River Falls Waterworks, WI
Lead detected, under the action levels
Latest 90th-percentile lead: 0.88 ppb (monitoring period 2023-2023). 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 River Falls Waterworks
River Falls Waterworks serves about 16,000 people through 5,316 service connections, which makes it a large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Pierce County, Wisconsin. EPA system ID: WI6480246. Ask the utility on your bill for your address in their service line inventory.
River Falls Waterworks's lead record
Against the period ending 2020 (0.93 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for River Falls Waterworks is 1 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 0.88 ppb |
| 2020 | 0.93 ppb |
| 2017 | 1 ppb |
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. River Falls Waterworks's 0.88 ppb sits at the 38th percentile in Wisconsin and the 49th nationally (higher means more lead).
Other water systems in Pierce County
10 other systems share Pierce County; 7 of them have a higher latest lead result than River Falls Waterworks. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Prescott Waterworks | 4,258 | 1.9 ppb |
| Ellsworth Waterworks | 3,304 | 2.4 ppb |
| Spring Valley Waterworks | 1,409 | 0 (not detected) |
| Elmwood Waterworks | 798 | 2.3 ppb |
| Bay City Waterworks | 499 | 2.05 ppb |
| St Croix Improvements | 175 | 0.93 ppb |
| Plum City Care Center Nursing Home | 120 | 3 ppb |
| Maiden Rock Water Utility | 118 | 0.39 ppb |
| Country Manor Apts | 50 | 3.5 ppb |
| Prairie View Senior Living | 31 | 0 (not detected) |
Next steps for River Falls, WI
Test your own tap with a certified lab first-draw sample; River Falls, 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 River Falls 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.