Tap water in Madison, WI — ZIP 53558
2 public water systems serving about 281,676 people. PFAS "forever chemicals" have been detected here.
C
Fair
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 53558
Madison Water Utility
PWSID WI1130224 · serves 272,000 ·
groundwater
1 health-based / 2 total violations (5 yrs)
· PFAS up to 46.5 ppt
Mcfarland Waterworks
PWSID WI1130241 · serves 9,676 ·
groundwater
0 health-based / 0 total violations (5 yrs)
· PFAS up to 3.7 ppt
Grades summarize EPA SDWIS violation records (last 5 years) and UCMR 5 PFAS results. They are informational, not a health determination. Methodology