Skip to content

Chapter 15 — ALTERNATE WATER SOURCES FOR NONPOTABLE APPLICATIONS

1506.2 Plumbing Plan Submission. No permit for an

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.

on-site treated nonpotable gray water system shall be issued until complete plumbing plans, with data satisfactory to the Authority Having Jurisdiction, have been submitted and approved. [BSC-CG, HCD 1] Prior to commencing the issuance of permits for indoor gray water systems pursuant to state requirements relating to graywater, a city, county, city and county or other local agency shall seek consultation with the local public health department to ensure that local pub- lic health concerns are addressed in local standards or ordi- nances, or in issuing permits. See California Water Code Section 14877.3.

« « «

(7) The potable water system shall be flushed after

24 hours, and a standard bacteriological test shall be performed. Where test results are acceptable, the potable water system shall be permitted to be recharged. 1505.13.2.4 Periodic Inspection. Periodic visual inspections of recycled water supply systems shall be required by the recycled water supplier or designee following the procedures in Section 1505.13.2.1. Pursuant to California Code of Regu- lations, Title 22, Section 60316, annual visual inspections shall be required for recycled water sup- ply systems that are within or a part of a building. Reclaimed (Recycled) Water.1505.14 Minimum Water Quality Requirements for The minimum water qual- ity for reclaimed (recycled) water shall meet the applicable water quality requirements of California Code of Regulations,

TABLE 1505.15 MINIMUM RECLAIMED (RECYCLED) WATER SOURCE TESTING, INSPECTION, AND MAINTENANCE FREQUENCY

DESCRIPTION MINIMUM FREQUENCY*
Inspect and clean filters and screens, and replace (where neces-
sary).
 Every 3 months.
Inspect pumps and verify operation.
 After initial installation and every 12 months thereafter.

Inspect valves and verify operation.
 After initial installation and every 12 months thereafter.

Inspect pressure tanks and verify operation.
 After initial installation and every 12 months thereafter.

Clear debris from and inspect storage tanks, 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.

322 2019 CALIFORNIA PLUMBING CODE

any other purpose or distributed to any other persons or part ies. ALTERNATE WATER SOURCES FOR NONPOTABLE APPLICATIONS

Get a plain-English answer with a citation back to this text.

Ask AI about this code
Export this section
▸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. 1501.0 General.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 a…
    4. 1501.4 Component Identification. System components
    5. 1501.5 Maintenance and Inspection 1, DWR]. Alternate water sou…
    6. 1501.6 Operation and Maintenance Manual [BSC-
    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, &DWR]. Signage…
    10. 1501.10 System Controls. Controls for pumps, valves, and
    11. 1501.11 Hose Bibbs for Single-Family Dwellings [HCD1]. Hose bi…
    12. 1502.2 Supply System Inspection and Test. Alternate
    13. 1502.3 Cross-Connection Inspection and Testing. An
    14. 1502.6 Sizing. Unless otherwise provided for in this chapter, …
    15. 1503.1 General. The provisions of this section shall apply
    16. 1502.4 Separation Requirements. Underground alternate
    17. 1502.5 Abandonment. Alternate water source systems that
    18. 1503.2 System Requirements. Gray water shall be permitted to b…
    19. 1503.3 Connections to Potable and Reclaimed(Recycled) Water Sy…
    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. 1503.9 Gray Water System Components. Gray water
    25. 1504.2 Required Area of Subsurface Irrigation
    26. 1504.3 Determination of Maximum Absorption Capac-
    27. 1504.4 Groundwater Level. No excavation for an irrigation fiel…
    28. 1504.5 Irrigation, Disposal Field and Mulch Basin Con-structio…
    29. 1504.6 Reserved.
    30. 1504.7 Reserved.
    31. 1504.8 Gray Water System Color and Marking Infor-mation. Press…
    32. 1504.9 Other Collection and Distribution Systems. Other collec…
    33. 1504.10 Testing. Building drains and vents for gray water
    34. 1504.11 Maintenance. Gray water systems and components shall b…
    35. 1505.0 Recycled Water 1505.1 General. The provisions of Supply…
    36. 1505.3 System Changes. No changes or connections shall
    37. 1505.4 Connections to Potable or Reclaimed (Recy-cled) Water S…
    38. 1505.2 Permit. It shall be unlawful for a person to construct,
    39. 1505.5 Initial Cross-Connection Test. A cross-connection test …
    40. 1505.6 Recycled Water Recycled water supply system materials s…
    41. 1505.8 Valves. Valves, except fixture supply control valves,
    42. 1505.9 Hose Bibbs. Hose bibbs shall not be allowed on
    43. 1505.10 Required Appurtenances. The recycled water
    44. 1505.11 Pipe Separation in Trenches. Reclaimed (recycled) wate…
    45. 1505.12 Signage. Signs in rooms and water closet tanks in
    46. 1505.13 Inspection and Testing. Recycled water supply
    47. 1505.15 Maintenance and Inspection. Recycled water
    48. 1506.0 On-Site Treated Nonpotable Gray Water Sys-
    49. 1506.2 Plumbing Plan Submission. No permit for an
    50. 1506.3 System Changes. No changes or connections shall
    51. 1506.4 Connections to Potable or Reclaimed (Recy-
    52. 1506.5 Initial Cross-Connection Test. A cross-connection test …
    53. 1506.6 On-Site Treated Nonpotable tem Materials. On-site treat…
    54. 1506.7 On-Site Treated Nonpotable Devices and Systems. Devices…
    55. 1506.9 Design and Installation. The design and installation of…
    56. 1506.10 Valves. Valves, except fixture supply control
    57. 1506.11 Signs. Signs in buildings using on-site treated nonpot…
    58. 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 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

GoCodebook provides public access, search, citation, multilingual explanation, and practical interpretation of legally adopted building regulations. It is not a substitute for the official ICC or California code publications.