CPC · California Plumbing Code

General requirements & permits

This hub orients you to CPC Chapter 1 administration and Chapter 3 general requirements that define when permits are required, what must be submitted, exemptions, inspection expectations, and permit validity.

Last reviewed: July 6, 2026

Overview

This hub covers the CPC rules that govern administration, permit issuance, inspections, and the broad technical requirements that apply to plumbing work statewide. Key administrative and permit provisions are found in Chapter 1 (Division II), including the permit requirement, exemptions, application and plan submittal rules, issuance and expiration, and fees (see §104.0, §104.1, §104.2, §104.3, §104.4, §104.5) .

You’ll also need the general installation and materials rules in Chapter 3—these set minimum standards for products, marking, workmanship, and protection of piping that apply whenever permits are required (see §301.0–§301.2) . Together these provisions show what work needs a permit, what documents and approvals the Authority Having Jurisdiction may require, and the basic technical expectations inspectors use to judge compliance .

In this section

Code references

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

  • CPC § 104.0 High relevance — show source text

    104.0 Permits.

    104.1 Permits Required. It shall be unlawful for a person, firm, or corporation to make an installation, alteration, repair, replacement, or remodel a plumbing system regulated by this code except as permitted in Section 104.2, or to cause the same to be done without first obtaining a separate plumbing permit for each separate building or structure. 104.2 Exempt Work. A permit shall not be required for the following:

    (1) The stopping of leaks in drains, soil, waste, or vent pipe, provided, however, that a trap, drainpipe, soil, waste, or vent pipe become defective, and it becomes necessary to remove and replace the same with new material, the same shall be considered as new work and a permit shall be procured and inspection made as provided in this code.

    (2) The clearing of stoppages, including the removal and reinstallation of water closets, or the repairing of leaks in pipes, valves, or fixtures, provided such repairs do not involve or require the replacement or rearrangement of valves, pipes, or fixtures.

    Exemption from the permit requirements of this code shall not be deemed to grant authorization for work to be done in violation of the provisions of the code or other laws or ordinances of this jurisdiction. 104.3 Application for Permit. To obtain a permit, the applicant shall first file an application therefore in writing on a form furnished by the Authority Having Jurisdiction for that purpose. Such application shall:

    (1) Identify and describe the work to be covered by the permit for which application is made.

    (2) Describe the land upon which the proposed work is to be done by legal description, street address, or similar description that will readily identify and locate the proposed building or work.

    (3) Indicate the use or occupancy for which the proposed work is intended.

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    DIVISION II SCOPE AND ADMINISTRATION

    (4) Be accompanied by construction documents in accordance with Section 104.3.1.

    (5) Be signed by the permittee or the permittee’s authorized agent. The Authority Having Jurisdiction shall be permitted to require evidence to indicate such authority.

    (6) Give such other data and information in accordance with the Authority Having Jurisdiction.

    104.3.1 Construction Documents. Construction documents, engineering calculations, diagrams, and other data shall be submitted in two or more sets, or in a digital format where permitted by the Authority Having Jurisdiction, with each application for a permit. The construction documents, computations, and specifications shall be prepared by, and the plumbing designed by, a registered design professional. Construction documents shall be drawn to scale with clarity to identify that the intended work to be performed is in accordance with the code.

    Exception: The Authority Having Jurisdiction shall be permitted to waive the submission of construction documents, calculations, or other data where the Authority Having Jurisdiction finds that the nature of the work applied for is such that reviewing of construction documents is not necessary to obtain compliance with the code.

    104.3.2 Plan Review Fees. Where a plan or other data is required to be submitted in accordance with Section 104.3.1, a plan review fee shall be paid at the time of submitting construction documents for review.

    The plan review fees for plumbing work shall be determined and adopted by this jurisdiction.

  • CPC § 507.25 High relevance — show source text

    507.25, 508.4

    Approval requirements . . . . . . . . . . . . . . . . . . . . . .501.1 Approved standards . . . . . .Table 501.1(1), 505.3, 505.4 Clearances. . . . . . . . . . . . . . . . . . . . . . 504.3 – 504.3.2,

    508.1, 508.2.1

    Combustion air required . . . . . . . . . . . . . . . . . . . .506.0

    Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . .604.13

    Dual purpose, definition . . . . . . . . . . . . . . . . . . . .225.0

    Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .225.0

    Garages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .507.13 Inspections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .503.2

    Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .507.0

    Location . . . . . . . . . . . . . . . . . . .504.1, 507.12 – 507.15

    Oil-burning and other . . . . . . . . . . . . . . . . . . . . . .505.0 Permits required . . . . . . . . . . . . . . . . . . . . . . . . . .502.0

    Pressure-relief valves . . . . . . . . . . .504.4, 504.6, 505.2,

    608.2 – 608.5

    Protection . . . . . . . . . . . . . . . . . . .504.3 – 504.6, 505.2,

    507.2, 507.8, 507.10,

    507.14.1, 507.24

    Relief valve discharge . . . . . . . . . . . . . . . . . . . . . .608.5 Seismic provisions . . . . . . . . . . . . . . . . . . . . . . . . .507.2 Temperature and pressure-relief valves . . . . . . . . . . . . . . .504.6, 505.2 Temperature-limiting devices . . . . . . . . . . . . . . . . .504.5

    Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . .509.0, 510.0

    Water heating system requirements . . . . . . . . . . . .501.2 WATER SOFTENERS . . . . . . . . . . . . . . . . 611.4, Table 611.4

  • CPC § 101.1. High relevance — show source text

    ORDINANCE NO.

    An ordinance of the [JURISDICTION] adopting the 2024 edition of the Uniform Plumbing Code, regulating and controlling the design, construction, quality of materials, erection, installation, alteration, repair, location, relocation, replacement, addition to, use or maintenance of plumbing systems in the [JURISDICTION]; providing for the issuance of permits and collection of fees therefor; repealing Ordinance No. of the [JURISDICTION] and all other ordinances and parts of the ordinances in conflict therewith.

    The [GOVERNING BODY] of the [JURISDICTION] does ordain as follows:

    Section 1 Codes Adopted by Reference. That certain documents, three (3) copies of which are on file in the office of the [JURISDICTION'S KEEPER OF RECORDS] and the [JURISDICTION], being marked and designated as the 2024 Uniform Plumbing Code, including Appendix Chapters [FILL IN THE APPENDIX CHAPTERS BEING ADOPTED], as published by the International Association of Plumbing and Mechanical Officials, be and is hereby adopted as the Code of the [JURISDICTION], in the State of [STATE NAME] regulating and controlling the design, construction, quality of materials, erection, installation, alteration, repair, location, relocation, replacement, addition to, use or maintenance of plumbing systems as herein provided; providing for the issuance of permits and collection of fees therefor; and each and all of the regulations, provisions, penalties, conditions and terms of such 2024 Uniform Plumbing Code on file in the office of the

    [JURISDICTION] are hereby referred to, adopted, and made a part hereof, as if fully set out in this ordinance.

    Section 2 Modifications. The following sections are hereby revised: Section 101.1. Insert: [NAME OF JURISDICTION] Section 104.5. Insert: [APPROPRIATE FEE SCHEDULE]

    Section 3 Conflicting Ordinances Repealed. That Ordinance No. of [JURISDICTION] entitled

    [TITLE OF THE ORDINANCE OR ORDINANCES IN EFFECT AT THE PRESENT TIME SO THAT THEY WILL BE REPEALED BY MENTION] and all other ordinances or parts of ordinances in conflict herewith are hereby repealed.

    Section 4 Preemption. [JURISDICTION] hereby fully occupies and preempts the entire field of regulation of design, construction, quality of materials, erection, installation, alteration, repair, location, relocation, replacement, addition to, use or maintenance of plumbing systems; and provision for the issuance of permits and collection of fees therefor; within the boundaries of [JURISDICTION]. [AS APPROPRIATE] Cities, towns, and counties or other municipalities may enact only those laws and ordinances relating to this field as specifically authorized by state law and consistent with this ordinance. Local laws and ordinances that are inconsistent with, more restrictive than, or exceed the requirements of [ORDINANCE NO.] shall not be enacted and are hereby expressly preempted and repealed, regardless of the nature of the code, charter, or home rule status of such city, town, county, or municipality.

  • CPC § 101.0 High relevance — show source text

    101.0 General . . . . . . . . . . . . . . . . . . . . . .21

    101.1 Title . . . . . . . . . . . . . . . . . . . . . . . . .21

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    TABLE OF CONTENTS

    101.2 Scope . . . . . . . . . . . . . . . . . . . . . . .21

    101.3 Purpose . . . . . . . . . . . . . . . . . . . . .21

    101.4 Unconstitutional . . . . . . . . . . . . . . .21

    101.5 Validity . . . . . . . . . . . . . . . . . . . . . .21

    102.0 Applicability . . . . . . . . . . . . . . . . . . .21

    102.1 Conflicts Between Codes . . . . . . . .21

    102.2 Existing Installations . . . . . . . . . . . .21

    102.3 Maintenance . . . . . . . . . . . . . . . . . .21

    102.4 Additions, Alterations, Renovations, or Repairs . . . . . . . . .21

    102.5 Health and Safety . . . . . . . . . . . . . .21

    102.6 Changes in Building Occupancy . . .21

    102.7 Moved Structures . . . . . . . . . . . . . .21

    102.8 Appendices . . . . . . . . . . . . . . . . . . .21

    103.0 Duties and Powers of the

    Authority Having Jurisdiction . . . . .22

    103.1 General . . . . . . . . . . . . . . . . . . . . . .22

    103.2 Liability . . . . . . . . . . . . . . . . . . . . . .22

    103.3 Applications and Permits . . . . . . . .22

    103.4 Right of Entry . . . . . . . . . . . . . . . . .22

    104.0 Permits . . . . . . . . . . . . . . . . . . . . . .22

    104.1 Permits Required . . . . . . . . . . . . . .22

    104.2 Exempt Work . . . . . . . . . . . . . . . . .22

    104.3 Application for Permit . . . . . . . . . . .22

    104.4 Permit Issuance . . . . . . . . . . . . . . .23

    104.5 Fees . . . . . . . . . . . . . . . . . . . . . . . .24

    105.0 Inspections and Testing . . . . . . . . .24

    105.1 General . . . . . . . . . . . . . . . . . . . . . .24

    105.2 Required Inspections . . . . . . . . . . .24

    105.3 Testing of Systems . . . . . . . . . . . . .25

    105.4 Connection to Service Utilities . . . .25

  • CPC § 104.5 High relevance — show source text

    accordance with the requirements of the code and other pertinent laws and ordinances and that the fees specified in Section 104.5 have been paid, the Authority Having Jurisdiction shall issue a permit therefore to the applicant. 104.4.1 Approved Plans or Construction Docu- ments. Where the Authority Having Jurisdiction issues the permit where plans are required, the Authority Having Jurisdiction shall endorse in writing or stamp the construction documents “APPROVED.” Such approved construction documents shall not be changed, modified, or altered without authorization from the Authority Having Jurisdiction, and the work shall be done in accordance with approved plans.

    The Authority Having Jurisdiction shall be permitted to issue a permit for the construction of a part of a plumbing system before the entire construction documents for the whole system have been submitted or approved, provided adequate information and detailed statements have been filed in accordance with the pertinent requirements of this code. The holder of such permit shall be permitted to proceed at the holder’s risk without assurance that the permit for the entire building, structure, or plumbing system will be granted. 104.4.2 Validity of Permit. The issuance of a permit or approval of construction documents shall not be construed to be a permit for, or an approval of, a violation of the provisions of this code or other ordinance of the jurisdiction. No permit presuming to give authority to violate or cancel the provisions of this code shall be valid.

    The issuance of a permit based upon plans, specifications, or other data shall not prevent the Authority Having Jurisdiction from thereafter requiring the correction of errors in said plans, specifications, and other data or from preventing building operations being carried on thereunder where in violation of this code or of other ordinances of this jurisdiction. 104.4.3 Expiration. A permit issued by the Authority Having Jurisdiction under the provisions of this code shall expire by limitation and become null and void where the work authorized by such permit is not commenced within 180 days from the date of such permit, or where the work authorized by such permit is suspended or abandoned at a time after the work is commenced for a period of 180 days. Before such work is recommenced, a new permit shall first be obtained to do so, and the fee, therefore, shall be one-half the amount required for a new permit for such work, provided no changes have been made or will be made in the original construction documents for such work, and provided further that such suspensions or abandonment has not exceeded 1 year. 104.4.3.1 Expiration. [BSC] On or after January 1, 2019, every permit issued shall become invalid unless the work on the site authorized by such permit is commenced within 12 months after its issuance or if the work authorized on the site by such permit is suspended or abandoned for a period of 12 months after the time the work is commenced. The building official is authorized to grant, in writing, one or more extensions of time, for periods not more than 180

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    DIVISION II SCOPE AND ADMINISTRATION

    days each. The extension shall be requested in writ- ing and justifiable cause demonstrated. (See Health and Safety Code Section 18938.5 and 18938.6). **104.4.4 Extensions.

  • CPC § 102.8 High relevance — show source text

    102.8 Appendices . . . . . . . . . . . . . . . . . . .21

    103.0 Duties and Powers of the

    Authority Having Jurisdiction . . . . .22

    103.1 General . . . . . . . . . . . . . . . . . . . . . .22

    103.2 Liability . . . . . . . . . . . . . . . . . . . . . .22

    103.3 Applications and Permits . . . . . . . .22

    103.4 Right of Entry . . . . . . . . . . . . . . . . .22

    104.0 Permits . . . . . . . . . . . . . . . . . . . . . .22

    104.1 Permits Required . . . . . . . . . . . . . .22

    104.2 Exempt Work . . . . . . . . . . . . . . . . .22

    104.3 Application for Permit . . . . . . . . . . .22

    104.4 Permit Issuance . . . . . . . . . . . . . . .23

    104.5 Fees . . . . . . . . . . . . . . . . . . . . . . . .24

    105.0 Inspections and Testing . . . . . . . . .24

    105.1 General . . . . . . . . . . . . . . . . . . . . . .24

    105.2 Required Inspections . . . . . . . . . . .24

    105.3 Testing of Systems . . . . . . . . . . . . .25

    105.4 Connection to Service Utilities . . . .25

    106.0 Violations and Penalties . . . . . . . . .25

    106.1 General . . . . . . . . . . . . . . . . . . . . . .25

    106.2 Notices of Correction or Violation . . .25

    106.3 Penalties . . . . . . . . . . . . . . . . . . . . .26

    106.4 Stop Orders . . . . . . . . . . . . . . . . . .26

    106.5 Authority to Disconnect Utilities in Emergencies . . . . . . . . .26

    106.6 Authority to Condemn . . . . . . . . . . .26

    107.0 Board of Appeals . . . . . . . . . . . . . .26

    107.1 General . . . . . . . . . . . . . . . . . . . . . .26

    107.2 Limitations of Authority . . . . . . . . . .26

    Table 104.5 Plumbing Permit Fees . . . . . . . . . .27

    CHAPTER 2 DEFINITIONS . . . . . . . . . . . . . . . . .29

    201.0 General . . . . . . . . . . . . . . . . . . . . . .31

    201.1 Applicability . . . . . . . . . . . . . . . . . . .31

    202.0 Definition of Terms . . . . . . . . . . . . .31

    202.1 General . . . . . . . . . . . . . . . . . . . . . .31

    CHAPTER 3 GENERAL REGULATIONS . . . . . .47

  • CPC § 301.3.1 Medium 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 § 4.6 Medium relevance — show source text

    Considerations are soil density; clearance from obstacles, utilities, and structures; location of bends, and water service locations. Excavations and shoring shall be in accordance with jurisdictional safety requirements. (c) Set Up Fuse the proper length of polyethylene pipe in accordance with ASTM F2620, or ASTM D3261 and fuse the end to a small length that is attached to the pulling head. A rod pusher cable is pushed through the damaged host pipe and attached to the pulling cable, which is then drawn through the pipe. The clevis end of the cable is attached to the pulling head. The pulling equipment is then set up according to the manufacturer’s instructions.

    (d) Pulling Pull the pulling head through. Once the pull is done, complete the connection to the existing piping.

    4.6 Cleanouts

    4.6.1 Plug Each cleanout fitting for cast-iron pipe shall consist of a cast-iron or brass body and an approved plug. Each cleanout for galvanized wrought-iron, galvanized steel, copper, or brass pipe shall consist of a brass plug as specified in Table 1, or a standard weight brass cap, or an approved ABS or PVC plastic plug, or an approved stainless-steel cleanout or plug. Plugs shall have raised square heads or approved countersunk rectangular slots. 4.6.2 Approved Each cleanout fitting and each cleanout plug, or cap shall be of an approved type.

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    4.6.3 Watertight and Gastight

    Cleanouts shall be designed to be watertight and gastight.

    5 Testing and Inspection Requirements

    5.1 Media

    The piping of the building sewer shall be tested with water. 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.

    5.2 Water Test

    The system shall be tested by plugging the end of the building sewer at its points of connection to the public sewer or private sewage disposal system and completely filling the building sewer with water from the lowest to the highest point thereof.

    5.3 Inspections

    The completed piping shall be internally inspected by camera unless waived by the Administrative Authority.

    TABLE 1

    CLEANOUTS (See Section 4.6.1)

    NPS SIZE OF CLEANOUT
    (inches)
    THREADS PER INCH
    1.5 1.5 11.5


    2
    1.5 11.5


    2.5
    2.5 8

    3
    2.5 8

    4 & larger
    3.5 8

    Note: For SI units: 1 inch = 25 mm

    Uniform Plumbing Code References

    The following sections of the 2024 Uniform Plumbing Code apply.

    105.2 Required Inspections

    105.2.2 Other Inspections

    105.3 Testing of Systems

    301.2 Minimum Standards

    309.0 Workmanship

    312.0 Protection of Piping, Materials, and Structures

  • CPC § 301.0 Medium relevance — show source text

    Submeter. A meter installed subordinate to a site meter.

    Also known as a dedicated meter.

    WaterSense. A voluntary program of the U.S., Environmental Protection Agency, designed to identify and promote water-efficient products and practices. Water Closet. A fixture with a water-containing receptor that receives liquid and solid body waste and on actuation conveys the waste through an exposed integral trap into a drainage system. Also referred to as a toilet.

    L 301.0 General Regulations. L 301.1 Installation. Plumbing systems covered by this appendix shall be installed in accordance with this code, other applicable codes, and the manufacturer’s installation instructions.

    L 301.2 Qualifications. 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.

    L 302.0 Disposal of Liquid Waste.

    L 302.1 Disposal. It shall be unlawful for a person to cause, suffer, or permit the disposal of sewage, human excrement, or other liquid wastes, in a place or manner, except through and by means of an approved drainage system, installed and maintained in accordance with the provisions of this code. L 302.2 Connections to Plumbing System Required. Equipment and appliances, used to receive or discharge liquid wastes or sewage, shall be connected properly to the drainage system of the building or premises, in accordance with the requirements of this code.

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    APPENDIX L

    L 303.0 Abandonment.

    L 303.1 General. An abandoned system or part thereof covered under the scope of this appendix shall be disconnected from remaining systems, drained, plugged, and capped in an approved manner.

    L 401.0 Water Conservation and Efficiency. L 401.1 Scope. The provisions of this section establish the means of conserving potable and nonpotable water used in and around a building.

    L 402.0 Water-Conserving Plumbing Fixtures and Fittings. L 402.1 General. The maximum water consumption of fixtures and fixture fittings shall comply with the flow rates specified in Table L 402.1, and Section L 402.2 through Section L 402.10.

    TABLE L 402.1

    MAXIMUM FIXTURE AND FIXTURE FITTINGS FLOW RATES

  • CPC § 2025 Medium relevance — show source text

    Gas Piping| |13|Health Care Facilities and Medical Gas and Medical Vacuum Systems| |14|Firestop Protection| |15|Alternate Water Sources for Nonpotable Applications| |16|Nonpotable Rainwater Catchment Systems| |17|Referenced Standards| |Appendix A|Recommended Rules for Sizing the Water Supply System| |Appendix B|Explanatory Notes on Combination Waste and Vent Systems| |Appendix C|Alternate Plumbing Systems| |Appendix D|Sizing Storm Water Drainage Systems| |Appendix E|Manufactured/Mobile Home Parks and Recreational Vehicle Parks| |Appendix F|Firefighter Breathing Air Replenishment Systems| |Appendix G|Sizing of Venting Systems| |Appendix H|Private Sewage Disposal Systems| |Appendix I|Installation Standards| |Appendix J|Combination of Indoor and Outdoor Combustion and Ventilation Opening Design| |Appendix K|Potable Rainwater Catchment Systems| |Appendix L|Sustainable Practices| |Appendix M|Peak Water Demand Calculator| |Appendix N|Impact of Water Temperature on the Potential for Scalding and Legionella Growth| |Appendix O|Non-Sewered Sanitation Systems| |Appendix P|Professional Qualifications| |Appendix Q|Indoor Horticultural Facilities| |Appendix R|Tiny Houses| |Appendix S|Onsite Stormwater Treatment Systems|

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    FORMAT OF THE UNIFORM PLUMBING CODE

    The following is a summary of the scope and intent of the provisions addressed within the chapters and appendices of the Uniform Plumbing Code :

    Chapter 1 Administration.

    Chapter 1 regulates the application, enforcement, and administration of subsequent requirements of the code. As well as establishing the scope of the code, this chapter is concerned with enforcing the requirements contained in the body of the code. A plumbing code, as with any other code, is intended to be adopted as a legally enforceable document to safeguard health, safety, property, and public welfare. The code cannot be effective without satisfactory provisions for its administration and enforcement. The Authority Having Jurisdiction is to review the proposed and completed work and to decide whether a plumbing system conforms to the code requirements. As a public servant, the Authority Having Jurisdiction enforces the code in an unbiased, proper manner. The design professional is responsible for the design of a safe plumbing system. The contractor is responsible for installing the system in accordance with the plans.

    Chapter 2 Definitions.

    To maintain consistency and encourage the use of common terminology, Chapter 2 establishes definitions to provide clarity of terms and promote the use of a common language throughout the code. Understanding definitions within the context of their application enables greater collaboration, efficiency, standardization, and interpretation in applying and enforcing terms used throughout the code. Codes are technical documents, and every term can impact the meaning of the code text. Terms not defined have a normally accepted meaning.

    Chapter 3 General Regulations.

    Chapter 3 regulates the general requirements, not specific to other chapters, for installing plumbing systems. Many regulations are not specific plumbing requirements but relate to the overall plumbing system. This chapter contains safety requirements for installing plumbing and also contains nonplumbing requirements for identifying pipes, pipe fittings, traps, fixtures, materials, and devices used in plumbing systems.

  • 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.

    2 2025 CALIFORNIA PLUMBING CODE

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

    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.

Frequently asked questions

When is a plumbing permit required?

A separate plumbing permit is required before installing, altering, repairing, replacing, or remodeling a plumbing system, except for limited exempt work such as stopping leaks or clearing stoppages (see §104.1 and the exemptions listed in §104.2) .

What must be submitted with a permit application?

Applications must identify the work, site, and intended use and be accompanied by construction documents when required; those documents must be prepared by the responsible design professional unless waived by the Authority Having Jurisdiction (see §104.3 and §104.3.1) .

How long does a permit remain valid?

Permits expire where work is not commenced or is suspended/abandoned for prescribed periods; the code includes expiration rules and California time-limit provisions addressing commencement and allowable extensions (see §104.4, §104.4.3, and §104.4.3.1) .

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