Iron Mountain, MI
Lead detected, under the action levels
Latest 90th-percentile lead: 6.8 ppb (monitoring period 2023-2025). 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.
About Iron Mountain
Iron Mountain serves about 7,500 people through 3,569 service connections, which makes it a medium-sized system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Dickinson County, Michigan. EPA system ID: MI0003400. Ask the utility on your bill for your address in their service line inventory.
Lead results over time
That is down 2.2 ppb from 9 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Iron Mountain is 9 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 6.8 ppb |
| 2022 | 9 ppb |
| 2019 | 6.7 ppb |
| 2016 | 3 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. Iron Mountain's 6.8 ppb sits at the 92nd percentile in Michigan and the 94th nationally (higher means more lead).
Nearby utilities
5 other systems share Dickinson County; 0 of them have a higher latest lead result than Iron Mountain. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Kingsford | 5,480 | 2.5 ppb |
| Norway | 3,314 | 1.4 ppb |
| Breitung Twp.-East Kingsford | 1,200 | 2 ppb |
| Quinnesec | 1,200 | 4 ppb |
| White Birch Mobile Home Village | 250 | 1.7 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Iron Mountain, 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 Iron Mountain 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. Systems that went over once often dip back under; here is what that means.