Water quality in Dayton, Ohio
Dayton is in Montgomery County. 71 active public water systems serve the county; 46 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 Montgomery County
22 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Dayton Public Water System |
141,407 | 0 | 0.8 mi | |
| Sherwood Grove MHP |
30 | 1 | 3.9 mi | |
| Oakwood City PWS |
9,572 | 0 | 4.5 mi | |
| Trotwood City PWS |
9,000 | 2 | 5.7 mi | |
| Huber Heights Public Water System |
43,439 | 1 | 6.5 mi | |
| Englewood City PWS |
13,463 | 0 | 7.9 mi | |
| Voyager Village MHP |
400 | 2 | 8.5 mi | |
| Montgomery County Water Services 1 PWS |
150,207 | 0 | 8.6 mi | |
| West Carrollton City PWS |
8,361 | 1 | 8.6 mi | |
| Jefferson Regional Water Authority |
4,813 | 1 | 8.7 mi | |
| Quarry Lakes MHP LLC |
141 | 3 | 9.1 mi | |
| Union City PWS |
7,000 | 1 | 9.6 mi | |
| Brookville Municipality PWS |
5,923 | 2 | 10.4 mi | |
| New Lebanon Village PWS |
3,770 | 1 | 10.7 mi | |
| Miamisburg City PWS |
19,790 | 1 | 11.1 mi | |
| Brookville Lake Estates |
211 | 1 | 11.9 mi | |
| Phillipsburg Village PWS |
490 | 2 | 13.5 mi | |
| Oakwood Village MHP |
1,500 | 3 | 13.6 mi | |
| Germantown City PWS |
5,547 | 1 | 14.1 mi | |
| Farmersville Village PWS |
975 | 1 | 14.1 mi | |
| Dayton VA Bldg 410 |
125 | 2 | — | |
| Dayton VA Bldg 320 Pod a |
95 | 2 | — |
Non-community systems in Montgomery County (48: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Montgomery County, nearest to Dayton 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.