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

California Plumbing Code (Title 24, Part 5) · 2025 edition · updated 2026-10-23 · 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) § 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.

Explained in plain English

Guides that cite this section.

Lavatory application, water consumption, and hot‑water limitations

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)

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.