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Hardin County, Ohio — public water systems

At a glance

31 active public water systems are filed under Hardin County, Ohio in EPA's SDWIS records, together reporting 20,571 people served. The largest is Kenton City, which reports serving 8,360 people. 8 are community water systems serving people where they live; the other 23 are non-community systems, such as schools, workplaces, campgrounds and gas stations with their own supply.

Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.

Active systems

31

Population served

20.6K

Community systems

8

Groundwater share

100%

How does Hardin County compare with other Ohio counties?

Hardin County has the 43rd-most active public water systems among the 133 counties listed for active Ohio systems in EPA records; among the 92 with 3 or more systems, the median has 29. Its systems report 20,571 people served in total, the 73rd-largest county figure in the state and 0.2% of the statewide total. The average system here reports serving 664 people, well below the Ohio average of 2,767. Population figures are what each system reports; people served by more than one system, such as a wholesaler and the town that buys from it, are counted by each.

Where does Hardin County's drinking water come from?

By primary water source, Hardin County's active systems draw on groundwater (31, 100%). Overall, all rely mainly on groundwater (including purchased groundwater) and none on surface water, compared with 92% and 7.6% across Ohio. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, Kenton City, draws primarily on groundwater.

What kinds of water systems operate in Hardin County?

Hardin County's active systems break down as 8 community systems (26%), 1 non-transient non-community systems (3.2%) and 22 transient non-community systems (71%). A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. EPA lists their owner types as private (77%) and local government (23%).

Water systems in Hardin County

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Active public water systems in Hardin County, Ohio
#Water systemCountyPopulation servedTypeSource
1Kenton CityHardin8,360CommunityGroundwater
2Ada VillageHardin5,334CommunityGroundwater
3Forest VillageHardin1,354CommunityGroundwater
4Alger Village PwsHardin943CommunityGroundwater
5Dunkirk Village PwsHardin875CommunityGroundwater
6Mcguffey Village PwsHardin710CommunityGroundwater
7Mt Victory Village PwsHardin603CommunityGroundwater
8Little Creek Barn PwsHardin340Transient non-communityGroundwater
9Liberty Oaks Event VenueHardin240Transient non-communityGroundwater
10First Baptist Church - KentonHardin225Transient non-communityGroundwater
11Hardin Co Veterans Memorial Pk Golf CrseHardin185Transient non-communityGroundwater
12Walnut Grove Methodist Church PwsHardin160Transient non-communityGroundwater
13Hi-Road Drive-in TheaterHardin155Transient non-communityGroundwater
14France Lake and Saulisberry ParkHardin150Transient non-communityGroundwater
15Tresha Corporation PwsHardin146Transient non-communityGroundwater
16Kenton Chris Mission Alliance ChHardin110Transient non-communityGroundwater
17Kenton Eagles 2163Hardin75Transient non-communityGroundwater
18Quickstep Pentecostal Church of GodHardin65Transient non-communityGroundwater
19First Church of God - RidgewayHardin60Transient non-communityGroundwater
20Salty Longhorn'S Bar & Grill LLC PwsHardin60Transient non-communityGroundwater
21Pfeiffer Station General StoreHardin56Transient non-communityGroundwater
22Trillium Farm Holdings-Mt VictoryHardin55Non-transient non-communityGroundwater
23Hillcrest Estates Mobile Home CourtHardin49CommunityGroundwater
24Norada Lanes Bowling AlleyHardin46Transient non-communityGroundwater
25Liberty Baptist Church-Ada PwsHardin40Transient non-communityGroundwater
26St Johns Lutheran Church-Dola PwsHardin35Transient non-communityGroundwater
27Blanchard River Church of ChristHardin34Transient non-communityGroundwater
28Ridgemont School Gym/Football FieldHardin30Transient non-communityGroundwater
29Ream-Mcelroy Vfw Post 9381Hardin26Transient non-communityGroundwater
30Ada Full Gospel ChurchHardin25Transient non-communityGroundwater
31Grant Fellowship Church PwsHardin25Transient non-communityGroundwater

Hardin County water systems: frequently asked questions

How many public water systems are in Hardin County, Ohio?

EPA's SDWIS records file 31 active public water systems under Hardin County, Ohio: 8 community systems (26%), 1 non-transient non-community systems (3.2%) and 22 transient non-community systems (71%).

Who supplies drinking water in Hardin County, OH?

The largest community water systems filed under Hardin County are Kenton City (8,360 people served), Ada Village (5,334 people served) and Forest Village (1,354 people served). Which system serves a particular address depends on its service area, which EPA's SDWIS records do not include; a water bill or the local utility can confirm it.

Does Hardin County's drinking water come from groundwater or surface water?

Of the 31 active public water systems in Hardin County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, Kenton City, uses groundwater.

Where can I find a water quality report for Hardin County?

Each community water system must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1, covering the previous calendar year. 8 community systems are filed under Hardin County, so the report to look for is the one from the system that supplies your address.

How can I check violations for a water system in Hardin County?

Open the system's profile from the list on this page. Each profile shows the most recent Safe Drinking Water Act violations in EPA's records, with plain-English labels and whether each one is resolved. For current compliance status, EPA ECHO is the primary source.

More Ohio water systems

About this data

Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.

Cite as: AquaCensus, “Public water systems in Hardin County, Ohio”, https://aquacensus.com/water-systems/ohio/hardin (data as of October 1, 2026).