Madison, MN
Lead detected, under the action levels
Latest 90th-percentile lead: 1 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.
About Madison
Madison serves about 1,511 people through 795 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 groundwater, in Lac Qui Parle County, Minnesota. EPA system ID: MN1370004; phone on file: 3205987373. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
That is down 2 ppb from 3 ppb in the period ending 2021. The highest 90th-percentile result EPA holds for Madison is 3 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 1 ppb |
| 2021 | 3 ppb |
Where this result ranks
Of the 966 Minnesota systems with a lead result, the median latest reading is 0 ppb; 7 are over 15 ppb right now and 48 have gone over at some point. Madison's 1 ppb sits at the 60th percentile in Minnesota and the 54th nationally (higher means more lead).
Nearby utilities
5 other systems share Lac Qui Parle County; 3 of them have a higher latest lead result than Madison. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Dawson | 1,466 | 2 ppb |
| Bellingham | 168 | 3 ppb |
| Boyd | 141 | 0 (not detected) |
| Marietta | 135 | 2 ppb |
| Nassau | 60 | 1 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Madison, MN 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 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. Systems that went over once often dip back under; here is what that means.