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Genesee County, Michigan — public water systems

At a glance

378 active public water systems are filed under Genesee County, Michigan in EPA's SDWIS records, together reporting 329,216 people served. The largest is City of Flint, which reports serving 81,252 people. 36 are community water systems serving people where they live; the other 342 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

378

Population served

329.2K

Community systems

36

Groundwater share

96%

How does Genesee County compare with other Michigan counties?

Genesee County has the 4th-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 329,216 people served in total, the 5th-largest county figure in the state and 3.7% of the statewide total. The average system here reports serving 871 people, roughly in line with 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 Genesee County's drinking water come from?

By primary water source, Genesee County's active systems draw on groundwater (363, 96%), purchased surface water (14, 3.7%) and surface water (1, 0.3%). Overall, 96% rely mainly on groundwater (including purchased groundwater) and 4% 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, City of Flint, draws primarily on purchased surface water.

What kinds of water systems operate in Genesee County?

Genesee County's active systems break down as 36 community systems (9.5%), 68 non-transient non-community systems (18%) and 274 transient non-community systems (72%). 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 (95%), local government (4.5%) and state government (0.5%).

The 50 largest water systems in Genesee County

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Active public water systems in Genesee County, Michigan
#Water systemCountyPopulation servedTypeSource
1Flint, City ofGenesee81,252CommunityPurchased surface water
2Genesee County Water SystemGenesee73,726CommunityPurchased surface water
3Charter Township of Grand BlancGenesee21,000CommunityPurchased surface water
4Burton, City ofGenesee21,000CommunityPurchased surface water
5Fenton, City ofGenesee11,746CommunityGroundwater
6Beecher Metropolitan DistrictGenesee9,400CommunityGroundwater
7Genesee TownshipGenesee8,473CommunityPurchased surface water
8Flushing, City ofGenesee8,311CommunityPurchased surface water
9Grand Blanc, City ofGenesee8,276CommunityGroundwater
10Swartz Creek, City ofGenesee5,800CommunityPurchased surface water
11Davison, City ofGenesee5,000CommunityGroundwater
12Linden, City ofGenesee4,150CommunityPurchased surface water
13Outdoor Adventures Lakeshore ResortGenesee3,196Transient non-communityGroundwater
14Mount Morris, City ofGenesee3,086CommunityPurchased surface water
15Hurley Medical CenterGenesee2,750Non-transient non-communityPurchased surface water
16Clio, City ofGenesee2,515CommunityPurchased surface water
17Montrose, City ofGenesee1,657CommunityPurchased surface water
18Outdoor Adventures Lakeshore ResortGenesee1,397Transient non-communityGroundwater
19Mclaren Flint HospitalGenesee1,300Non-transient non-communityPurchased surface water
20Speedway #8386 #11Genesee1,250Transient non-communityGroundwater
21Thompson Bp #901801Genesee1,248Transient non-communityGroundwater
22Mdot - Fenton, R624Genesee1,000Transient non-communityGroundwater
23Otisville, Village ofGenesee864CommunityGroundwater
24The River ChurchGenesee800Transient non-communityGroundwater
25Kearsley Armstong Middle SchoolGenesee773Non-transient non-communityGroundwater
26Faith Baptist Church & School - DavisonGenesee700Non-transient non-communityGroundwater
27Lakeville High SchoolGenesee600Non-transient non-communityGroundwater
28Lake Fenton Middle SchoolGenesee600Non-transient non-communityGroundwater
29Goodrich Oaktree ElementaryGenesee600Non-transient non-communityGroundwater
30Lake Fenton High SchoolGenesee580Non-transient non-communityGroundwater
31Goodrich Middle SchoolGenesee557Non-transient non-communityGroundwater
32Outdoor Adventures Whispering KnollsGenesee500Transient non-communityGroundwater
33Grand Blanc LanesGenesee500Transient non-communityGroundwater
34Cummings Ctr #3/Dairy BarnGenesee500Transient non-communityGroundwater
35Lakeville Middle SchoolGenesee500Non-transient non-communityGroundwater
36Lake Fenton West Shore ElementaryGenesee488Non-transient non-communityGroundwater
37Refuge Temple Church of FlintGenesee450Transient non-communityGroundwater
38Lake Fenton Torrey Hill IntermediateGenesee450Non-transient non-communityGroundwater
39Kearsley- Fiedler SchoolGenesee436Non-transient non-communityGroundwater
40Goodrich Reid ElementaryGenesee435Non-transient non-communityGroundwater
41Calvary Presbyterian ChurchGenesee425Non-transient non-communityGroundwater
42Goodrich High SchoolGenesee420Non-transient non-communityGroundwater
43Emmanuel Baptist ChurchGenesee412Transient non-communityGroundwater
44Atherton High SchoolGenesee400Non-transient non-communityGroundwater
45Davison Schools- Florence M Siple ElemGenesee400Non-transient non-communityGroundwater
46Beacon and BridgeGenesee400Transient non-communityGroundwater
47Davison Gates Elementary SchoolGenesee400Non-transient non-communityGroundwater
48Swartz Creek MeadowsGenesee400CommunityGroundwater
49Sugartree ApartmentsGenesee375CommunityGroundwater
50Atherton Elementary SchoolGenesee375Non-transient non-communityGroundwater

All other water systems in Genesee County (328)

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

Genesee County water systems: frequently asked questions

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

EPA's SDWIS records file 378 active public water systems under Genesee County, Michigan: 36 community systems (9.5%), 68 non-transient non-community systems (18%) and 274 transient non-community systems (72%).

Who supplies drinking water in Genesee County, MI?

The largest community water systems filed under Genesee County are City of Flint (81,252 people served), Genesee County Water System (73,726 people served) and Charter Township of Grand Blanc (21,000 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 Genesee County's drinking water come from groundwater or surface water?

Of the 378 active public water systems in Genesee County, 96% draw mainly on groundwater and 4% on surface water, counting purchased supplies. The largest system, City of Flint, uses purchased surface water.

Where can I find a water quality report for Genesee 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. 36 community systems are filed under Genesee 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 Genesee 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 Genesee County, Michigan”, https://aquacensus.com/water-systems/michigan/genesee (data as of October 1, 2026).