Tap water in Norwalk, CT — ZIP 06851

1 public water system serving about 40,256 people. PFAS "forever chemicals" have been detected here.

Poor

PFAS detected: at least one system serving this ZIP reported PFAS in EPA UCMR 5 testing. Levels and the 2024 federal limits are shown per system below.

Water systems serving 06851

Norwalk First Taxing District

PWSID CT1030011 · serves 40,256 · surface water

0 health-based / 1 total violations (5 yrs) · PFAS up to 11.2 ppt — above federal limit

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