Chapter 4 — PLUMBING FIXTURES AND FIXTURE FITTINGS
404.2 Overflows — 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) § 404.2 · Effective January 1, 2026 · Official source: Building Standards Commission
Where a fixture is provided with an overflow, the overflow shall comply with Section 404.2.1 or Section 404.2.2.
404.2.1 Sinks, Lavatories, and Bathtubs. The waste shall be so arranged that the standing water in the fixture shall not rise in the overflow where the stopper is closed or remain in the overflow where the fixture is empty. The overflow pipe from a fixture shall be connected to the house or inlet side of the fixture trap.
404.2.2 Water Closets and Urinals. Overflows on flush tanks shall be permitted to discharge into the water closets or urinals served by them.
Get a plain-English answer with a citation back to this text.
Ask AI about this code