Chapter 15 — ALTERNATE WATER SOURCES FOR NONPOTABLE APPLICATIONS
1506.10 Design and Installation — 2025 California Plumbing Code
California Plumbing Code (Title 24, Part 5) · 2025 edition · updated 2026-09-25 · California
CBSC: official editions, supplements and errata
Italicized text is a California amendment to the model code, as printed in the official publication.
Cite as: 2025 California Plumbing Code (Title 24, Part 5) § 1506.10 · Effective January 1, 2026 · Official source: Building Standards Commission
The design and installation of on-site treated nonpotable gray water systems shall be in accordance with Section 1506.10.1 through Section 1506.10.6 .
1506.10.1 Listing Terms and Installation Instruc- tions. On-site treated nonpotable gray water systems shall be installed in accordance with the terms of its listing and the manufacturer’s installation instructions. 1506.10.2 Minimum Water Quality. [BSC-CG & HCD 1] On-site treated nonpotable gray water supplied to toilets or urinals or for other uses in which it is sprayed or exposed shall be disinfected. Acceptable disinfection methods shall include chlorination, ultraviolet sterilization, ozone, or other methods as approved by the Authority Having Jurisdiction. The minimum water quality for on-site treated nonpotable gray water systems shall meet the applicable water quality requirements for the intended applications as determined by the public health Authority Having Jurisdiction. In the absence of local water quality requirements for on-site treated nonpotable gray water, the requirements of IAPMO IGC 324 or NSF/ANSI 350 shall apply.
324 2025 CALIFORNIA PLUMBING CODE
CALIFORNIA PLUMBING CODE – MATRIX ADOPTION TABLE
Get a plain-English answer with a citation back to this text.
Ask AI about this code