Waterville, MN
Exceeded the action level in the past
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2025-2025). 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.
Who runs the water here
Waterville serves about 1,868 people through 836 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 Le Sueur County, Minnesota. EPA system ID: MN1400015; phone on file: 5073628300. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Waterville's lead record
That is down 2 ppb from 2 ppb in the period ending 2024. The highest 90th-percentile result EPA holds for Waterville is 17 ppb across 4 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2024 | 2 ppb |
| 2024 | 2 ppb |
| 2023 | 17 ppb over 15 |
How Waterville 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. Waterville's reported as 0 (not detected) sits at the 42nd 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.
Nearby utilities
10 other systems share Le Sueur County; 8 of them have a higher latest lead result than Waterville. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| New Prague | 8,247 | 7 ppb |
| Lesueur | 4,170 | 0 (not detected) |
| Montgomery | 3,379 | 10 ppb |
| Le Center | 2,544 | 0 (not detected) |
| Cleveland | 719 | 2 ppb |
| Kasota | 670 | 2 ppb |
| Elysian | 656 | 2 ppb |
| Kilkenny | 134 | 2 ppb |
| Lake And Links Homeowners Association | 63 | 1 ppb |
| Webster Street Homes | 34 | 4 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Waterville, 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 Waterville 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.