Jonesville, MI
Lead detected, under the action levels
Latest 90th-percentile lead: 3 ppb (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. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
Jonesville at a glance
Jonesville serves about 2,258 people through 871 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 Hillsdale County, Michigan. EPA system ID: MI0003490; phone on file: 517-849-2104. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
The highest 90th-percentile result EPA holds for Jonesville is 3 ppb across 1 monitoring period, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 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. Jonesville's 3 ppb sits at the 78th percentile in Michigan and the 82nd nationally (higher means more lead).
Nearby utilities
11 other systems share Hillsdale County; 0 of them have a higher latest lead result than Jonesville. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Hillsdale | 8,163 | 2 ppb |
| Litchfield | 1,310 | 0 (not detected) |
| Reading | 1,078 | 2.5 ppb |
| Michindoh Conference Center | 779 | - |
| Waldron | 538 | 0 (not detected) |
| Camden | 512 | 1 ppb |
| Somerset Centre Estates | 368 | 0 (not detected) |
| State Road Country Living Mhc | 73 | 1 ppb |
| Creekside Mhc | 70 | 0 (not detected) |
| Hillside Acres | 48 | 3 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Jonesville, MI may offer free or low-cost kits through the utility. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Jonesville 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. Why sampled homes are the worst-case ones is in the guide to reading the number. The action level is dropping - the 10 ppb rule from 2027.