Water quality in Lake Seneca, Ohio
Lake Seneca is in Williams County. 44 active public water systems serve the county; 22 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 Williams County
12 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Pioneer Village |
1,449 | 2 | 5.6 mi | |
| Edon Village |
783 | 1 | 9.9 mi | |
| Williams Co/hillside Country Living |
225 | 2 | 10.4 mi | |
| Oakwood MHP |
180 | 0 | 11.7 mi | |
| West Unity Village |
1,760 | 2 | 12.4 mi | |
| Aqua Ohio Norlick |
345 | 1 | 12.8 mi | |
| North Pine Estates |
50 | 2 | 12.8 mi | |
| Northland Senior Community |
50 | 2 | 13.2 mi | |
| Bryan City PWS |
8,729 | 1 | 14.5 mi | |
| Edgerton Village |
1,881 | 1 | 15.9 mi | |
| Stryker Village |
1,259 | 1 | 16.4 mi | |
| Montpelier Village |
4,280 | 2 | 21.2 mi |
Non-community systems in Williams County (31: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Williams County, nearest to Lake Seneca 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 Ohio 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.