Water system
Ottawa County Regional Water District
EPA ID OH6205011 · Ottawa County · 20,428 people served · owned by a local government
Ottawa County Regional Water District treats its own water from Lake Erie.
The system's record
- Water bodies
- Lake Erie
- Raw intakes
- Lake Erie
- Serves
- 20,428 people · Ottawa County
- EPA ID
- OH6205011
Own surface water intake directly from Lake Erie (Ottawa County Regional Water District supplies water to other systems in the area, e.g. Put-in-Bay via pipeline/ferry and Carroll Twp).
About this area's water
What it costs
$4.99 per 1,000 gallons
Typical household bill about $24 a month for water.
Retail schedule effective January 2023. A standard residential 5/8-inch to 3/4-inch meter carries a $24.00 monthly minimum that includes the first 4,500 gallons; because typical…
Water quality & impurities
EPA compliance record
Lead at the tap: 90th-percentile result 0 ppb in 2025 (action level 15 ppb).
EPA record: no health-based violations since 2015.
1 violation of any kind logged since 2020, 1 of them paperwork (monitoring, reporting, public notice or consumer report).
Projects & plans3
Recent and current work
- Ottawa County Regional Water Treatment Plant construction · $23 million · 1999 · completed
Original 6 MGD plant. Approximately $23 million in total construction cost, funded through special assessments, state and federal grants and various… - 3 MGD plant expansion to 9 MGD · $3.7 million · 2002 · completed
Triggered after the system exceeded peak design capacity on a single hot summer day. - Lead service line inventory · 2024 · completed
The county reports its distribution system has no lead, no galvanized-requiring-replacement and no lead-status-unknown service lines, determined from…
Sewers
Sanitary
The same county department runs the sanitary side. It operates two wastewater treatment facilities - Danbury Township at 3.8 million gallons per day and Portage/Catawba Island at 1.34 MGD - along with roughly 167 miles of sanitary sewer, 83 pump stations and over 1,000 grinder pump stations. The department employs 39 full-time staff…
Storm
Not published. No county storm sewer system, stormwater utility or stormwater fee was found for the water district's service area in the sources reviewed.
Source: co.ottawa.oh.usco.ottawa.oh.us
Sourcesverified
Compiled from the utility's own reports and public records, then independently re-checked against primary sources.
Main supplier in 1 ZIP code
Serves
Main water supplier in 1 ZIP code
- 43439 · Erie Township and Lacarne100% of residents
Also present in 3 more ZIP codes
- 43452 · Port Clinton30% of residents
- 43440 · Danbury Township and Lakeside Marblehead19% of residents
- 43449 · Oak Harbor7% of residents
Population-weighted resident shares; a ZIP code can have more than one system on record. Recomputed from each ZIP's own system list, not from the map's cached footprint.
Buys from · Sells to
Ottawa County Regional Water District does not buy water from another system on record; it treats its own source water.
4 systems on record buy water from Ottawa County Regional Water District: Elmore Village, Marblehead Village, Oak Harbor Village, Port Clinton City.
Photograph
On the map
Show this system's territory on the map — 4 ZIP codes in all.
Sources
U.S. EPA SDWIS and Community Water System Service Area Boundaries (v3, 2026), Ohio EPA primacy data, 2020 census blocks: the system serving most residents, traced through purchases to the treating utility; Ohio EPA 2023 Sewer and Water Rate Survey (Ohio State, May 2025) for household bills; Ohio EPA DEFA loan awards since 2016 for the loans paragraph · EPA SDWIS · EPA service area boundaries · Ohio EPA drinking water · Ohio EPA rate survey
Ottawa County Regional Water District's own pages: dam.assets.ohio.gov
Notable facts: co.ottawa.oh.us, co.ottawa.oh.us, co.ottawa.oh.us, 13abc.com
History: co.ottawa.oh.us, co.ottawa.oh.us, co.ottawa.oh.us, co.ottawa.oh.us
Water quality: co.ottawa.oh.us, co.ottawa.oh.us
Water pressure: co.ottawa.oh.us
Capital projects: co.ottawa.oh.us, co.ottawa.oh.us, co.ottawa.oh.us
Rates: co.ottawa.oh.us, co.ottawa.oh.us, co.ottawa.oh.us
Sewers: co.ottawa.oh.us, co.ottawa.oh.us
Treatment: co.ottawa.oh.us, co.ottawa.oh.us, co.ottawa.oh.us
Supply stress: dam.assets.ohio.gov, co.ottawa.oh.us, co.ottawa.oh.us, 13abc.com