County · Michigan
Lenawee County, Michigan: drinking water records
This overview covers 18 ZIP codes and 31 community water systems in Lenawee County. It also stands in for 8 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Adrian MI0000040 | 23,663 | 120 | 0 | 0 | 0 ppb |
| Tecumseh MI0006560 | 8,521 | 240 | 0 | 0 | 3 ppb |
| Madison Township MI0004006 | 3,480 | 60 | 0 | 0 | 4 ppb |
| Blissfield MI0000750 | 3,276 | 120 | 1 | 0 | 2 ppb |
| Clinton MI0001470 | 2,336 | 0 | 0 | 1 | 2 ppb |
| Morenci MI0004490 | 2,220 | 0 | 0 | 1 | 1.5 ppb |
| Addison MI0000030 | 605 | 0 | 0 | 5 | 2.4 ppb |
| Neighbors of Westville Estates LLC IN5246031 | 315 | 0 | 0 | 2 | 0.6 ppb |
| Lee Villa Mobile Home Park MI0040308 | 283 | 0 | 0 | 1 | 0 ppb |
| Riga Township MI0005675 | 266 | 0 | 0 | 7 | 0 ppb |
| Leffingwell Estates MI0040311 | 210 | 0 | 0 | 1 | 0 ppb |
| Waters Edge Mh Community MI0040673 | 180 | 0 | 0 | 17 | 1 ppb |
| Country Villa Estates MI0040306 | 125 | 0 | 0 | 1 | 5 ppb |
| Neighbors of Rolling Prairie IN5246023 | 70 | 0 | 0 | 1 | 0 ppb |
| Clinton Estates MI0040305 | 68 | 0 | 0 | 1 | 1 ppb |
| Michiana Estates LLC - Water System IN5246026 | 35 | 0 | 0 | 5 | 0 ppb |
| Hudson MI0003280 | 2,307 | 0 | 0 | 0 | 0 ppb |
| Deerfield MI0001770 | 943 | 0 | 0 | 10 | not reported |
| Onsted MI0005020 | 907 | 0 | 0 | 0 | 4 ppb |
| Fairfield Township MI0002212 | 717 | 0 | 0 | 0 | 2 ppb |
| Britton MI0000890 | 611 | 0 | 0 | 0 | 0 ppb |
| South Shore Water System MI0004890 | 488 | 0 | 0 | 0 | 0 ppb |
| Lake Arrowhead Estates MI0003692 | 231 | 0 | 0 | 0 | 0 ppb |
| Countryside Mobile Home Estates MHP IL0915265 | 200 | 0 | 0 | 0 | 0 ppb |
| Man Nor Farms Subdivision MI0005180 | 193 | 0 | 0 | 0 | 7 ppb |
ZIP reports in Lenawee County
No ZIP report in this county is published yet.
These ZIP codes are covered by this overview because their utility has too little EPA data for a separate page: 49229, 49235, 49247, 49248, 49265, 49268, 49279, 49289.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.