💧 ZIP Water Report

Tap water in Mattawa, WA — ZIP 99349

1 public water system serving about 5,370 people.

B
Good

Water systems serving 99349

Mattawa City Of
PWSID WA5352000 · serves 5,370 · groundwater
1 health-based / 2 total violations (5 yrs)
B

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