1603.1 Rainwater Catchment Systems — 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) § 1603.1 · Effective January 1, 2026 · Official source: Building Standards Commission

The design and

ment or both, the collected rainwater shall be treated as

installation of nonpotable rainwater catchment systems shall

necessary to ensure the required water quality is deliv-

be in accordance with Section 1603.2 through Section 1603.20.

ered at the point of use. Where chlorine is used for dis-

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▸Contents — California Plumbing Code (Title 24, Part 5)

California Plumbing Code (Title 24, Part 5)

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