Water quality in Monongahela, Pennsylvania
Monongahela is in Washington County. 29 active public water systems serve the county; 23 had an EPA violation in the past three years.
Most likely your provider
Your location is within the outer bounds of this system's EPA service area.
Other community water systems in Washington County
8 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Bentleyville Muni Auth |
2,600 | 4 | 6.8 mi | |
| Ellsworth Boro Water Dept |
1,250 | 5 | 7.8 mi | |
| Tri Cnty JT Muni Auth |
10,100 | 7 | 10.5 mi | |
| Marianna Muni Water Works |
480 | 5 | 14.8 mi | |
| Washington Estates II MHC LLC |
373 | 4 | 18.2 mi | |
| Washington Estates MHC LLC |
358 | 3 | 18.3 mi | |
| Donegal Township |
820 | 7 | 31.5 mi | |
| South Park MHC LLC |
740 | 3 | — |
Non-community systems in Washington County (20: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Houston Sunoco |
25 | 1 | 0 | |
|
Lone Pine Community Center |
100 | 1 | 0 | |
|
Canonsburg Sportsmen Associatn |
50 | 0 | 0 | |
|
Dean's Water Service, Inc. |
25 | 1 | 0 | |
|
Bsa Camp Annawanna |
25 | 2 | 1 | |
|
Stallion Oilfield Services |
25 | 2 | 0 | |
|
Camp Agape |
50 | 0 | 0 | |
|
American Legion Post 907 |
25 | 1 | 0 | |
|
Cornerstone Care |
100 | 5 | 1 | |
|
Bullpen Rustic Lodge |
100 | 1 | 0 | |
|
Mouse Trap |
50 | 0 | 0 | |
|
Avella Area School District |
850 | 0 | 0 | |
|
Dogwood Hills Golf Course |
100 | 1 | 0 | |
|
TC USA Pipeline Services LLC |
50 | 1 | 0 | |
|
Four Seasons Resort |
100 | 2 | 0 | |
|
Lone Pine Stop #1 |
100 | 2 | 0 | |
|
Rough Cut Tavern |
50 | 0 | 0 | |
|
Culligan Store Sol of Wash CO |
25 | 0 | 0 | |
|
Glacier Water Serv Washington |
25 | 1 | 0 | |
|
West Pike Bulk Station |
25 | 1 | 0 |
About this data
Water systems are matched to Washington County, nearest to Monongahela first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 files.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Pennsylvania records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.