Water quality in Marathon, Ohio
Marathon is in Clermont County. 9 active public water systems serve the county; 9 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Clermont County
8 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Clermont Public Water System |
133,059 | 1 | 10.3 mi | |
| Bethel Village PWS |
2,620 | 3 | 13.3 mi | |
| Milford City PWS |
6,700 | 2 | 14.5 mi | |
| Loveland City PWS |
12,800 | 1 | 16.7 mi | |
| Tate-Monroe Water Association PWS |
24,092 | 1 | 17.5 mi | |
| Robin Grays PWS |
88 | 1 | 18.7 mi | |
| New Richmond Village PWS |
2,698 | 3 | 19.4 mi | |
| Felicity Village PWS |
1,573 | 3 | 21.1 mi |
About this data
Water systems are matched to Clermont County, nearest to Marathon 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.