710.12 Grinder Pump Ejector — 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) § 710.12 · Effective January 1, 2026 · Official source: Building Standards Commission
Grinder pumps shall be permitted to be used. 710.12.1 Discharge Piping. The discharge piping shall be sized in accordance with the manufacturer’s installation instructions and shall be not less than 1 1/4 inches (32 mm) in diameter. A check valve and fullwaytype shutoff valve shall be located on the discharge line.
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