Tap water in St. Louis, MO — ZIP 63133

2 public water systems serving about 1,415,709 people. PFAS "forever chemicals" have been detected here.

Good

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 63133

Mo American St Louis St Charles Counties

PWSID MO6010716 · serves 1,111,000 · surface water

0 health-based / 0 total violations (5 yrs) · PFAS up to 5.1 ppt

St Louis City Pws

PWSID MO6010715 · serves 304,709 · surface water

0 health-based / 8 total violations (5 yrs)

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