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Chapter 15 — ALTERNATE WATER SOURCES FOR NONPOTABLE APPLICATIONS

1505.8 Valves. Valves, except fixture supply control valves,

California Plumbing Code (Title 24, Part 5) · 2022 edition · updated 2026-09-10 · California

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

shall be equipped with a locking feature.

1505.8.1 Valve Seals. The master reclaimed (recycled) water shut-off valve and/or the reclaimed (recycled) water meter curb cock and each valve within a wall shall be sealed after the recycled water supply system has been approved and placed into operation. These seals shall be either crimped lead wire seal or plastic break away seal which, if broken after system approval, shall be deemed conclusive evidence that the recycled water supply sys- tem has been accessed. The seals shall be purple, num- bered, and contain the words “RECYCLED WATER”, and shall be supplied by the recycled water purveyor, or by other arrangements acceptable to the Authority Hav- ing Jurisdiction.

1505.8.2 Valve and Appurtenance Access Door Signs. Each reclaimed (recycled) water valve within a wall shall have its access door into the wall equipped with a warning sign approximately 6 inches by 6 inches (152 mm x 152 mm) with wording in approximately 3/8 inch (9.5 mm) letters on a purple background. The word- ing text and format of the sign shall be substantially the same as that specified in Section 1505.12.3. The signs shall be attached inside the access door frame and shall hang in the center of the access door frame. This sign requirement shall be applicable to any and all access doors, hatches, etc., leading to reclaimed (recycled) water piping and appurtenances.

2022 CALIFORNIA PLUMBING CODE 313

ALTERNATE WATER SOURCES FOR NONPOTABLE APPLICATIONS

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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
  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
    Overview
    1. 1501.1 Applicability [BSC-CG, DWR & HCD 1] . The
    2. 1501.2 System Design. Alternate water source systems
    3. 1501.3 Permit [BSC-CG, HCD 1, DWR] . It shall be unlawful for …
    4. 1501.4 Component Identification. System components
    5. 1501.5 Maintenance and Inspection [BSC-CG, HCD
    6. 1501.6 Operation and Maintenance Manual [BSC-CG,
    7. 1501.7 Minimum Water Quality Requirements [BSC-
    8. 1501.8 Material Compatibility. Alternate water source systems …
    9. 1501.9 Signage [BSC-CG, HCD 1, HCD 2, HCD 1-AC].
    10. 1501.10 System Controls. Controls for pumps, valves, and
    11. 1502.1 General. Alternate water source systems shall be
    12. 1502.2 Supply System Inspection and Test. Alternate
    13. 1502.3 Cross-Connection Inspection and Testing. An
    14. 1502.4 Separation Requirements. Underground alternate water so…
    15. 1502.5 Abandonment. Alternate water source systems that
    16. 1502.6 Sizing. Unless otherwise provided for in this chapter, …
    17. 1503.1 General. The provisions of this section shall apply
    18. 1503.2 System Requirements. Gray water shall be permitted to b…
    19. 1503.3 Connections to Potable and Reclaimed (Recy-
    20. 1503.4 Location. No gray water system or part thereof shall
    21. 1503.5 Plot Plan Submission. No permit for a gray water
    22. 1503.6 Prohibited Location. Where there is insufficient
    23. 1503.7 Drawings and Specifications. The Authority
    24. 1503.8 Procedure for Estimating Gray Water Dis-
    25. 1503.9 Gray Water System Components. Gray water
    26. 1504.1 General. Irrigation or disposal fields shall be permitt…
    27. 1504.3 Determination of Maximum Absorption
    28. 1504.4 Groundwater Level. No excavation for an irrigation fiel…
    29. 1504.2 Required Area of Subsurface Irrigation
    30. 1504.5 Irrigation, Disposal Field and Mulch Basin Con-
    31. 1504.6 Reserved.
    32. 1504.7 Reserved .
    33. 1504.8 Gray Water System Color and Marking Infor-
    34. 1504.9 Other Collection and Distribution Systems.
    35. 1504.10 Testing. Building drains and vents for gray water
    36. 1504.11 Maintenance. Gray water systems and components shall b…
    37. 1505.1 General. The provisions of Section 1505.0 through
    38. 1505.2 Permit. It shall be unlawful for a person to construct,
    39. 1505.3 System Changes. No changes or connections shall
    40. 1505.4 Connections to Potable or Recycled Water
    41. 1505.5 Initial Cross-Connection Test. A cross-connection test …
    42. 1505.6 Recycled Water Supply System Materials.
    43. 1505.7 Recycled Water Supply System Color and
    44. 1505.8 Valves. Valves, except fixture supply control valves,
    45. 1505.9 Hose Bibbs. Hose bibbs shall not be allowed on
    46. 1505.10 Required Appurtenances. The recycled water
    47. 1505.11 Pipe Separation in Trenches . Reclaimed (recycled) wat…
    48. 1505.12 Signage . Signs in rooms and water closet tanks in
    49. 1505.13 Inspection and Testing. Recycled water supply
    50. 1505.14 Minimum Water Quality Requirements for
    51. 1505.15 Maintenance and Inspection. Recycled water
    52. 1506.1 General. The provisions of this section shall apply
    53. 1506.2 Plumbing Plan Submission. No permit for an
    54. 1506.3 System Changes. No changes or connections shall
    55. 1506.4 Connections to Potable or Recycled Water
    56. 1506.5 Initial Cross-Connection Test. A cross-connection test …
    57. 1506.6 On-Site Treated Nonpotable Gray Water Sys-
    58. 1506.7 On-Site Treated Nonpotable Gray Water
    59. 1506.8 On-Site Treated Nonpotable Gray Water Sys-
    60. 1506.9 Design and Installation. The design and installation of…
    61. 1506.10 Valves. Valves, except fixture supply control
    62. 1506.11 Signs. Signs in buildings using on-site treated nonpot…
    63. 1506.12 Inspection and Testing. On-site treated nonpotable gra…
  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 STANDARDS
  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
  31. Appendix N — IMPACT OF WATER TEMPERATURE ON THE POTENTIAL FOR …

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