DIABLO WATER DISTRICT: EPA violation history, explained

DIABLO WATER DISTRICT has no violations on record in EPA's SDWIS data. It serves 43,357 people through 13,617 service connections.

How this compares nationally

Out of 12,903 systems in this dataset, DIABLO WATER DISTRICT ranks 12,604th by violation burden (2th percentile) - 0 violations total, 0 health-baseds.

How DIABLO WATER DISTRICT compares within CA

Among the 803 CA systems in this dataset, the average is 5.8 health-based violations - DIABLO WATER DISTRICT's 0 is at or below that. The filter guide explains what a violation like this actually calls for.

What this data is and is not

Everything on this page is DIABLO WATER DISTRICT's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. Between the utility's meter and DIABLO WATER DISTRICT's customers' taps is household plumbing, invisible to a system-level record ranked 12,604th of 12,903 by violation count. The guide to what this data misses covers that gap.