Rockwood, MI
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2023-2023). 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
Rockwood serves about 3,240 people through 1,012 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 surface water, in Wayne County, Michigan. EPA system ID: MI0005750; phone on file: 734-379-9496. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Rockwood's lead record
Against the period ending 2022 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Rockwood is 2.12 ppb across 6 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2021 | 1.08 ppb |
| 2020 | 0 (not detected) |
| 2019 | 0.93 ppb |
| 2017 | 2.12 ppb |
Against other Michigan systems
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. Rockwood's reported as 0 (not detected) sits at the 29th percentile in Michigan and the 33rd nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
43 other systems share Wayne County; 29 of them have a higher latest lead result than Rockwood. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Detroit City Of | 633,218 | 7.5 ppb |
| Dearborn | 109,976 | 6 ppb |
| Canton Township | 99,627 | 0 (not detected) |
| Livonia | 96,942 | 0 (not detected) |
| Westland | 85,420 | 0 (not detected) |
| Taylor | 63,409 | 10.7 ppb |
| Dearborn Heights | 57,774 | 0 (not detected) |
| Redford Township | 49,504 | 8.2 ppb |
| Lincoln Park | 38,144 | 3.1 ppb |
| Brownstown Township | 33,194 | 0 (not detected) |
Next steps for Rockwood, MI
Look up your address in Rockwood'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 Rockwood 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. A zero today does not rule out a jump later - the rules are tightening in 2027.