Water quality in Monroe, Ohio
Monroe 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 |
|---|---|---|---|---|
| Middletown City PWS |
51,229 | 2 | 3.9 mi | |
| Trenton City PWS |
13,012 | 1 | 5.5 mi | |
| Butler Co. Water District 2 PWS |
116,572 | 1 | 5.8 mi | |
| Catalina Mobile Home Park |
1,280 | 1 | 7.4 mi | |
| New Miami Village PWS |
3,200 | 0 | 8.5 mi | |
| Crouse Mobile Home Park & Sales, LLC |
247 | 4 | 10.2 mi | |
| Hamilton Public Water System |
62,447 | 2 | 10.7 mi | |
| Fairfield City PWS |
44,907 | 0 | 12.0 mi | |
| Southwest Regional Water District |
42,856 | 0 | 14.7 mi | |
| Oxford City PWS |
24,000 | 0 | 20.4 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 |
|---|---|---|---|---|
|
Molson Coors USA LLC |
550 | 0 | 0 | |
|
Advanced Drainage Systems Butler |
171 | 0 | 0 | |
|
AL Couch Super Market |
100 | 1 | 1 | |
|
Champion Camping Club PWS |
25 | 1 | 1 | |
|
Soul Winners Church |
75 | 2 | 1 | |
|
Fort Hamilton Hospital PWS |
950 | 1 | 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 Monroe 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.