . . . .318
1504.10 Testing . . . . . . . . . . . . . . . . . . . . .318
1504.11 Maintenance . . . . . . . . . . . . . . . . .318
1505.0 Recycled Water Supply Systems in Buildings . . . . . . . . . .318
1505.1 General . . . . . . . . . . . . . . . . . . . . .318
1505.2 Permit . . . . . . . . . . . . . . . . . . . . . .319
1505.3 System Changes . . . . . . . . . . . . .319
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TABLE OF CONTENTS
1505.4 Connections to Potable or Recycled Water Supply Systems . . . . . . . . . . . . . . . . . . . .319
1505.5 Water Pressure . . . . . . . . . . . . . . .319
1505.6 Initial Cross-Connection Test . . . .319
1505.7 Recycled Water Supply System Materials . . . . . . . . . . . . .319
1505.8 Recycled Water Supply System Color and Marking Information . . . . . . . . . . . . . . . . . .319
1505.9 Valves . . . . . . . . . . . . . . . . . . . . . .319
1505.10 Hose Bibbs . . . . . . . . . . . . . . . . . .320
1505.11 Required Appurtenances . . . . . . .320
1505.12 Pipe Separation in Trenches . . . .320
1505.13 Signage . . . . . . . . . . . . . . . . . . . .320
CPC § 5807.1.1 Medium relevance — show source text
5807.1.1 Classification. The hazard classification of the metal hydride storage system, as required by Section 5001.2.2, shall be based on the hydrogen stored without regard to the metal hydride content.
5807.1.2 Listed or approved systems. Metal hydride storage systems shall be listed or approved for the application and designed in a manner that prevents the addition or removal of the metal hydride by other than the original equipment manufacturer.
5807.1.3 Containers, design and construction. Compressed gas containers, cylinders and tanks shall be designed and constructed in accordance with Section 5303.2.
5807.1.4 Service life and inspection of containers. Metal hydride storage system cylinders, containers or tanks shall be inspected, tested and requalified for service at not less than 5-year intervals.
5807.1.5 Marking and labeling. Marking and labeling of cylinders, containers, tanks and systems shall be in accordance with Section 5303.4 and Sections 5807.1.5.1 through 5807.1.5.4.
5807.1.5.1 System marking. Metal hydride storage systems shall be marked with all of the following:
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FLAMMABLE GASES AND FLAMMABLE CRYOGENIC FLUIDS
Manufacturer’s name.
Service life indicating the last date the system can be used.
A unique code or serial number specific to the unit.
System name or product code that identifies the system by the type of chemistry used in the system.
Emergency contact name, telephone number or other contact information.
Limitations on refilling of containers to include rated charging pressure and capacity.
5807.1.5.2 Valve marking. Metal hydride storage system valves shall be marked with all of the following:
Manufacturer’s name.
Service life indicating the last date the valve can be used.
Metal hydride service in which the valve can be used, or a product code that is traceable to this information.
5807.1.5.3 Pressure relief device marking. Metal hydride storage system pressure relief devices shall be marked with all of the following:
Manufacturer’s name.
Metal hydride service in which the device can be used, or a product code that is traceable to this information.
Activation parameters to include temperature, pressure or both.
5807.1.5.3.1 Pressure relief devices integral to container valves. The required markings for pressure relief devices that are integral components of valves used on cylinders, containers and tanks shall be allowed to be placed on the valve.
5807.1.5.4 Pressure vessel markings. Cylinders, containers and tanks used in metal hydride storage systems shall be marked with all of the following:
Manufacturer’s name.
Design specification to which the vessel was manufactured.
Authorized body approving the design and initial inspection and test of the vessel.
Manufacturer’s original test date.
Unique serial number for the vessel.
Service life identifying the last date the vessel can be used.
System name or product code that identifies the system by the type of chemistry used in the system.
CPC § 1708.2 Medium relevance — show source text
(6) Ground-heat exchanger and building piping, valves, and operating controls, shall be set, adjusted, and operating as required.
(7) The system shall be labeled at the loop charging valves with a permanent-type label, indicating the type of heat transfer fluid used. Where antifreeze is used, the labels shall indicate the antifreeze type and concentration.
(8) Supply and return lines, as well as associated isolation valves from individual boreholes or water wells, shall be identified and tagged.
(9) Supply and return lines on submerged systems shall be identified in an approved manner, at the point of entry to a surface water resource.
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1708.2 Operation and Maintenance Manual. An operation and maintenance manual for the geothermal system shall be provided to the owner. The manual shall include information on required testing and maintenance of the system. Training shall be provided on the system’s operation, maintenance requirements, and on the content of the operation and maintenance manual. The operation and maintenance manual shall contain a layout of the ground-heat exchanger and building loop.
1708.3 Labeling and Marking. Ground source heat pump ground-loop system piping shall be marked with tape, metal tags, or other methods where it enters a building. The marking shall indicate the following words: “GROUND SOURCE HEAT PUMP-LOOP SYSTEM.” The marking shall indicate antifreeze used in the system by name and concentration.
1708.4 Documentation. The ground source heat pump system as-built installation drawings and instructions shall be provided to the building owner or designated agent.
1708.5 Maintenance. The periodic maintenance required, in accordance with the design requirements, shall be provided and be made available to the owner or designated agent.
1708.6 Records. The ground source heat pump system construction documents shall be provided to the owner.
1708.7 System Start-Up. System start-up shall be in accordance with ANSI/ CSA/IGSHPA C448 and Section 1708.0.
1708.8 Contaminants. Particulate contaminants shall be removed from the indoor piping system prior to initial start up.
1709.0 Decommissioning and Abandonment. 1709.1 General. Decommissioning of geothermal systems shall comply with ANSI/ CSA/IGSHPA C448. Prior to the abandonment or decommissioning of geothermal systems, the owner shall obtain the necessary permits from the Authority Having Jurisdiction.
Part II – Closed-Loop Systems.
1710.0 General.
1710.1 Applicability. Part II of this chapter shall apply to geothermal closed-loop systems such as, but not limited to, building systems coupled with a closed-loop system using water-based fluid as a heat transfer medium.
1710.2 Piping and Tubing. Piping and tubing for closedloop systems shall be in accordance Section 1703.2 and Table 1703.2.
1710.3 Borehole Piping and Tubing. Borehole piping or tubing for vertical and horizontally drilled closed-loop systems shall have a minimum wall thickness equal to SDR-11 and shall have a minimum pressure rating of not less than 160 psi (1103 kPa) at 73°F (23°C).
CPC § 602.4 Medium relevance — show source text
602.4 Approval by Authority. No water piping supplied by a private water supply system shall be connected to any other source of supply without the approval of the Authority Having Jurisdiction, Health Department, or other department having jurisdiction.
603.0 Cross-Connection Control.
603.1 General. Cross-connection control shall be provided in accordance with the provisions of this chapter.
No person shall install a water-operated equipment or mechanism, or use a water-treating chemical or substance, where it is found that such equipment, mechanism, chemical, or substance causes pollution or contamination of the domestic water supply. Such equipment or mechanism shall be permitted where equipped with an approved backflow prevention device or assembly.
603.2 Approval of Devices or Assemblies. Before a device or an assembly is installed for the prevention of backflow, it shall have first been approved by the Authority Having Jurisdiction. Devices or assemblies shall be tested in accordance with recognized standards or other standards acceptable to the Authority Having Jurisdiction. Backflow prevention devices and assemblies shall comply with Table 603.2, except for specific applications and provisions as stated in Section 603.5.1 through Section 603.5.22.
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WATER SUPPLY AND DISTRIBUTION
Devices or assemblies installed in a potable water supply system for protection against backflow shall be maintained in good working condition by the person or persons having control of such devices or assemblies. Such devices or assemblies shall be tested at the time of installation, repair, or relocation and not less than on an annual schedule thereafter, or more often where required by the Authority Having Jurisdiction. Where found to be defective or inoperative, the device or assembly shall be repaired or replaced. No device or assembly shall be removed from use or relocated or other device or assembly substituted, without the approval of the Authority Having Jurisdiction.
Testing or maintenance shall be performed by a certified backflow assembly tester or repairer certified in accordance with ASSE/IAPMO/ANSI Series 5000 or any other additional certification approved by the Authority Having Jurisdiction.
603.3 Backflow Prevention Devices, Assemblies, and Methods. Backflow prevention devices, assemblies, and methods shall comply with Section 603.3.1 through Section 603.3.12.
603.3.1 Air Gap. The minimum air gap to afford backflow protection shall be in accordance with Table 603.3.1. 603.3.2 Atmospheric Vacuum Breaker (AVB). An atmospheric vacuum breaker consists of a body, a checking member, and an atmospheric port.
603.3.3 Hose Connection Backflow Preventer. A hose connection backflow preventer consists of two independent check valves with an independent atmospheric vent between and a means of field testing and draining.
603.3.4 Double Check Valve Backflow Prevention Assembly (DC). A double check valve backflow prevention assembly consists of two independently acting internally loaded check valves, four properly located test cocks, and two isolation valves.
603.3.5 Pressure Vacuum Breaker Backflow Pre- vention Assembly (PVB). A pressure vacuum breaker backflow prevention assembly consists of a loaded air inlet valve, an internally loaded check valve, two properly located test cocks, and two isolation valves.
CPC § 602.0 Medium relevance — show source text
602.0 Unlawful Connections.
602.1 Prohibited Installation. No installation of potable water supply piping, or part thereof, shall be made in such a manner that it will be possible for used, unclean, polluted, or contaminated water, mixtures, or substances to enter a portion of such piping from a tank, receptor, equipment, or plumbing fixture by reason of backsiphonage, suction, or other cause, either during normal use and operation thereof, or where such tank, receptor, equipment, or plumbing fixture is flooded or subject to pressure exceeding the operating pressure in the hot or cold water piping. 602.2 Cross-Contamination. No person shall make a connection or allow one to exist between pipes or conduits carrying domestic water supplied by a public or private building supply system, and pipes, conduits, or fixtures containing or carrying water from any other source or containing or carrying water that has been used for any purpose whatsoever, or piping carrying chemicals, liquids, gases, or substances whatsoever, unless there is provided a backflow prevention device approved for the potential hazard and maintained in accordance with this code. Each point of use shall be separately protected where potential cross-contamination of individual units exists.
602.3 Backflow Prevention. No plumbing fixture, device, or construction shall be installed or maintained, or shall be connected to a domestic water supply, where such installation or connection provides a possibility of polluting such water supply or cross-connection between a distributing system of water for drinking and domestic purposes and water that becomes contaminated by such plumbing fixture, device, or construction unless there is provided a backflow prevention device approved for the potential hazard.
602.4 Approval by Authority. No water piping supplied by a private water supply system shall be connected to any other source of supply without the approval of the Authority Having Jurisdiction, Health Department, or other department having jurisdiction.
603.0 Cross-Connection Control.
603.1 General. Cross-connection control shall be provided in accordance with the provisions of this chapter.
No person shall install a water-operated equipment or mechanism, or use a water-treating chemical or substance, where it is found that such equipment, mechanism, chemical, or substance causes pollution or contamination of the domestic water supply. Such equipment or mechanism shall be permitted where equipped with an approved backflow prevention device or assembly.
603.2 Approval of Devices or Assemblies. Before a device or an assembly is installed for the prevention of backflow, it shall have first been approved by the Authority Having Jurisdiction. Devices or assemblies shall be tested in accordance with recognized standards or other standards acceptable to the Authority Having Jurisdiction. Backflow prevention devices and assemblies shall comply with Table 603.2, except for specific applications and provisions as stated in Section 603.5.1 through Section 603.5.22.
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WATER SUPPLY AND DISTRIBUTION
CPC § 603.3 Medium relevance — show source text
Testing or maintenance shall be performed by a certified backflow assembly tester or repairer certified in accordance with ASSE/IAPMO/ANSI Series 5000 or any other additional certification approved by the Authority Having Jurisdiction.
603.3 Backflow Prevention Devices, Assemblies, and Methods. Backflow prevention devices, assemblies, and methods shall comply with Section 603.3.1 through Section 603.3.12.
603.3.1 Air Gap. The minimum air gap to afford backflow protection shall be in accordance with Table 603.3.1. 603.3.2 Atmospheric Vacuum Breaker (AVB). An atmospheric vacuum breaker consists of a body, a checking member, and an atmospheric port.
603.3.3 Hose Connection Backflow Preventer. A hose connection backflow preventer consists of two independent check valves with an independent atmospheric vent between and a means of field testing and draining.
603.3.4 Double Check Valve Backflow Prevention Assembly (DC). A double check valve backflow prevention assembly consists of two independently acting internally loaded check valves, four properly located test cocks, and two isolation valves.
603.3.5 Pressure Vacuum Breaker Backflow Pre- vention Assembly (PVB). A pressure vacuum breaker backflow prevention assembly consists of a loaded air inlet valve, an internally loaded check valve, two properly located test cocks, and two isolation valves. This device shall be permitted to be installed indoors where provisions for spillage are provided. 603.3.6 Spill-Resistant Pressure Vacuum Breaker (SVB). A pressure-type vacuum breaker backflow prevention assembly consists of one check valve force loaded closed and an air inlet vent valve force loaded open to atmosphere, positioned downstream of the check valve and located between and including two tightly closing shutoff valves and test cocks. 603.3.7 Reduced-Pressure Principle Backflow Prevention Assembly (RP). A reduced-pressure principle backflow prevention assembly consists of two independently acting internally loaded check valves, a differential pressure relief valve, four properly located test cocks, and two isolation valves.
603.3.8 Double Check Detector Fire Protection Backflow Prevention Assembly. A double check valve backflow prevention assembly with a parallel
detector assembly consisting of a water meter and a double check valve backflow prevention assembly (DC).
603.3.9 Reduced Pressure Detector Fire Protec- tion Backflow Prevention Assembly. A reducedpressure principle backflow prevention assembly with a parallel detector assembly consisting of a water meter and a reduced-pressure principle backflow prevention assembly (RP).
603.3.10 Dual Check Backflow Preventer. A dual check backflow preventer consists of two independently acting check valves, force loaded to a normally closed position.
603.3.11 Laboratory Faucet Backflow Preven- ters. Laboratory faucet backflow preventers shall comply with ASSE 1035.
603.3.12 Backflow Preventer with Intermediate Atmospheric Vent. A backflow preventer with intermediate atmospheric vent consists of two independently acting check valves, force loaded to a normally closed position, and an intermediate chamber with a means for automatically venting to atmosphere, force loaded to a normally open position. 603.4 General Requirements. Assemblies shall comply with listed standards and be acceptable to the Authority Having Jurisdiction, with jurisdiction over the selection and installation of backflow prevention assemblies.
**603.4.1 Backflow Prevention Valve.
CPC § 1708.1 Medium relevance — show source text
1708.1 General. . . . . . . . . . . . . . . . . . . . . 352
1708.2 Operation and Maintenance Manual . . . . . . . . . . . . . . . . . . . . . 352
1708.3 Labeling and Marking . . . . . . . . . . 352
1708.4 Documentation . . . . . . . . . . . . . . . 352
1708.5 Maintenance . . . . . . . . . . . . . . . . . 352
1708.6 Records . . . . . . . . . . . . . . . . . . . . 352
1708.7 System Start-Up . . . . . . . . . . . . . . 352
1708.8 Contaminants . . . . . . . . . . . . . . . . 352
1709.0 Decommissioning and Abandonment . . . . . . . . . . . . . . . . 352
1709.1 General. . . . . . . . . . . . . . . . . . . . . 352
Part II Closed-Loop Systems . . . . . . . . 352
1710.0 General. . . . . . . . . . . . . . . . . . . . . 352
1710.1 Applicability. . . . . . . . . . . . . . . . . . 352
1710.2 Piping and Tubing. . . . . . . . . . . . . 352
1710.3 Borehole Piping and Tubing . . . . . 352
1710.4 Underground Fittings . . . . . . . . . . 352
1710.5 Verification . . . . . . . . . . . . . . . . . . 353
1710.6 Vertical Bores . . . . . . . . . . . . . . . . 353
1711.0 Ground-Heat Exchanger Testing . . . . . . . . . . . . . . . . . . . . . 353
1711.1 Testing . . . . . . . . . . . . . . . . . . . . . 353
1711.2 Individual Loop Pressure Testing . . . . . . . . . . . . . . . . . . . . . 353
1711.3 Field Pressure Testing – Final . . . 353
1711.4 Field Flow Testing – Final. . . . . . . 353
Part III Open-Loop Systems . . . . . . . . . . 353
1712.0 General. . . . . . . . . . . . . . . . . . . . . 353
1712.1 Applicability. . . . . . . . . . . . . . . . . . 353
1712.2 Test Wells. . . . . . . . . . . . . . . . . . . 353
1712.3 Installation of Water Wells . . . . . . 354
1712.4 Setbacks. . . . . . . . . . . . . . . . . . . . 354
1713.0 Open Ground Water Systems . . . 354
1713.1 General. . . . . . . . . . . . . . . . . . . . . 354
CPC § 1506.0 Medium relevance — show source text
ON-SITE TREATED NONPOTABLE
GRAY WATER SYSTEMS . . . . . . . . . . . . . . . . . . . . . .1506.0
Color and marking information . . . . . . . . . . . . . .1506.8 Connections to other systems . . . . . . . . . . . . . . .1503.3 Devices and systems . . . . . . . . . . . . . . . . . . . . . .1506.7
Disinfection . . . . . . . . . . . . . . . . . . . . . . . . . . .1506.10.6
Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1506.6
Minimum water quality requirements . . . . . . . . . .1501.7 Operation and maintenance manual . . . . . . . . . .1501.6 Signage . . . . . . . . . . . . . . . . .601.3.3, 1501.9 – 1501.9.2,
1506.0 – 1506.3
System changes . . . . . . . . . . . . . . . . . . . . . . . . .1506.3
Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1501.1.1
OPEN TRENCH WORK . . . . . . . . . . . . . . . . . . . . . . . .314.3
OPENING, EFFECTIVE,
DEFINITION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .207.0
OSHPD 1R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .301.8
OVERFLOWS . . . . . . .404.2, 413.5, 607.5, 1603.9, 1603.9.1
– P –
PATIENT CARE SPACE, DEFINITION . . . . . . . . . . . . .218.0
PENALTIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106.0
PENETRATION
FIRESTOP SYSTEMS . . . . . . . . . . .218.0, 1404.3, 1405.3
PERCOLATION TESTS . . . . . . . . . . . . . . . .1504.3, H 401.0
PERMITS, REQUIRED . . . . . . . . . . . . .104.1, 502.1, 1501.3,
1601.3, E 101.2, E 302.7,
H 101.9, K 101.3
PERMITS FEES . . . . . . . . . . . . . . . . . . . .104.5, Table 104.5
PIPING
CPC § 1506.11 Medium relevance — show source text
1506.11 Valves . . . . . . . . . . . . . . . . . . . . . .323
1506.12 Signs . . . . . . . . . . . . . . . . . . . . . . .323
1506.13 Inspection and Testing . . . . . . . . .323
CHAPTER 16 NONPOTABLE RAINWATER
CATCHMENT SYSTEMS . . . . . . .325
1601.0 General . . . . . . . . . . . . . . . . . . . . .327
1601.1 Applicability . . . . . . . . . . . . . . . . . .327
1601.2 System Design . . . . . . . . . . . . . . .327
1601.3 Permit . . . . . . . . . . . . . . . . . . . . . .327
1601.4 Component Identification . . . . . . .327
1601.5 Maintenance and Inspection . . . .327
Table 1601.5 Minimum Alternate Water Source Testing, Inspection, and Maintenance Frequency . . . .327
1601.6 Operation and Maintenance Manual . . . . . . . . . . . . . . . . . . . . .328
1601.7 Minimum Water Quality Requirements . . . . . . . . . . . . . . . .328
1601.8 Material Compatibility . . . . . . . . . .328
1601.9 System Controls . . . . . . . . . . . . . .328
1601.10 Separation Requirements . . . . . . .328
1601.11 Abandonment . . . . . . . . . . . . . . . .328
1601.12 Sizing . . . . . . . . . . . . . . . . . . . . . .328
1602.0 Nonpotable Rainwater Catchment Systems . . . . . . . . . . .328
1602.1 General . . . . . . . . . . . . . . . . . . . . .328
1602.2 Plumbing Plan Submission . . . . . .328
1602.3 System Changes . . . . . . . . . . . . .328
1602.4 Connections to Potable or Reclaimed (Recycled) Water Systems . . . . . . . . . . . . . . .328
1602.5 Initial Cross-Connection Test . . . .328
1602.6 Sizing . . . . . . . . . . . . . . . . . . . . . .328
1602.7 Rainwater Catchment System Materials . . . . . . . . . . . . . . . . . . . .329
1602.8 Rainwater Catchment System Color and Marking Information . . .329
1602.9 Deactivation and Drainage for Cross-Connection Test . . . . . . . . .329
1603.0 Design and Installation . . . . . . . . .329
1603.1 Rainwater Catchment Systems . . .329
1603.2 Outside Hose Bibbs . . . . . . . . . . .329
1603.3 Rainwater Catchment
Collection Surfaces . . . . . . . . . . . .329
1603.4 Minimum Water Quality . . . . . . . .329
Frequently asked questions
What must be permanently marked on plumbing materials?
Manufacturers must cast, stamp, or indelibly mark pipe, fittings, traps, fixtures and devices with required standard markings and the manufacturer’s name or mark so the product is readily identifiable to the end user (§301.2.1) .
Who is responsible for maintenance and testing, and how often?
The owner or responsible person must maintain devices and systems; backflow assemblies must be field‑tested at installation and not less than annually (or more often if the AHJ requires) by a certified tester (§603.4.2). Alternate water systems carry specified inspection/maintenance intervals and must include an operation & maintenance manual for the owner (§603.4.2; §§1601.5–1601.6) .
What are the CPC expectations when a system is taken out of service or abandoned?
The CPC requires deactivation, drainage, tagging and documented procedures for decommissioning or abandonment of systems (see the abandonment/deactivation provisions in Chapter 16 and related sections); defective or recalled parts must be replaced or remedied before returning equipment to service
More in California Plumbing Code
- Administration
- Definitions
- General Regulations
- Plumbing Fixtures and Fixture Fittings
- Water Heaters
- Water Supply and Distribution
- Sanitary Drainage (Drain, Waste, and Vent)
- Indirect Wastes
- Vents
- Traps and Interceptors
- Storm Drainage
- Fuel Gas Piping
- Health Care Facilities — Medical Gas and Medical Vacuum Systems
- Alternate Water Sources and Nonpotable Rainwater Catchment Systems
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