Chapter 6 — WATER SUPPLY AND DISTRIBUTION
610.7 Conditions for Using Table 610.4.
California Plumbing Code (Title 24, Part 5) · 2022 edition · updated 2026-09-12 · California
CBSC: official editions, supplements and errata
Italicized text is a California amendment to the model code, as printed in the official publication.
On a proposed water piping installation sized using Table 610.4, the following conditions shall be determined: (1) Total number of fixture units as determined from Table
610.3, Equivalent Fixture Units, for the fixtures to be installed. (2) Developed length of supply pipe from meter to the most
remote outlet. (3) Difference in elevation between the meter or other source
of supply and the highest fixture or outlet. (4) Pressure in the street main or another source of supply
at the locality where the installation is to be made. (5) In localities where there is a fluctuation of pressure in
the main throughout the day, the water piping system shall be designed on the basis of the minimum pressure available.
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