Drinking Water Systems in JOHNSTOWN, Pennsylvania
8 water systems are reported for this city, with a combined service population of 85,261. The systems have 142 EPA violation records in the five-year period ending June 30, 2026.
Water Systems Serving JOHNSTOWN
GREATER JOHNSTOWN WA SALTLICK
170 served86 historical records24 recent
C
GREATER JOHNSTOWN WA RIVERSIDE
49,500 served56 historical records43 recent
C
HIGHLAND S & W AUTH BEAVERDAM
22,617 served46 historical records17 recent
D
EAST TAYLOR MUNI AUTH
3,152 served81 historical records17 recent
D
HIGHLAND S & W AUTH LLOYDELL
723 served15 historical records7 recent
C
SOUTHWESTERN CAMBRIA CNTY AUTH
4,400 served41 historical records18 recent
D
JACKSON TWP WATER AUTH
4,236 served95 historical records13 recent
D
HIGHLAND S&W AUTH NORTHERN END
463 served84 historical records3 recent
C
EPA Contaminant Categories in Historical Violation Records
Haloacetic Acids (HAA5)76 records
Public Notice57 records
Surface Water Treatment Rule50 records
Total Trihalomethanes (TTHMs)45 records
Chlorine24 records
Consumer Confidence Rule22 records
Revised Total Coliform Rule17 records
Coliform (TCR)16 records
CARBON, TOTAL14 records
Interim Enhanced Surface Water Treatment Rule11 records
Category counts aggregate historical compliance records across listed systems. They do not show current concentrations or household test results.