Water quality in Fairfield, Ohio
Fairfield is in Butler County. 21 active public water systems serve the county; 12 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 Butler County
11 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Hamilton Public Water System |
62,447 | 2 | 4.2 mi | |
| Butler Co. Water District 2 PWS |
116,572 | 1 | 7.0 mi | |
| New Miami Village PWS |
3,200 | 0 | 7.4 mi | |
| Crouse Mobile Home Park & Sales, LLC |
247 | 4 | 10.8 mi | |
| Trenton City PWS |
13,012 | 1 | 10.9 mi | |
| Southwest Regional Water District |
42,856 | 0 | 11.0 mi | |
| Monroe City PWS |
15,600 | 3 | 11.9 mi | |
| Middletown City PWS |
51,229 | 2 | 15.0 mi | |
| Oxford City PWS |
24,000 | 0 | 16.3 mi | |
| Catalina Mobile Home Park |
1,280 | 1 | 17.3 mi | |
| Seven Mile Village PWS |
1,000 | 1 | — |
Non-community systems in Butler County (9: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Soul Winners Church |
75 | 2 | 1 | |
|
Fort Hamilton Hospital PWS |
950 | 1 | 0 | |
|
AL Couch Super Market |
100 | 1 | 1 | |
|
Advanced Drainage Systems Butler |
171 | 0 | 0 | |
|
Champion Camping Club PWS |
25 | 1 | 1 | |
|
Molson Coors USA LLC |
550 | 0 | 0 | |
|
Cincinnati Childrens Hospt Liberty PWS |
313 | 0 | 0 | |
|
Naws Club LLC |
30 | 0 | 0 | |
|
Dollar General #16484 Seven Mile PWS |
25 | 0 | 0 |
About this data
Water systems are matched to Butler County, nearest to Fairfield 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.