Water quality for ZIP code 45056
ZIP 45056 covers Oxford and Darrtown in 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
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 |
|---|---|---|---|---|
| Southwest Regional Water District |
42,856 | 0 | 5.5 mi | |
| Crouse Mobile Home Park & Sales, LLC |
247 | 4 | 10.1 mi | |
| New Miami Village PWS |
3,200 | 0 | 12.0 mi | |
| Hamilton Public Water System |
62,447 | 2 | 12.1 mi | |
| Trenton City PWS |
13,012 | 1 | 14.9 mi | |
| Fairfield City PWS |
44,907 | 0 | 15.7 mi | |
| Butler Co. Water District 2 PWS |
116,572 | 1 | 18.9 mi | |
| Catalina Mobile Home Park |
1,280 | 1 | 19.4 mi | |
| Monroe City PWS |
15,600 | 3 | 19.8 mi | |
| Middletown City PWS |
51,229 | 2 | 19.9 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 |
|---|---|---|---|---|
|
Champion Camping Club PWS |
25 | 1 | 1 | |
|
Fort Hamilton Hospital PWS |
950 | 1 | 0 | |
|
Advanced Drainage Systems Butler |
171 | 0 | 0 | |
|
AL Couch Super Market |
100 | 1 | 1 | |
|
Molson Coors USA LLC |
550 | 0 | 0 | |
|
Soul Winners Church |
75 | 2 | 1 | |
|
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, the county this ZIP code lies in, nearest to the ZIP code's centre 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.
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.