Madison Heights, MI
Exceeded the action level in the past
Latest 90th-percentile lead: 7.4 ppb (monitoring period 2026-2026). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest result is under the action level, but this system has gone over 15 ppb before. Lead comes from pipes, not the source water, so a home with a lead service line can still be exposed. Test your own tap.
About Madison Heights
Madison Heights serves about 29,694 people through 11,081 service connections, which makes it a large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Oakland County, Michigan. EPA system ID: MI0004000; phone on file: 248-589-2294. They can tell you what your service line is made of and whether they pay to replace it.
Madison Heights's lead record
That is down 10.5 ppb from 17.9 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Madison Heights is 17.9 ppb across 9 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 7.4 ppb |
| 2025 | 17.9 ppb over 15 |
| 2024 | 6.9 ppb |
| 2023 | 11.2 ppb over 10 |
| 2022 | 12 ppb over 10 |
| 2021 | 6.99 ppb |
| 2020 | 13.34 ppb over 10 |
| 2019 | 13.98 ppb over 10 |
| 2017 | 8 ppb |
How Madison Heights compares
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. Madison Heights's 7.4 ppb sits at the 93rd percentile in Michigan and the 95th nationally (higher means more lead).
Neighbouring systems
105 other systems share Oakland County; 7 of them have a higher latest lead result than Madison Heights. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Troy | 85,854 | 0 (not detected) |
| Rochester Hills | 74,000 | 1.3 ppb |
| Waterford Township | 73,441 | 1 ppb |
| Southfield | 71,739 | 0 (not detected) |
| Pontiac | 63,776 | 1.6 ppb |
| Royal Oak, City Of | 57,236 | 4 ppb |
| Farmington Hills, City Of | 56,984 | 0 (not detected) |
| Novi, City Of | 56,780 | 0 (not detected) |
| West Bloomfield Township | 49,479 | 0 (not detected) |
| Bloomfield Township | 41,691 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Madison Heights, 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 Madison Heights 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. Why an old exceedance still matters: over the limit before, under it now.