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Berrien County, Michigan — public water systems

At a glance

196 active public water systems are filed under Berrien County, Michigan in EPA's SDWIS records, together reporting 131,038 people served. The largest is Southwest Michigan Regional Sanitary Sew, which reports serving 26,780 people. 35 are community water systems serving people where they live; the other 161 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

196

Population served

131K

Community systems

35

Groundwater share

93.4%

How does Berrien County compare with other Michigan counties?

Berrien County has the 13th-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 131,038 people served in total, the 14th-largest county figure in the state and 1.5% of the statewide total. The average system here reports serving 669 people, about 21% 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 Berrien County's drinking water come from?

By primary water source, Berrien County's active systems draw on groundwater (180, 92%), purchased surface water (7, 3.6%), surface water (6, 3.1%) and purchased groundwater (3, 1.5%). Overall, 93% rely mainly on groundwater (including purchased groundwater) and 6.6% 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, Southwest Michigan Regional Sanitary Sew, draws primarily on purchased surface water.

What kinds of water systems operate in Berrien County?

Berrien County's active systems break down as 35 community systems (18%), 31 non-transient non-community systems (16%) and 130 transient non-community systems (66%). 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 (84%), local government (12%), public/private partnership (2%) and state government (1.5%).

The 50 largest water systems in Berrien County

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Active public water systems in Berrien County, Michigan
#Water systemCountyPopulation servedTypeSource
1Southwest Michigan Regional Sanitary SewBerrien26,780CommunityPurchased surface water
2NilesBerrien14,215CommunityGroundwater
3Benton HarborBerrien9,103CommunitySurface water
4St JosephBerrien7,930CommunitySurface water
5Benton Charter TownshipBerrien6,768CommunitySurface water
6BuchananBerrien4,871CommunityGroundwater
7Lake Charter TownshipBerrien4,177CommunitySurface water
8Andrews UniversityBerrien3,000CommunityPurchased groundwater
9New Buffalo TownshipBerrien2,845CommunityPurchased surface water
10Chikaming TownshipBerrien2,825CommunityPurchased surface water
11WatervlietBerrien2,735CommunityGroundwater
12Niles TownshipBerrien2,270CommunityGroundwater
13BridgmanBerrien2,096CommunitySurface water
14Berrien SpringsBerrien1,910CommunityGroundwater
15New BuffaloBerrien1,900CommunitySurface water
16Mdot - Watervliet, R706Berrien1,877Transient non-communityGroundwater
17Three OaksBerrien1,622CommunityGroundwater
18Oronoko TownshipBerrien1,610CommunityPurchased groundwater
19ColomaBerrien1,555CommunityGroundwater
20Coloma Charter TownshipBerrien1,425CommunityPurchased groundwater
21BarodaBerrien910CommunityPurchased surface water
22Riverside Food MartBerrien800Transient non-communityGroundwater
23Fullers Resort & CampgroundBerrien796Transient non-communityGroundwater
24Summit ChurchBerrien750Transient non-communityGroundwater
25Bear Cave Resort 3Berrien684Transient non-communityGroundwater
26Bear Cave Resort 4Berrien684Transient non-communityGroundwater
27Bear Cave Resort 2Berrien684Transient non-communityGroundwater
28Eau ClaireBerrien610CommunityGroundwater
29St. Bernard'S ChurchBerrien600Transient non-communityGroundwater
30Lk Mich Beach Prop Owner AssocBerrien558Transient non-communityGroundwater
31Coloma/St Joseph KoaBerrien540Transient non-communityGroundwater
32Belle Plaza SouthBerrien525Non-transient non-communityGroundwater
33Cannabis ClubBerrien520Transient non-communityGroundwater
34Riverfront Park CampgroundBerrien520Transient non-communityGroundwater
35Jars 6.0Berrien500Transient non-communityGroundwater
36Countryside Academy Elementary SchoolBerrien500Non-transient non-communityGroundwater
37Countryside Academy-Meadowbrook Main SchBerrien495Non-transient non-communityGroundwater
38Cntryside Acad - Meadowbrooks Sm ClassBerrien495Non-transient non-communityGroundwater
39North Lake Event CenterBerrien402Transient non-communityGroundwater
40Millburg ShellBerrien400Transient non-communityGroundwater
41Berrien Center Bible ChurchBerrien400Transient non-communityGroundwater
42Midway Baptist ChurchBerrien325Transient non-communityGroundwater
43Dimaggio'S PizzaBerrien300Transient non-communityGroundwater
44Mdot - Jonas R.P. Artesian Flow P719Berrien300Transient non-communityGroundwater
45Grand BeachBerrien272CommunityPurchased surface water
46Vickers Engineering, Inc..Berrien270Non-transient non-communityGroundwater
47Sweet Cherry ResortBerrien250Transient non-communityGroundwater
48Tabor Hill Winery & RestaurantBerrien250Transient non-communityGroundwater
49Light House PlazaBerrien250Transient non-communityGroundwater
50Grace Christian SchoolBerrien244Non-transient non-communityGroundwater

All other water systems in Berrien County (146)

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

Berrien County water systems: frequently asked questions

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

EPA's SDWIS records file 196 active public water systems under Berrien County, Michigan: 35 community systems (18%), 31 non-transient non-community systems (16%) and 130 transient non-community systems (66%).

Who supplies drinking water in Berrien County, MI?

The largest community water systems filed under Berrien County are Southwest Michigan Regional Sanitary Sew (26,780 people served), Niles (14,215 people served) and Benton Harbor (9,103 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 Berrien County's drinking water come from groundwater or surface water?

Of the 196 active public water systems in Berrien County, 93% draw mainly on groundwater and 6.6% on surface water, counting purchased supplies. The largest system, Southwest Michigan Regional Sanitary Sew, uses purchased surface water.

Where can I find a water quality report for Berrien 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. 35 community systems are filed under Berrien 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 Berrien 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 Berrien County, Michigan”, https://aquacensus.com/water-systems/michigan/berrien (data as of October 1, 2026).