Chestnut Hills, MI
No lead results on file with EPA
Latest 90th-percentile lead: no result on file. The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. EPA's database has no Lead and Copper Rule results for this system. Without them there is nothing to go on, so a tap test is the only way to know.
Who runs the water here
Chestnut Hills serves about 813 people through 325 service connections, which makes it a small system under EPA's size classes. It is privately owned and draws groundwater, in Washtenaw County, Michigan. EPA system ID: MI0001397; phone on file: 810-599-5147. They can tell you what your service line is made of and whether they pay to replace it.
Nearby utilities
30 other systems share Washtenaw County. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Ann Arbor | 123,851 | 2.3 ppb |
| Ypsilanti Community Utility Authority | 53,988 | 4.1 ppb |
| Pittsfield Township | 24,500 | 0 (not detected) |
| Saline | 9,158 | 0 (not detected) |
| Scio Township | 8,500 | 0 (not detected) |
| Milan | 7,363 | 5.1 ppb |
| Superior Township | 6,830 | 0 (not detected) |
| Chelsea | 5,474 | 0 (not detected) |
| Dexter | 4,500 | 0 (not detected) |
| Augusta Township | 3,907 | 0 (not detected) |
Your move
Test your own tap with a certified lab first-draw sample; Brighton, 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 Chestnut Hills 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.