💧 ZIP Water Report

Tap water in Napa, CA — ZIP 94559

1 public water system serving about 84,804 people.

A
Excellent

Water systems serving 94559

Napa, City Of
PWSID CA2810003 · serves 84,804 · surface water
0 health-based / 0 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