Water quality for ZIP code 45204
ZIP 45204 covers Cincinnati in Hamilton County, Ohio, one of 54 ZIP codes in the county. 28 active public water systems serve the county; 15 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 Hamilton County
11 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Norwood City PWS |
19,870 | 1 | 6.5 mi | |
| Wyoming City PWS |
9,700 | 1 | 9.9 mi | |
| Reading City PWS |
9,506 | 2 | 10.3 mi | |
| Glendale Village PWS |
2,500 | 2 | 12.4 mi | |
| Cleves Village PWS |
6,000 | 2 | 12.6 mi | |
| Indian Hill City PWS |
15,000 | 0 | 13.2 mi | |
| Twin Rivers Water Corporation |
245 | 2 | 15.0 mi | |
| Harrison City PWS |
11,600 | 1 | 17.9 mi | |
| Lockland Village PWS |
3,486 | 1 | — | |
| Addyston Village PWS |
900 | 3 | — | |
| Dry Fork Pointe MHP |
230 | 1 | — |
Non-community systems in Hamilton County (16: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Trihealth Good Samaritan Hospital |
4,000 | 0 | 0 | |
|
UC Health Medical Center Scis |
558 | 0 | 0 | |
|
UC Health Ridgeway Tower |
208 | 0 | 0 | |
|
Cincinnati Childrens Med Center Col Hill |
722 | 0 | 0 | |
|
Cincinnati Childrens Hosp Ionization Sys |
1,514 | 0 | 0 | |
|
Four Seasons Marina |
615 | 0 | 0 | |
|
Taylor Creek Youth Org. PWS |
100 | 2 | 1 | |
|
Whitewater Senior Center PWS |
45 | 0 | 0 | |
|
Robins Nest Golf Course PWS |
100 | 0 | 0 | |
|
Carolaura Farm, Ltd PWS |
25 | 1 | 1 | |
|
The Root Beer Stand |
270 | 2 | 0 | |
|
Cincinnati Incorporated |
278 | 0 | 0 | |
|
Indian Hill Winter Club PWS |
200 | 1 | 0 | |
|
Whitewater Processing, LLC |
120 | 0 | 0 | |
|
Cincinnati VA Medical Center |
4,152 | 0 | 0 | |
|
Blue Bell Beach PWS |
123 | 4 | 0 |
About this data
Water systems are matched to Hamilton 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.