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Chapter 8 — INDIRECT WASTES

811.0 Chemical Wastes.811.1 Pretreatment. Chemical or liquid industrial wastes

California Plumbing Code (Title 24, Part 5) · 2019 edition · updated 2026-09-10 · California

Italicized text is a California amendment to the model code, as printed in the official publication.

that are likely to damage or increase maintenance costs on the sanitary sewer system, detrimentally affect sewage treatment or contaminate surface or subsurface waters shall be pretreated to render them innocuous before discharge into a drainage system. Detailed construction documents of the pretreatment facilities shall be required by the Authority Having Jurisdiction.

Piping conveying industrial, chemical, or process wastes from their point of origin to sewer-connected pretreatment facilities shall be of such material and design as to adequately perform its intended function to the satisfaction of the Authority Having Jurisdiction. Drainage discharge piping from pretreatment facilities or interceptors shall be in accordance with standard drainage installation procedures.

Copper or copper alloy tube shall not be used for chemical or industrial wastes as defined in this section.

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▸Contents — California Plumbing Code (Title 24, Part 5)
California Plumbing Code (Title 24, Part 5)
  1. Chapter 1 — GENERAL CODE PROVISIONS
  2. Chapter 2 — DEFINITIONS
  3. Chapter 3 — GENERAL REGULATIONS
  4. Chapter 4 — PLUMBING FIXTURES AND FIXTURE FITTINGS
  5. Chapter 5 — WATER HEATERS
  6. Chapter 6 — WATER SUPPLY AND DISTRIBUTION
  7. Chapter 7 — SANITARY DRAINAGE
  8. ▸Chapter 8 — INDIRECT WASTES
    Overview
    1. 801.2 Air Gap or Air Break Required. Indirect waste piping sha…
    2. 801.3 Food and Beverage Handling Establishments. Establishment…
    3. 801.4 Bar and Fountain Sink Traps. Where the sink in a
    4. 801.5 Connections from Water Distribution System. Indirect was…
    5. 801.6 Sterilizers. Lines, devices, or apparatus such as stills,
    6. 801.7 Drip or Drainage Outlets. Appliances, devices, or
    7. 803.2 Copper and Copper Alloys. Joints and connections in copp…
    8. 803.3 Pipe Size and Length. Except as hereinafter provided, th…
    9. 804.0 Indirect Waste Receptors.804.1 Standpipe Receptors. Plum…
    10. 805.0 Pressure Drainage Connections.805.1 General. Indirect wa…
    11. 807.2 Undiluted Condensate Waste. Where undiluted
    12. 808.0 Cooling Water.808.1 General. Where permitted by the Auth…
    13. 810.0 Steam and Hot Water Drainage Condensers
    14. 807.3 Domestic Dishwashing Machine. No domestic
    15. 810.2 Sumps, Condensers, and Intercepting Tanks. Sumps, conden…
    16. 810.3 Cleaning. Sumps and condensers shall be provided
    17. 810.4 Strainers. An indirect waste interceptor is receiving
    18. 811.0 Chemical Wastes.811.1 Pretreatment. Chemical or liquid i…
    19. 811.2 Waste and Vent Pipes. Each waste pipe receiving or
    20. 811.3 Joining Materials. Joining materials shall be of
    21. 811.4 Access. Where practicable, the piping shall be readily a…
    22. 811.5 Permanent Record. The owner shall make and keep
    23. 811.6 Chemical Vent. No chemical vent shall intersect
    24. 811.7 Discharge. Chemical wastes shall be discharged in a
    25. 811.8 Diluted Chemicals. The provisions of this section
    26. 814.0 Condensate Waste and Control.814.1 Condensate Disposal. …
    27. 814.2 Condensate Control. Where an equipment or appliance is i…
    28. 814.3 Condensate Waste Pipe Material and Sizing. Condensate wa…
    29. 814.4 Appliance Condensate Drains. Condensate drain
    30. 814.5 Point of Discharge. Air-conditioning condensate
    31. 814.6 Condensate Waste from Air-Conditioning
    32. 814.7 Plastic Fittings. Female plastic screwed fittings shall
  9. Chapter 9 — VENTS
  10. Chapter 10 — TRAPS AND INTERCEPTORS
  11. Chapter 11 — STORM DRAINAGE
  12. Chapter 12 — FUEL GAS PIPING
  13. Chapter 13 — HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICA…
  14. Chapter 14 — FIRESTOP PROTECTION
  15. Chapter 15 — ALTERNATE WATER SOURCES FOR NONPOTABLE APPLICATIONS
  16. Chapter 16 — NONPOTABLE RAINWATER CATCHMENT SYSTEMS
  17. Chapter 17 — REFERENCED STANDARDS
  18. Appendix A — RECOMMENDED RULES FOR SIZING THE WATER SUPPLY SYS…
  19. Appendix B — EXPLANATORY NOTES ON COMBINATION WASTE AND VENT S…
  20. Appendix C — ALTERNATE PLUMBING SYSTEMS
  21. Appendix D — SIZING STORM WATER DRAINAGE SYSTEMS
  22. Appendix E — MANUFACTURED/MOBILE HOME PARKS AND RECREATIONAL V…
  23. Appendix F — FIREFIGHTER BREATHING AIR REPLENISHMENT SYSTEMS
  24. Appendix G — SIZING OF VENTING SYSTEMS
  25. Appendix H — PRIVATE SEWAGE DISPOSAL SYSTEMS
  26. Appendix I — INSTALLATION STANDARD FOR PEX TUBING SYSTEMS FOR …
  27. Appendix J — COMBINATION OF INDOOR AND OUTDOOR COMBUSTION AND …
  28. Appendix K — POTABLE RAINWATER CATCHMENT SYSTEMS
  29. Appendix L — SUSTAINABLE PRACTICES
  30. Appendix M — PEAK WATER DEMAND CALCULATOR

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