Chapter 15 — ALTERNATE WATER SOURCES FOR NONPOTABLE APPLICATIONS
1501.6 Operation and Maintenance Manual — 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) § 1501.6 · Effective January 1, 2026 · Official source: Building Standards Commission
[BSC- CG, HCD 1 & DWR] An operation and maintenance manual for gray water, on-site treated nonpotable water , [DWR] and recycled water supply systems required to have a permit in accordance with Section 1501.3, Section 1505.2, and Section 1506.2 shall be supplied to the building owner by the system designer or installer . The operation and maintenance manual shall include the following:
(1) Diagram(s) of the entire system and the location of system components.
(2) Instructions for operating and maintaining the system.
(3) Instructions on maintaining the required water quality for on-site treated nonpotable water systems.
(4) Details on startup, shutdown, and deactivating the system for maintenance, repair, or other purposes.
(5) Applicable testing, inspection, and maintenance frequencies in accordance with Section 1501.5 [DWR] or Section 1505.16 as applicable .
(6) A method of contacting the installer and/or manufacturer(s).
(7) Directions to the owner or occupant that the manual shall remain with the building throughout the life cycle of the structure.
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