Pennsylvania Water Quality
Health violation data for 1,787 community water systems in Pennsylvania. Based on EPA Safe Drinking Water Information System (SDWIS) data.
Water Systems
1,787
Total Violations
5,198
Systems with Violations
50
Cities with Issues
472
Water Systems with Most Violations
| # | Water System | Violations | Health |
|---|---|---|---|
| 1 | PARKER AREA WATER AUTH Parker | 148 | Yes |
| 2 | EAST TAYLOR MUNI AUTH Johnstown | 126 | Yes |
| 3 | PITHOLE WATER ASSOCIATION Cyclone | 111 | Yes |
| 4 | ICMSA ROSSITER Indiana | 109 | Yes |
| 5 | JACKSON TWP WATER AUTH Mineral Point | 108 | Yes |
| 6 | CENTERVILLE MUNI WATER AUTH Bedford | 95 | Yes |
| 7 | TRI CNTY JT MUNI AUTH Fredericktown | 88 | Yes |
| 8 | ICMSA ARCADIA Indiana | 87 | Yes |
| 9 | BLAWNOX BORO WATER DEPT Pittsburgh | 75 | Yes |
| 10 | EBENSBURG BORO MUNI AUTH Ebensburg | 62 | Yes |
| 11 | ICMSA CHERRYTREE Indiana | 59 | Yes |
| 12 | BRAVE WATER AUTH Brave | 58 | Yes |
| 13 | AQUA PA CLARENDON Sharon | 52 | Yes |
| 14 | NELSON TOWNSHIP AUTHORITY Nelson | 50 | Yes |
| 15 | MIDLAND BORO MUNI AUTH Midland | 47 | Yes |
| 16 | WESTOVER MUNICIPAL AUTHORITY Westover | 46 | Yes |
| 17 | SOUTHWEST WARREN CO MUN AUTH Tidioute | 42 | Yes |
| 18 | WEST CARROLL W AUTH BAKERTON Elmora | 39 | Yes |
| 19 | POLK CENTER Polk | 38 | Yes |
| 20 | ALBERT GALLATIN MUNI AUTH Point Marion | 37 | Yes |
| 21 | BLACKLICK VALLEY MUNI AUTH Twin Rocks | 36 | Yes |
| 22 | FALLS CREEK BORO MUN AUTH Falls Creek | 36 | Yes |
| 23 | PINECREST VILLAGE MHP Havertown | 35 | Yes |
| 24 | FREEBURG MUNICIPAL AUTHORITY Freeburg | 34 | Yes |
| 25 | POINT MARION BORO Point Marion | 34 | Yes |
| 26 | CONFLUENCE BORO MUNI AUTH Confluence | 33 | Yes |
| 27 | RBE WATER ASSOCIATION INC Roaring Brook Twp | 30 | Yes |
| 28 | JOHNSONBURG MUNICIPAL AUTH Johnsonburg | 30 | Yes |
| 29 | STATE LINE MUNI SVCS AUTH Point Marion | 28 | Yes |
| 30 | LAUREL WOODS MOBILE HOME PARK Dingmans Ferry | 27 | Yes |
| 31 | SALEM HEIGHTS ESTATE Lake Ariel | 27 | Yes |
| 32 | PINEDALE MOBILE HOME PARK Adamsville | 26 | Yes |
| 33 | VILLAGE OF MTN HEIGHTS MHP Milton | 25 | Yes |
| 34 | CLARENDON ACRES WATER CO Tunkhannock | 24 | Yes |
| 35 | PA AMERICAN DILLINER SYSTEM Dilliner | 24 | Yes |
| 36 | PA AMERICAN WATER STEELTON Hummelstown | 23 | Yes |
| 37 | DOVER BORO WATER SYS Dover | 23 | Yes |
| 38 | VICTORIA VILLAGE TOWNHOUSE Brodheadsville | 22 | Yes |
| 39 | COBBS LAKE PRESERVE Lake Ariel | 22 | Yes |
| 40 | LYKENS BORO AUTH Lykens | 22 | Yes |
| 41 | MORRISVILLE MUNIC AUTHORITY Morrisville | 21 | Yes |
| 42 | LAKE OF THE PINES East Stroudsburg | 21 | Yes |
| 43 | TAMAQUA AREA WATER AUTHORITY Tamaqua | 21 | Yes |
| 44 | NANTY GLO WATER AUTH Nanty Glo | 21 | Yes |
| 45 | BCWSA MAIN LOWER SOUTH Warrington | 20 | Yes |
| 46 | BRINTON MANOR Glen Mills | 20 | Yes |
| 47 | BIRDSBORO MUNI WATER AUTH Birdsboro | 20 | Yes |
| 48 | WESTERN CLINTON CO MUN AUTH Renovo | 20 | Yes |
| 49 | ROTE MUTUAL WATER ASSOCIATION Mill Hall | 20 | Yes |
| 50 | SHIPPINGPORT BORO WATER SYS Shippingport | 20 | Yes |
Most Common Contaminants in Pennsylvania
| Contaminant | Violations | Systems Affected |
|---|---|---|
| Fluoride | 1,777 | 439 |
| Haloacetic Acids (HAA5) | 1,205 | 57 |
| Total Trihalomethanes (TTHM) | 597 | 62 |
| E. coli | 473 | 153 |
| Arsenic | 302 | 74 |
| Chloroform | 168 | 39 |
| Combined Radium 226/228 | 146 | 106 |
| Barium | 120 | 15 |
| Turbidity | 85 | 23 |
| Nitrate | 73 | 20 |
| Atrazine | 68 | 11 |
| Copper | 55 | 5 |
| Lead & Copper Rule | 33 | 5 |
| Benzene | 19 | 4 |
| Total Coliform (RTCR) | 16 | 13 |
Cities with Water Quality Issues
Aliquippa Ambridge Belle Vernon Brackenridge Charleroi Harwick Leetsdale Midland Monaca Natrona Heights Oakdale Rochester Shippingport Braddock Duquesne Monroeville Pittsburgh Brave Mount Morris Somerset Alum Bank Bedford Meyersdale Greensburg Latrobe Indiana Blairsville Shelocta Dubois Emporium Falls Creek Johnsonburg Kersey Reynoldsville Ridgway Saint Marys Sykesville Johnstown Colver Ebensburg +432 more
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About This Data
Water quality data is from the EPA Safe Drinking Water Information System (SDWIS). Health-based violations include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations. Only community water systems (CWS) in Pennsylvania are included.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.