Michigan
Cass County drinking water quality
149 active public water systems serve 35,578 people in Cass County. 79 are compliant, 70 had at least one EPA violation in the past three years, 1 is a designated serious violator, and 1 carries a health flag.
Needs attention
Community water systems
19 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Dowagiac Dowagiac |
6,350 | 2 | 0 | |
|
Cassopolis Cassopolis |
1,815 | 3 | 0 | |
|
Cass County Water System |
1,350 | 1 | 0 | |
|
Edwardsburg Edwardsburg |
1,260 | 1 | 0 | |
|
Marcellus Marcellus |
1,198 | 1 | 0 | |
|
Bair Lake Bible Camp Jones |
372 | 1 | 0 | |
|
Colonial Acres |
265 | 2 | 0 | |
|
Eagle Lake Estates MHP |
230 | 0 | 0 | |
|
Barron Lake/rosebush |
114 | 0 | 0 | |
|
Rustic Acres Park |
108 | 1 | 0 | |
|
Marlin Village Mobile Home Park |
95 | 1 | 0 | |
|
Linden Mobile Home Park |
92 | 0 | 0 | |
|
White Pines Mobile Home Park |
90 | 2 | 0 | |
|
Colony Bay Condominiums |
75 | 0 | 0 | |
|
C & M Mobile Home Court |
70 | 0 | 0 | |
|
Country View Mobile Home Community |
55 | 0 | 0 | |
|
Autumn Hills |
50 | 0 | 0 | |
|
Barn Swallow Apartments Cassopolis |
50 | 1 | 1 | |
|
Eagle Lake Condominiums |
26 | 2 | 0 |
Non-community systems (130: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
Inactive systems (195, no longer operating or reporting)
Kept for the record and excluded from the county totals above. Browse inactive systems.
About this data
Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Michigan records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.