Chippewa Falls Waterworks, WI
Lead detected, under the action levels
Latest 90th-percentile lead: 2.2 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.
Chippewa Falls Waterworks at a glance
Chippewa Falls Waterworks serves about 13,375 people through 5,240 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 Chippewa County, Wisconsin. EPA system ID: WI6090456. Ask the utility on your bill for your address in their service line inventory.
Chippewa Falls Waterworks's lead record
That is down 2.2 ppb from 4.4 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for Chippewa Falls Waterworks is 4.4 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 2.2 ppb |
| 2020 | 4.4 ppb |
| 2017 | 3.9 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. Chippewa Falls Waterworks's 2.2 ppb sits at the 66th percentile in Wisconsin and the 75th nationally (higher means more lead).
Neighbouring systems
10 other systems share Chippewa County; 2 of them have a higher latest lead result than Chippewa Falls Waterworks. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Lake Hallie Waterworks Village Of | 6,701 | 1.1 ppb |
| Bloomer Waterworks | 3,680 | 0 (not detected) |
| Stanley Waterworks | 3,500 | 2 ppb |
| Cornell Waterworks | 1,390 | 8.5 ppb |
| Cadott Waterworks | 1,352 | 1.2 ppb |
| New Auburn Waterworks | 549 | 0 (not detected) |
| Boyd Waterworks | 540 | 1.6 ppb |
| Hoffmanns Wissota Court | 126 | 0.3 ppb |
| Lafayette Court | 78 | 2.5 ppb |
| Duncan Prairie Mhc | 64 | 1.19 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Chippewa 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 Chippewa 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. Systems that went over once often dip back under; here is what that means.