Cass County Water System, MI
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2022-2024). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
Who runs the water here
Cass County Water System serves about 1,350 people through 867 service connections, which makes it a small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Cass County, Michigan. EPA system ID: MI0005234; phone on file: 269-782-2195. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
Against the period ending 2021 (1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Cass County Water System is 6 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0 (not detected) |
| 2021 | 1 ppb |
| 2020 | 6 ppb |
| 2019 | 3 ppb |
Where this result ranks
Of the 1,227 Michigan systems with a lead result, the median latest reading is 1 ppb; 31 are over 15 ppb right now and 109 have gone over at some point. Cass County Water System's reported as 0 (not detected) sits at the 24th percentile in Michigan and the 28th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
15 other systems share Cass County; 6 of them have a higher latest lead result than Cass County Water System. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Dowagiac | 6,350 | 6 ppb |
| Cassopolis | 1,815 | - |
| Edwardsburg | 1,260 | 3.4 ppb |
| Marcellus | 1,198 | 3.9 ppb |
| Bair Lake Bible Camp | 372 | 0 (not detected) |
| Colonial Acres | 265 | 1 ppb |
| Eagle Lake Estates Mhp | 230 | 3.6 ppb |
| Linden Mobile Home Park | 92 | 0 (not detected) |
| White Pines Mobile Home Park | 90 | 0 (not detected) |
| Colony Bay Condominiums | 75 | 0 (not detected) |
What to do in your house
Look up your address in Cass County Water System's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Cass County Water System whether it covers that cost before hiring anyone - many utilities now do.
These figures describe homes the utility sampled, not your tap. Only your service line record or a test of your own water answers the question for your house. The lead result guide covers how utilities pick the homes they sample. Small systems behave differently: why small systems go over more often.