407.3 Limitation of Hot Water Temperature for Public Lavatories — 2025 California Plumbing Code

California Plumbing Code (Title 24, Part 5) · 2025 edition · updated 2026-09-25 · California

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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) § 407.3 · Effective January 1, 2026 · Official source: Building Standards Commission

Lavatories. Hot water delivered from public-use lavatories shall be limited to a maximum temperature of 120°F (49°C). The maximum temperature shall be regulated by one of the following means:

(1) A limiting device conforming to either ASSE 1070/ASME A112.1070/CSA B125.70, or

(2) A water heater conforming to ASSE 1084.

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California Plumbing Code (Title 24, Part 5)

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