Water quality for ZIP code 45055
Butler County, Ohio, one of 14 ZIP codes in the county. 21 active public water systems serve the county; 12 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Butler County
11 systems, largest first| System | Serves | Status | Rules violated, 3 yr |
|---|---|---|---|
| Hamilton Public Water System |
62,447 | 2 | |
| Middletown City PWS |
51,229 | 2 | |
| Fairfield City PWS |
44,907 | 0 | |
| Southwest Regional Water District |
42,856 | 0 | |
| Oxford City PWS |
24,000 | 0 | |
| Monroe City PWS |
15,600 | 3 | |
| Trenton City PWS |
13,012 | 1 | |
| New Miami Village PWS |
3,200 | 0 | |
| Catalina Mobile Home Park |
1,280 | 1 | |
| Seven Mile Village PWS |
1,000 | 1 | |
| Crouse Mobile Home Park & Sales, LLC |
247 | 4 |
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 |
|---|---|---|---|---|
|
Fort Hamilton Hospital PWS |
950 | 1 | 0 | |
|
Molson Coors USA LLC |
550 | 0 | 0 | |
|
Cincinnati Childrens Hospt Liberty PWS |
313 | 0 | 0 | |
|
Advanced Drainage Systems Butler |
171 | 0 | 0 | |
|
AL Couch Super Market |
100 | 1 | 1 | |
|
Soul Winners Church |
75 | 2 | 1 | |
|
Naws Club LLC |
30 | 0 | 0 | |
|
Champion Camping Club PWS |
25 | 1 | 1 | |
|
Dollar General #16484 Seven Mile PWS |
25 | 0 | 0 |
About this data
Water systems are matched to Butler County, the county this ZIP code lies in, largest 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.
ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA 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.