Tap water in Ann Arbor, MI — ZIP 48103
4 public water systems serving about 157,701 people. PFAS "forever chemicals" have been detected here.
B
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 48103
Ann Arbor
PWSID MI0000220 · serves 123,851 ·
surface water
0 health-based / 1 total violations (5 yrs)
· PFAS up to 6.1 ppt
Pittsfield Township
PWSID MI0005360 · serves 24,500 ·
surface water
0 health-based / 4 total violations (5 yrs)
Scio Township
PWSID MI0005977 · serves 8,500 ·
surface water
0 health-based / 3 total violations (5 yrs)
· PFAS up to 4.9 ppt
Kohala Ranch Water Co.
PWSID HI0000151 · serves 850 ·
groundwater
0 health-based / 0 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