Ohio
Warren County drinking water quality
19 active public water systems serve 245,488 people in Warren County. 3 are compliant, 16 had at least one EPA violation in the past three years, 3 are designated serious violators, and 2 carry a health flag.
Needs attention
Community water systems
16 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Warren County |
99,000 | 1 | 1 | |
|
Western Water Company |
39,508 | 1 | 1 | |
|
Lebanon City |
20,700 | 0 | 0 | |
|
Springboro PWS |
19,263 | 1 | 0 | |
|
Franklin Public Water System |
11,690 | 1 | 0 | |
|
South Lebanon City PWS |
7,792 | 3 | 0 | |
|
Waynesville Village PWS |
4,100 | 2 | 0 | |
|
Lebanon Correctional Institution |
3,410 | 1 | 1 | |
|
Morrow Village PWS |
3,360 | 2 | 2 | |
|
Carlisle City PWS |
1,675 | 1 | 1 | |
|
Otterbein-Lebanon Retreat Center |
1,541 | 3 | 2 | |
|
Warren Co. Pennyroyal Area PWS |
950 | 1 | 1 | |
|
South Lebanon PWS NO 2 |
180 | 0 | 0 | |
|
Wayne MHP LP |
175 | 3 | 2 | |
|
Warren Co. Sharts Road PWS |
145 | 1 | 1 | |
|
Caesars Village MHP PWS |
90 | 3 | 1 |
Non-community systems (3: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Kings Island PWS |
31,753 | 2 | 0 | |
|
Cookies Market |
100 | 2 | 1 | |
|
Cedar Oaks Wellness Center |
56 | 0 | 0 |
Inactive systems (105, no longer operating or reporting)
Kept for the record and excluded from the county totals above. Browse inactive systems.
About this data
Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.
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.