Tap water in Williamsport, PA — ZIP 17754
2 public water systems serving about 55,983 people. PFAS "forever chemicals" have been detected here.
F
Failing
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 17754
Williamsport Mun Water Auth
PWSID PA4410173 · serves 51,000 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 9.7 ppt — above federal limit
Montoursville Water Company
PWSID PA4410175 · serves 4,983 ·
groundwater
0 health-based / 12 total violations (5 yrs)
· PFAS up to 12.1 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