Water Supply & DistributionQuestion 53 of 360
Where must a readily accessible full-open shutoff valve be provided on the building water supply?
a.On the water supply pipe to the building, so the entire supply can be shut off
b.Only at the water heater
c.Nowhere; a curb stop at the street is sufficient
d.Only at the farthest fixture
Explanation
A readily accessible full-open control valve is required on the building supply so the whole building can be isolated for repairs. A valve only at the water heater or only at the farthest fixture does not isolate the building, and relying solely on the street curb stop does not meet the on-premises shutoff requirement.
Law Reference: 2022 California Plumbing Code (CPC) §606.2Practice all 360 questions free — no signup required.
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