Tap Water File

DIABLO WATER DISTRICT

P. O. Box 127, OAKLEY, CA, 94561 · 925-625-3798

On the EPA record

Population served
43357
Service connections
13617
System type
Community water system
Primary water source
Surface water purchased
Owner type
Local government

Drinking-water violations on record

No Safe Drinking Water Act violations appear in EPA's SDWIS record for this water system as of the date below. That is a statement about the published federal record — not a guarantee that the water is safe, and not proof that a state reported everything it holds to EPA.

Source: US Environmental Protection Agency (EPA) · EPA public water system ID (PWSID) CA0710007