Skip to content
AquaCensus

Lenawee County, Michigan — public water systems

At a glance

182 active public water systems are filed under Lenawee County, Michigan in EPA's SDWIS records, together reporting 79,516 people served. The largest is Adrian, which reports serving 23,663 people. 26 are community water systems serving people where they live; the other 156 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

182

Population served

79.5K

Community systems

26

Groundwater share

97.8%

How does Lenawee County compare with other Michigan counties?

Lenawee County has the 16th-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 79,516 people served in total, the 20th-largest county figure in the state and 0.9% of the statewide total. The average system here reports serving 437 people, about half of 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 Lenawee County's drinking water come from?

By primary water source, Lenawee County's active systems draw on groundwater (177, 97%), surface water (3, 1.6%), purchased groundwater (1, 0.5%) and purchased surface water (1, 0.5%). Overall, 98% rely mainly on groundwater (including purchased groundwater) and 2.2% 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, Adrian, draws primarily on surface water.

What kinds of water systems operate in Lenawee County?

Lenawee County's active systems break down as 26 community systems (14%), 23 non-transient non-community systems (13%) and 133 transient non-community systems (73%). 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 (89%), local government (9.3%) and state government (1.6%).

The 50 largest water systems in Lenawee County

🔒 Create a free account to export CSV
Active public water systems in Lenawee County, Michigan
#Water systemCountyPopulation servedTypeSource
1AdrianLenawee23,663CommunitySurface water
2TecumsehLenawee8,521CommunityGroundwater
3The Groves of MichiganLenawee6,460Transient non-communityGroundwater
4Madison TownshipLenawee3,480CommunityGroundwater
5BlissfieldLenawee3,276CommunitySurface water
6ClintonLenawee2,336CommunityGroundwater
7HudsonLenawee2,307CommunityGroundwater
8MorenciLenawee2,220CommunityGroundwater
9Michigan International SpeedwayLenawee1,000Transient non-communityGroundwater
10DeerfieldLenawee943CommunitySurface water
11OnstedLenawee907CommunityGroundwater
12Ps Food Mart Convenience King #3011Lenawee900Transient non-communityGroundwater
13Dnr - Hayes State ParkLenawee784Transient non-communityGroundwater
14Fairfield TownshipLenawee717CommunityPurchased groundwater
15BrittonLenawee611CommunityGroundwater
16AddisonLenawee605CommunityGroundwater
17Cement City Ps Food MartLenawee600Transient non-communityGroundwater
18Perky Pantry Irish HillsLenawee600Transient non-communityGroundwater
19Wacker Chemical CorporationLenawee600Non-transient non-communityGroundwater
20Perky Pantry PentecostLenawee500Transient non-communityGroundwater
21South Shore Water SystemLenawee488CommunityGroundwater
22Tecumseh South Early Learning CtrLenawee450Non-transient non-communityGroundwater
23Usa2go, Dba Brooklyn ConvenienceLenawee400Transient non-communityGroundwater
24Tri-County Oil CoLenawee375Transient non-communityGroundwater
25Perky Pantry Westside StoreLenawee350Transient non-communityGroundwater
26Dollar General #12861 - ClintonLenawee320Transient non-communityGroundwater
27Lightning Quick Gas-N-Go 14Lenawee304Transient non-communityGroundwater
28Grace Point Evangelical Free ChurchLenawee300Transient non-communityGroundwater
29Clark'S CornerLenawee300Transient non-communityGroundwater
30Clinton Fuel Express, Inc.Lenawee300Transient non-communityGroundwater
31Artesian Wells Sports BarLenawee300Transient non-communityGroundwater
32Lee Villa Mobile Home ParkLenawee283CommunityGroundwater
33Lightning Quick Gas-N-GoLenawee269Transient non-communityGroundwater
34Riga TownshipLenawee266CommunityPurchased surface water
35Deep Lake Recreational ParkLenawee250Transient non-communityGroundwater
36Deep Lake Recreational Park 2Lenawee250Transient non-communityGroundwater
37St. John'S Lutheran Church - AdrianLenawee250Non-transient non-communityGroundwater
38Lake Arrowhead EstatesLenawee231CommunityGroundwater
39Leffingwell EstatesLenawee210CommunityGroundwater
40Porter Education CenterLenawee208Non-transient non-communityGroundwater
41Faith Baptist Church - AdrianLenawee205Transient non-communityGroundwater
42Dnr-Lake Hudson Rec Area CgLenawee200Transient non-communityGroundwater
43Hope Lutheran Church-AdrianLenawee200Transient non-communityGroundwater
44St. Joseph Shrine ChurchLenawee200Transient non-communityGroundwater
45Indian Creek CampgroundLenawee200Transient non-communityGroundwater
46Dnr-Lake Hudson Rec Area-OfficeLenawee200Transient non-communityGroundwater
47Lightning Quick Gas-N-Go #18Lenawee200Transient non-communityGroundwater
48West Rome Baptist ChurchLenawee200Transient non-communityGroundwater
49Mitchell Memorial Park 2Lenawee200Transient non-communityGroundwater
50Mitchell Memorial Park 1Lenawee200Transient non-communityGroundwater

All other water systems in Lenawee County (132)

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

Lenawee County water systems: frequently asked questions

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

EPA's SDWIS records file 182 active public water systems under Lenawee County, Michigan: 26 community systems (14%), 23 non-transient non-community systems (13%) and 133 transient non-community systems (73%).

Who supplies drinking water in Lenawee County, MI?

The largest community water systems filed under Lenawee County are Adrian (23,663 people served), Tecumseh (8,521 people served) and Madison Township (3,480 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 Lenawee County's drinking water come from groundwater or surface water?

Of the 182 active public water systems in Lenawee County, 98% draw mainly on groundwater and 2.2% on surface water, counting purchased supplies. The largest system, Adrian, uses surface water.

Where can I find a water quality report for Lenawee 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. 26 community systems are filed under Lenawee 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 Lenawee 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 Lenawee County, Michigan”, https://aquacensus.com/water-systems/michigan/lenawee (data as of October 1, 2026).