County · Michigan
St. Joseph County, Michigan: drinking water records
This overview covers 10 ZIP codes and 15 community water systems in St. Joseph County. It also stands in for 4 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 |
|---|---|---|---|---|---|
| Sturgis MI0006440 | 11,920 | 240 | 0 | 0 | 2 ppb |
| Three Rivers MI0006610 | 7,905 | 120 | 1 | 0 | 12 ppb |
| Glen Oaks Community College MI0002657 | 1,233 | 0 | 0 | 1 | 1.2 ppb |
| Michiana Mobile Home Park MI0040472 | 100 | 0 | 0 | 1 | 1 ppb |
| Constantine MI0001600 | 2,075 | 0 | 0 | 0 | 0 ppb |
| Lockport Township MI0003943 | 1,778 | 0 | 0 | 0 | 1.0 ppb |
| White Pigeon MI0007070 | 1,640 | 0 | 0 | 0 | 1.3 ppb |
| Centreville MI0001310 | 1,579 | 0 | 0 | 0 | 0 ppb |
| Colon MI0001540 | 1,190 | 0 | 0 | 0 | 0 ppb |
| Mendon MI0004240 | 920 | 0 | 0 | 0 | 0 ppb |
| Burr Oak MI0001000 | 828 | 0 | 0 | 0 | 0 ppb |
| Memory Lane Mobile Home Park MI0040470 | 340 | 0 | 0 | 0 | 3.0 ppb |
| Neighbors of Walnut Grove, LLC KS2014923 | 256 | 0 | 0 | 0 | 0.6 ppb |
| Washburn Lake Village MHP MI0040477 | 108 | 0 | 0 | 0 | 2 ppb |
| Klines Resort MI0040471 | 398 | 0 | 0 | 0 | not reported |
ZIP reports in St. Joseph 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: 49032, 49040, 49042, 49066.
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.