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Eaton County, Michigan — public water systems

At a glance

103 active public water systems are filed under Eaton County, Michigan in EPA's SDWIS records, together reporting 67,916 people served. The largest is Charter Township of Delta, which reports serving 21,856 people. 16 are community water systems serving people where they live; the other 87 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

103

Population served

67.9K

Community systems

16

Groundwater share

100%

How does Eaton County compare with other Michigan counties?

Eaton County has the 40th-most active public water systems among the 131 counties listed for active Michigan systems in EPA records; among the 88 with 3 or more systems, the median has 92. Its systems report 67,916 people served in total, the 21st-largest county figure in the state and 0.8% of the statewide total. The average system here reports serving 659 people, about 22% below the Michigan average of 847. 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 Eaton County's drinking water come from?

By primary water source, Eaton County's active systems draw on groundwater (102, 99%) and purchased groundwater (1, 1%). Overall, all rely mainly on groundwater (including purchased groundwater) and none on surface water, compared with 97% and 3.1% across Michigan. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, Charter Township of Delta, draws primarily on purchased groundwater.

What kinds of water systems operate in Eaton County?

Eaton County's active systems break down as 16 community systems (16%), 18 non-transient non-community systems (17%) and 69 transient non-community systems (67%). 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 (91%) and local government (8.7%).

The 50 largest water systems in Eaton County

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Active public water systems in Eaton County, Michigan
#Water systemCountyPopulation servedTypeSource
1Charter Township of DeltaEaton21,856CommunityPurchased groundwater
2Charlotte, City ofEaton9,074CommunityGroundwater
3Grand Ledge, City ofEaton8,701CommunityGroundwater
4Eaton Rapids, City ofEaton5,340CommunityGroundwater
5Potterville, City ofEaton2,617CommunityGroundwater
6Olivet, City ofEaton1,758CommunityGroundwater
7Bellevue, Village ofEaton1,282CommunityGroundwater
8Hayes Middle SchoolEaton898Non-transient non-communityGroundwater
9Quality Dairy CompanyEaton895Transient non-communityGroundwater
10Maple Valley Jr & Sr HsEaton790Non-transient non-communityGroundwater
11Vermontville, Village ofEaton780CommunityGroundwater
12Dimondale ExpressEaton780Transient non-communityGroundwater
13Windsor EstatesEaton718CommunityGroundwater
14Sunfield, Village ofEaton680CommunityGroundwater
15Grand Ledge Pub Schls-Operations BldgEaton563Non-transient non-communityGroundwater
16Dimondale Elementary SchoolEaton455Non-transient non-communityGroundwater
17Charlotte Assembly of GodEaton400Transient non-communityGroundwater
18Eaton Green Estates SubdivisionEaton363CommunityGroundwater
19The English Inn South WellEaton300Transient non-communityGroundwater
20Liberty ChurchEaton300Transient non-communityGroundwater
21The English Inn BanquetEaton300Transient non-communityGroundwater
22Morninglory CafeEaton300Transient non-communityGroundwater
23Charlotte Moose LodgeEaton300Transient non-communityGroundwater
24Mt. Hope ParkEaton300Transient non-communityGroundwater
25The Northfork EstateEaton299Transient non-communityGroundwater
26Hidden Creek FarmsEaton250Transient non-communityGroundwater
27Sundance ChevroletEaton250Non-transient non-communityGroundwater
28Island City AcademyEaton246Non-transient non-communityGroundwater
29Grand Pointe SubdivisionEaton219CommunityGroundwater
30Windmill Truck StopEaton200Transient non-communityGroundwater
31Adesa Auto AuctionEaton200Non-transient non-communityGroundwater
32Funtyme Adventure ParksEaton200Transient non-communityGroundwater
33Auto KinitonEaton200Non-transient non-communityGroundwater
34Thrive ChurchEaton200Transient non-communityGroundwater
35Char Lanes Inc.Eaton200Transient non-communityGroundwater
36Robin'S NestEaton200Transient non-communityGroundwater
37Dimondale Health Care CenterEaton177CommunityGroundwater
38Faith Assembly of God-OlivetEaton175Transient non-communityGroundwater
39Hi-Way Mobile HavenEaton168CommunityGroundwater
40Olivet Assembly of GodEaton160Transient non-communityGroundwater
41Oneida Gospel ChurchEaton150Transient non-communityGroundwater
42Ledge Meadows Golf CourseEaton150Transient non-communityGroundwater
43Swede'S RestaurantEaton150Transient non-communityGroundwater
44Sunfield United Brethren ChurchEaton150Transient non-communityGroundwater
45Fox Memorial ParkEaton150Transient non-communityGroundwater
46Willow Wood FarmEaton150Transient non-communityGroundwater
47Church of the Nazarene-Eaton RapidsEaton135Transient non-communityGroundwater
48Bellevue Ttcm CampgroundEaton125Transient non-communityGroundwater
49Bellevue Conservation ClubEaton125Transient non-communityGroundwater
50Shady Green Pasture Bible CampEaton125Transient non-communityGroundwater

All other water systems in Eaton County (53)

The remaining active systems filed under Eaton County, largest first, with the population each reports serving.

Eaton County water systems: frequently asked questions

How many public water systems are in Eaton County, Michigan?

EPA's SDWIS records file 103 active public water systems under Eaton County, Michigan: 16 community systems (16%), 18 non-transient non-community systems (17%) and 69 transient non-community systems (67%).

Who supplies drinking water in Eaton County, MI?

The largest community water systems filed under Eaton County are Charter Township of Delta (21,856 people served), City of Charlotte (9,074 people served) and City of Grand Ledge (8,701 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 Eaton County's drinking water come from groundwater or surface water?

Of the 103 active public water systems in Eaton County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, Charter Township of Delta, uses purchased groundwater.

Where can I find a water quality report for Eaton 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. 16 community systems are filed under Eaton 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 Eaton 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 Michigan 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 Eaton County, Michigan”, https://aquacensus.com/water-systems/michigan/eaton (data as of October 1, 2026).