Skip to content
AquaCensus

Cass County, Michigan — public water systems

At a glance

135 active public water systems are filed under Cass County, Michigan in EPA's SDWIS records, together reporting 33,840 people served. The largest is Dowagiac, which reports serving 6,350 people. 16 are community water systems serving people where they live; the other 119 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

135

Population served

33.8K

Community systems

16

Groundwater share

100%

How does Cass County compare with other Michigan counties?

Cass County has the 25th-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 33,840 people served in total, the 39th-largest county figure in the state and 0.4% of the statewide total. The average system here reports serving 251 people, well 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 Cass County's drinking water come from?

By primary water source, Cass County's active systems draw on groundwater (134, 99%) and purchased groundwater (1, 0.7%). 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, Dowagiac, draws primarily on groundwater.

What kinds of water systems operate in Cass County?

Cass County's active systems break down as 16 community systems (12%), 15 non-transient non-community systems (11%) and 104 transient non-community systems (77%). 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 (96%) and local government (3.7%).

The 50 largest water systems in Cass County

🔒 Create a free account to export CSV
Active public water systems in Cass County, Michigan
#Water systemCountyPopulation servedTypeSource
1DowagiacCass6,350CommunityGroundwater
2CassopolisCass1,815CommunityGroundwater
3Cass County Water SystemCass1,350CommunityGroundwater
4EdwardsburgCass1,260CommunityGroundwater
5MarcellusCass1,198CommunityGroundwater
6Howard-Ellis ElementaryCass780Non-transient non-communityGroundwater
7Shady Point Campground West WellCass640Transient non-communityGroundwater
8Willow Shores Campground 2Cass600Transient non-communityGroundwater
9Willow Shores Campground 1Cass600Transient non-communityGroundwater
10Willow Shores Campground 3Cass600Transient non-communityGroundwater
11Loyal Order of Moose 933Cass575Transient non-communityGroundwater
12Camelot Campground East WellCass560Transient non-communityGroundwater
13Camelot CampgroundCass560Transient non-communityGroundwater
14Spaulding Lake CampgroundCass484Transient non-communityGroundwater
15Melville'S 7 Lakes Family Campground LLCCass400Transient non-communityGroundwater
16Edwardsburg Conservation ClubCass400Transient non-communityGroundwater
17Melville'S 7 Lakes Family Campground OffCass400Transient non-communityGroundwater
18Melville'S 7 Lakes Fmly Cg San StationCass400Transient non-communityGroundwater
19Cranberry Lake CampgroundCass396Transient non-communityGroundwater
20Cranberry Lake Campground 3Cass396Transient non-communityGroundwater
21Eagle Lake Elem School East WellCass388Non-transient non-communityGroundwater
22Eagle Lake Elem School West WellCass388Non-transient non-communityGroundwater
23Bair Lake Bible CampCass372CommunityGroundwater
24Goff Lake CampgroundCass360Transient non-communityGroundwater
25Camp TamarackCass350Transient non-communityGroundwater
26Hemlock Lake Campground, Inc..Cass332Transient non-communityGroundwater
27Shady Point Campground House WellCass320Transient non-communityGroundwater
28Kincheloe ElementaryCass300Non-transient non-communityGroundwater
29Hope Community Church-NilesCass300Transient non-communityGroundwater
30American Legion #365Cass300Transient non-communityGroundwater
31Our Lady of the Lake Catholic ParishCass300Transient non-communityGroundwater
32Mill'S Meat and GroceryCass300Transient non-communityGroundwater
33Colonial AcresCass265CommunityGroundwater
34Summit LifeCass250Transient non-communityGroundwater
35Edwardsburg Sports ComplexCass250Transient non-communityGroundwater
36Sacred Heart of Mary-DowagiacCass250Transient non-communityGroundwater
37Camp Friedenswald-DiningCass240Transient non-communityGroundwater
38Camp Friedenswald-North CabinsCass240Transient non-communityGroundwater
39Camp Friedenswald-South CabinsCass240Transient non-communityGroundwater
40Eagle Lake Estates MHPCass230CommunityGroundwater
41Pitcher Lake CampgroundCass228Transient non-communityGroundwater
42Revival Wedding BarnCass200Transient non-communityGroundwater
43Porter Baptist ChurchCass200Transient non-communityGroundwater
44Swiss Valley Ski and Snowboard AreaCass200Transient non-communityGroundwater
45Four Lakes Country ClubCass200Transient non-communityGroundwater
46Lakeside CampgroundCass200Transient non-communityGroundwater
47Edwardsburg Crossing-BiggbyCass200Transient non-communityGroundwater
48Stacy'S Food & SpiritsCass175Transient non-communityGroundwater
49Lyons Industries Inc.Cass155Non-transient non-communityGroundwater
50D Bar and BurgerCass150Transient non-communityGroundwater

All other water systems in Cass County (85)

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

Cass County water systems: frequently asked questions

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

EPA's SDWIS records file 135 active public water systems under Cass County, Michigan: 16 community systems (12%), 15 non-transient non-community systems (11%) and 104 transient non-community systems (77%).

Who supplies drinking water in Cass County, MI?

The largest community water systems filed under Cass County are Dowagiac (6,350 people served), Cassopolis (1,815 people served) and Cass County Water System (1,350 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 Cass County's drinking water come from groundwater or surface water?

Of the 135 active public water systems in Cass County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, Dowagiac, uses groundwater.

Where can I find a water quality report for Cass 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 Cass 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 Cass 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 Cass County, Michigan”, https://aquacensus.com/water-systems/michigan/cass (data as of October 1, 2026).