Oak Grove Mhp - Madison County, MI
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2026-2028). 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.
Oak Grove Mhp - Madison County at a glance
Oak Grove Mhp - Madison County serves about 138 people through 55 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws surface water, in Madison County, Michigan. EPA system ID: IL1195180; phone on file: 248-626-0737. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
Against the period ending 2025 (0.7 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Oak Grove Mhp - Madison County is 3.4 ppb across 8 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2028 | 0 (not detected) |
| 2025 | 0.7 ppb |
| 2024 | 0 (not detected) |
| 2023 | 3.4 ppb |
| 2022 | 2.4 ppb |
| 2021 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2019 | 1.1 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. Oak Grove Mhp - Madison County's reported as 0 (not detected) sits at the 12th percentile in Michigan and the 12th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
1 other system shares Madison County; 0 of them have a higher latest lead result than Oak Grove Mhp - Madison County. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Enchanted Village | 720 | 0 (not detected) |
Your move
Look up your address in Oak Grove Mhp - Madison County'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 Oak Grove Mhp - Madison County 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. A zero today does not rule out a jump later - the rules are tightening in 2027.