Ada, MN
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2021-2023). 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.
About Ada
Ada serves about 1,725 people through 853 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 Norman County, Minnesota. EPA system ID: MN1540001; phone on file: 2187845520. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
The highest 90th-percentile result EPA holds for Ada is 0 ppb across 1 monitoring period, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 0 (not detected) |
How Ada compares
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. Ada's reported as 0 (not detected) sits at the 41st percentile in Minnesota and the 30th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
8 other systems share Norman County; 2 of them have a higher latest lead result than Ada. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Twin Valley | 707 | 0 (not detected) |
| Halstad | 548 | 4 ppb |
| Hendrum | 285 | 0 (not detected) |
| Gary | 226 | 0 (not detected) |
| Shelly | 174 | 0 (not detected) |
| Perley | 113 | 0 (not detected) |
| Borup | 99 | 1 ppb |
| Flom Township | 26 | 0 (not detected) |
Your move
Look up your address in Ada'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 Ada 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. Why sampled homes are the worst-case ones is in the guide to reading the number. Small systems behave differently: why small systems go over more often.