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Allegan County, Michigan — public water systems

At a glance

302 active public water systems are filed under Allegan County, Michigan in EPA's SDWIS records, together reporting 104,093 people served. The largest is Allegan, which reports serving 5,930 people. 45 are community water systems serving people where they live; the other 257 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

302

Population served

104.1K

Community systems

45

Groundwater share

100%

How does Allegan County compare with other Michigan counties?

Allegan County has the 5th-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 104,093 people served in total, the 17th-largest county figure in the state and 1.2% of the statewide total. The average system here reports serving 345 people, about 59% 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 Allegan County's drinking water come from?

By primary water source, Allegan County's active systems draw on groundwater (301, 100%) and purchased groundwater (1, 0.3%). 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, Allegan, draws primarily on groundwater.

What kinds of water systems operate in Allegan County?

Allegan County's active systems break down as 45 community systems (15%), 52 non-transient non-community systems (17%) and 205 transient non-community systems (68%). 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 (94%), local government (4.3%) and state government (1.3%).

The 50 largest water systems in Allegan County

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Active public water systems in Allegan County, Michigan
#Water systemCountyPopulation servedTypeSource
1AlleganAllegan5,930CommunityGroundwater
2Kalamazoo Lake Sewer & Water AuthorityAllegan5,000CommunityGroundwater
3WaylandAllegan4,435CommunityGroundwater
4OtsegoAllegan4,120CommunityGroundwater
5PlainwellAllegan3,998CommunityGroundwater
6Bittersweet Ski Resort Inc.Allegan3,500Transient non-communityGroundwater
7Sandy Pines Wilderness Trls #1Allegan2,500Non-transient non-communityGroundwater
8FennvilleAllegan2,438CommunityGroundwater
9Us 131 Motorsports ParkAllegan2,000Transient non-communityGroundwater
10Mdot - Glenn, R726Allegan1,800Transient non-communityGroundwater
11Mdot - Saugatuck, R727Allegan1,800Transient non-communityGroundwater
12Jbs PackerlandAllegan1,500Non-transient non-communityGroundwater
13Lake DosterAllegan1,492CommunityGroundwater
14Otsego TownshipAllegan1,133CommunityGroundwater
15Camp BeechpointAllegan1,000Transient non-communityGroundwater
16Hamilton High School PoolAllegan1,000Transient non-communityGroundwater
17Camp BeechpointAllegan1,000Transient non-communityGroundwater
18Sandy Pines Wilderness Trls #4Allegan1,000Transient non-communityGroundwater
19Camp Beechpoint, Inc..Allegan1,000Transient non-communityGroundwater
20Hamilton Middle SchoolAllegan900Non-transient non-communityGroundwater
21J & H Oil Co - HamiltonAllegan900Transient non-communityGroundwater
22Sun Retreats Gun LakeAllegan900Transient non-communityGroundwater
23Hamilton Middle SchoolAllegan900Non-transient non-communityGroundwater
24Dorr Moose LodgeAllegan900Transient non-communityGroundwater
25Sun Retreats Gun LakeAllegan900Transient non-communityGroundwater
26Hamilton High SchoolAllegan875Non-transient non-communityGroundwater
27Dorr ElementaryAllegan800Non-transient non-communityGroundwater
28Burnips MarathonAllegan800Transient non-communityGroundwater
29Martin MarathonAllegan800Transient non-communityGroundwater
30Tri-Ponds Family Camp ResortAllegan800Transient non-communityGroundwater
31Tri-Ponds Family Camp Resort (Seasonal)Allegan799Transient non-communityGroundwater
32MartinAllegan785CommunityGroundwater
33Sandy Pines Wilderness Trls #3Allegan762Transient non-communityGroundwater
34J & H Oil Co - Otsego West End Mobil MarAllegan750Transient non-communityGroundwater
35Doster Country StoreAllegan700Transient non-communityGroundwater
36M-89 ShellAllegan700Transient non-communityGroundwater
37Jensen'S Rv ParkAllegan700Transient non-communityGroundwater
38Hunters GlenAllegan700CommunityGroundwater
39Cd Quik MartAllegan600Transient non-communityGroundwater
40Hopkins High SchoolAllegan600Non-transient non-communityGroundwater
41North Pointe ChurchAllegan600Transient non-communityGroundwater
42Paris Ridge Elementary SchoolAllegan550Non-transient non-communityGroundwater
43Dorr-LeightonAllegan500CommunityGroundwater
44Dhillon GasAllegan500Transient non-communityGroundwater
45Hamilton ElementaryAllegan500Non-transient non-communityGroundwater
46Town & Country Supermarket - Gun LakeAllegan500Non-transient non-communityGroundwater
47Dorr MarathonAllegan500Transient non-communityGroundwater
48Dnr-Saugatuck Dunes State ParkAllegan500Transient non-communityGroundwater
49Corner Bible ChurchAllegan500Transient non-communityGroundwater
50Cultivate ChurchAllegan500Transient non-communityGroundwater

All other water systems in Allegan County (252)

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

Allegan County water systems: frequently asked questions

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

EPA's SDWIS records file 302 active public water systems under Allegan County, Michigan: 45 community systems (15%), 52 non-transient non-community systems (17%) and 205 transient non-community systems (68%).

Who supplies drinking water in Allegan County, MI?

The largest community water systems filed under Allegan County are Allegan (5,930 people served), Kalamazoo Lake Sewer & Water Authority (5,000 people served) and Wayland (4,435 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 Allegan County's drinking water come from groundwater or surface water?

Of the 302 active public water systems in Allegan County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, Allegan, uses groundwater.

Where can I find a water quality report for Allegan 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. 45 community systems are filed under Allegan 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 Allegan 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 Allegan County, Michigan”, https://aquacensus.com/water-systems/michigan/allegan (data as of October 1, 2026).