💧 ZIP Water Report

Tap water in Sonora, CA — ZIP 95310

1 public water system serving about 5,482 people.

A
Excellent

Water systems serving 95310

Tud - Columbia Water System
PWSID CA5510013 · serves 5,482 · surface water
0 health-based / 1 total violations (5 yrs)
A

Grades summarize EPA SDWIS violation records (last 5 years) and UCMR 5 PFAS results. They are informational, not a health determination. Methodology