County · Michigan
Cass County, Michigan: drinking water records
This overview covers 7 ZIP codes and 17 community water systems in Cass County. It also stands in for 3 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 |
|---|---|---|---|---|---|
| Dowagiac MI0001860 | 6,350 | 60 | 0 | 0 | 12 ppb |
| Cass County Water System MI0005234 | 1,350 | 0 | 0 | 1 | 0 ppb |
| Edwardsburg MI0002077 | 1,260 | 0 | 0 | 1 | 3.4 ppb |
| Bair Lake Bible Camp MI0000347 | 372 | 0 | 0 | 1 | 8 ppb |
| Colonial Acres MI0040094 | 265 | 0 | 0 | 1 | 1 ppb |
| Oakview MHP FL6142038 | 160 | 0 | 0 | 2 | 0.5 ppb |
| Barn Swallow Apartments MI0000418 | 50 | 0 | 0 | 4 | 0 ppb |
| Marcellus MI0004070 | 1,198 | 0 | 0 | 0 | 3.9 ppb |
| Eagle Lake Estates MHP MI0040103 | 230 | 0 | 0 | 0 | 3.6 ppb |
| Linden Mobile Home Park MI0040098 | 92 | 0 | 0 | 0 | 0 ppb |
| White Pines Mobile Home Park MI0040105 | 90 | 0 | 0 | 0 | 0 ppb |
| Colony Bay Condominiums MI0001552 | 75 | 0 | 0 | 0 | 0 ppb |
| C & M Mobile Home Court MI0040093 | 70 | 0 | 0 | 0 | 0 ppb |
| Country View Mobile Home Community MI0040598 | 55 | 0 | 0 | 0 | 1.5 ppb |
| Cassopolis MI0001250 | 1,815 | 0 | 0 | 0 | not reported |
| Autumn Hills MI0001910 | 50 | 0 | 0 | 0 | not reported |
| Eagle Lake Condominiums MI0001925 | 26 | 0 | 0 | 0 | not reported |
ZIP reports in Cass 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: 49031, 49061, 49130.
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.