Tap water in Johnstown, PA — ZIP 15904
3 public water systems serving about 79,917 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 15904
Greater Johnstown Wa Riverside
PWSID PA4110034 · serves 49,500 ·
surface water
0 health-based / 47 total violations (5 yrs)
Highland S & W Auth Beaverdam
PWSID PA4110017 · serves 22,617 ·
surface water
3 health-based / 20 total violations (5 yrs)
Conemaugh Twp Muni Auth
PWSID PA4560048 · serves 7,800 ·
surface water
0 health-based / 92 total violations (5 yrs)
· PFAS up to 13.2 ppt
Grades summarize EPA SDWIS violation records (last 5 years) and UCMR 5 PFAS results. They are informational, not a health determination. Methodology