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Earlier editions: 20222019

Chapter 31B — PUBLIC POOLS

3130B Diatomaceous Earth Filters — 2025 California Building Code

California Building Code (Title 24, Part 2) · 2025 edition · updated 2026-10-19 · 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 Building Code (Title 24, Part 2) § 3130B · Effective January 1, 2026 · Official source: Building Standards Commission

In addition to the requirements for all filters as indicated in Section 3128B, the following applies to diatomaceous earth filters.

3130B.1 Flow rates.

The filtration rate for both pressure and vacuum diatomaceous earth filters shall not exceed 2 gallons per minute per square foot (81.49 L/m per m [2] ) of filter area.

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▸Contents — California Building Code (Title 24, Part 2)
California Building Code (Title 24, Part 2)

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