COUNTY WATER-SYSTEM LEDGER
Ottawa, Ohio
EPA’s September 2026 export lists 5 active community water systems serving Ottawa, Ohio, with 4 current-violation flags and 0 serious-violator flags among the covered systems.
Source: EPA SDWIS system-search export · Active community systems serving 2,500+ people · Snapshot 13 Sep 2026
01 / SYSTEMS
Water systems serving Ottawa, Ohio
EPA associates 5 covered systems with Ottawa, Ohio; their reported population-served values total 39,438 and may overlap.
Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.
| Water system | Population served | Primary source | Current export status |
|---|---|---|---|
| Ottawa County Regional Water DistrictOH6205011 | 20,428 | Surface water | No current violation flagged |
| Port Clinton CityOH6203211 | 6,500 | Surface water purchased | Other current violation flag |
| Put-In-Bay VillageOH6203311 | 5,000 | Surface water | Other current violation flag |
| Oak Harbor VillageOH6202603 | 4,400 | Surface water purchased | Other current violation flag |
| Genoa VillageOH6201003 | 3,110 | Surface water purchased | Other current violation flag |
02 / SOURCE MIX
Primary water sources for Ottawa, Ohio
EPA classifies 5 systems serving Ottawa, Ohio across 2 primary-source categories; Surface water is the largest category with 2 systems.
It is the sum of each listed system's reported population served, not a census estimate. Service areas can overlap and some systems list multiple cities or counties.