Tap water in Yarmouth, ME — ZIP 04021
2 public water systems serving about 143,068 people. PFAS "forever chemicals" have been detected here.
D
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 04021
Portland Water District-Greater
PWSID ME0091300 · serves 135,068 ·
surface water
0 health-based / 4 total violations (5 yrs)
Yarmouth Water District
PWSID ME0091670 · serves 8,000 ·
groundwater
0 health-based / 3 total violations (5 yrs)
· PFAS up to 9.8 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