Living in Lake Seneca, OH: what to set up and who to call
Lake Seneca has no town government of its own, so Williams County runs its elections and most services, and its children attend North Central Local School District. Tap water in Lake Seneca comes from Aqua Ohio - Seneca, which has a clean five-year EPA record (about 22% of systems its size had a health-based violation) and a latest lead result below detection.
I’m new in town
What to set up in Lake Seneca, and who provides it. Tap an answer for the details and where they come from.
Power, water and internet
Who to call to start service at a new address in Lake Seneca.
Power comes from North Western Elec Coop
North Western Elec Coop (North Western Elec Coop, Inc), a cooperative utility, serves all of Lake Seneca.
Start or move service: ppec.coop · (419) 399-5015
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Aqua Ohio - Seneca
Aqua Ohio - Seneca supplies almost all of Lake Seneca. It draws ground water and serves 750 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 78% of the 5,327 systems serving 501–1,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2022–Dec 2024, was 0.0 ppb, below the 15 ppb action level that applied. Results below detection are reported as 0, so 0 doesn’t mean no lead at any tap.
The system’s full record: EPA ECHO report
EPA SDWIS via Envirofacts (violations pulled Oct 9, 2026) and ECHO (lead samples, 2026Q3); service area: EPA Community Water System Service Area Boundaries v3.0. Violations are counted by the start of their compliance period. OH8601512.
Which providers serve Lake Seneca
This card will list the home internet providers the FCC’s National Broadband Map shows in Lake Seneca, the share of addresses that can get 100/20 Mbps and the share with fiber, with the map’s “as of” date.
Source to come: FCC Broadband Data Collection.
We don’t have Lake Seneca’s trash rules yet
Pickup rules, the dump and recycling in Lake Seneca.
Where your child goes to school
Public school districts and the school path by grade.
Lake Seneca is in North Central Local School District.
Test scores and every school: see Schools →U.S. Department of Education, NCES Common Core of Data, 2024–25. Enrollment rules and registration are the district’s.
No town hall: the county runs things
Lake Seneca is unincorporated, so Williams County is the local government.
Election office: FVAP local election office directory, updated Aug 2019; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Aug 3, 2026.
Lake Seneca spans 2 ZIP codes
ZIP codes where Lake Seneca residents live, with the share of the town in each.
| ZIP | Post office name | Share of Lake Seneca | ZIP’s residents in Lake Seneca |
|---|---|---|---|
| 43543 | Montpelier, OH | 94% | 7% |
| 43554 | Pioneer, OH | 6% | 1% |
Census 2020 ZIP Code Tabulation Areas, by census block; post office names: GeoNames (CC BY 4.0). ZIPs created since 2020 are missing.
Getting around, the ER and the library
One line each; the subject pages have the rest.
ER: CMS hospital data. Library: IMLS Public Libraries Survey, FY2024.
Questions about living in Lake Seneca
Who supplies Lake Seneca’s drinking water, and has it had violations?
Aqua Ohio - Seneca (EPA ID OH8601512). It reported no health-based violations to EPA in the five years to October 2026; 78% of systems its size had none. Its latest lead 90th percentile was 0.0 ppb (Jan 2022–Dec 2024), against a 15 ppb action level.
Who provides electricity in Lake Seneca?
North Western Elec Coop (North Western Elec Coop, Inc), a cooperative utility.
What ZIP codes are in Lake Seneca?
43543 (94%), 43554 (6%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Lake Seneca in?
North Central Local School District.
How do I register to vote in Lake Seneca?
In Ohio you can register online until 30 days before Election Day, in person until 30 days before Election Day, or by mail (postmarked 30 days before). Elections here are run by the Director, Williams County Board of Elections. Check your registration at voterlookup.ohiosos.gov.
Sources & dates
Every answer above names its source. Here they are with their dates.
- Water: EPA SDWIS (Envirofacts, pulled Oct 9, 2026), ECHO SDWA 2026Q3, EPA CWS Service Area Boundaries v3.0.
- Power: HIFLD Electric Retail Service Territories (map Aug 2023); EIA-861 final 2025.
- Trash: OpenStreetMap, Geofabrik extract of Oct 9, 2026. © OpenStreetMap contributors (ODbL).
- ZIP codes: Census 2020 ZCTA relationship files; GeoNames postal codes (CC BY 4.0).
- Schools: NCES Common Core of Data, 2024–25.
- Registration: vote.gov, updated Aug 3, 2026 (read Oct 10, 2026). Official sites and area codes: Wikidata.
- Election office: FVAP local election office directory (fetched Oct 10, 2026; each record dated), EAC EAVS 2024 jurisdictions; registration and lookup links from vote.gov’s state data, checked Oct 10, 2026.
- Internet (FCC): pending.