Tilden Township, MI
Lead detected, under the action levels
Latest 90th-percentile lead: 5.3 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.
Tilden Township at a glance
Tilden Township serves about 375 people through 130 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Marquette County, Michigan. EPA system ID: MI0004640; phone on file: 906-486-6580. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
The highest 90th-percentile result EPA holds for Tilden Township is 5.3 ppb across 1 monitoring period, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 5.3 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. Tilden Township's 5.3 ppb sits at the 89th percentile in Michigan and the 92nd nationally (higher means more lead).
Nearby utilities
22 other systems share Marquette County; 3 of them have a higher latest lead result than Tilden Township. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Marquette | 20,629 | 2 ppb |
| Ishpeming | 6,470 | 1.8 ppb |
| Negaunee | 4,568 | 1.9 ppb |
| K I Sawyer | 3,000 | - |
| Marquette Township | 2,700 | 1.3 ppb |
| Forsyth Township | 2,479 | 2 ppb |
| Ishpeming Twp - West | 2,148 | 2.9 ppb |
| Negaunee Township | 961 | 6 ppb |
| Republic Township | 700 | 1.3 ppb |
| Richmond Township | 489 | 5 ppb |
Next steps for Ishpeming, MI
Test your own tap with a certified lab first-draw sample; Ishpeming, 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 Tilden Township 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. What a 90th-percentile result does and does not tell you: how to read a lead result. The action level is dropping - the 10 ppb rule from 2027.