Eleva Waterworks, WI
Lead detected, under the action levels
Latest 90th-percentile lead: 4 ppb (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. 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.
Who runs the water here
Eleva Waterworks serves about 635 people through 290 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 Trempealeau County, Wisconsin. EPA system ID: WI6620270. Ask the utility on your bill for your address in their service line inventory.
Eleva Waterworks's lead record
That is up 4 ppb from 0 ppb in the period ending 2024. The highest 90th-percentile result EPA holds for Eleva Waterworks is 4 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 4 ppb |
| 2024 | 0 (not detected) |
| 2023 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2017 | 0 (not detected) |
Against other Wisconsin systems
Of the 947 Wisconsin systems with a lead result, the median latest reading is 1.33 ppb; 6 are over 15 ppb right now and 71 have gone over at some point. Eleva Waterworks's 4 ppb sits at the 83rd percentile in Wisconsin and the 87th nationally (higher means more lead).
Neighbouring systems
13 other systems share Trempealeau County; 2 of them have a higher latest lead result than Eleva Waterworks. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Arcadia Waterworks | 3,737 | 1.84 ppb |
| Trempealeau Waterworks | 1,888 | 0 (not detected) |
| Whitehall Waterworks | 1,820 | 1.5 ppb |
| Osseo Waterworks | 1,701 | 1.23 ppb |
| Galesville Waterworks | 1,679 | 2.84 ppb |
| Independence Waterworks | 1,500 | 0 (not detected) |
| Blair Waterworks | 1,280 | 0 (not detected) |
| Strum Waterworks | 1,100 | 0.8 ppb |
| Ettrick Waterworks | 536 | 1.87 ppb |
| Pigeon Falls Waterworks | 409 | 1.5 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Eleva, WI 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 Eleva Waterworks 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. Size matters more than most people expect: small vs large water systems.