St Croix Falls Waterworks, WI
Lead detected, under the action levels
Latest 90th-percentile lead: 4.7 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 St Croix Falls Waterworks
St Croix Falls Waterworks serves about 2,079 people through 967 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 Polk County, Wisconsin. EPA system ID: WI6490343. Ask the utility on your bill for your address in their service line inventory.
Every lead result on file
That is down 4.2 ppb from 8.9 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for St Croix Falls Waterworks is 8.9 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 4.7 ppb |
| 2020 | 8.9 ppb |
| 2017 | 2.7 ppb |
How St Croix Falls Waterworks compares
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. St Croix Falls Waterworks's 4.7 ppb sits at the 87th percentile in Wisconsin and the 90th nationally (higher means more lead).
Nearby utilities
11 other systems share Polk County; 1 of them has a higher latest lead result than St Croix Falls Waterworks. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Amery Waterworks | 2,962 | 0 (not detected) |
| Osceola Waterworks | 2,680 | 0.29 ppb |
| Frederic Waterworks | 1,241 | 1.5 ppb |
| Luck Waterworks | 1,150 | 2.1 ppb |
| Clear Lake Waterworks | 1,061 | 2 ppb |
| Balsam Lake Waterworks | 1,031 | 2 ppb |
| Dresser Waterworks | 936 | 2 ppb |
| Milltown Waterworks | 915 | 3 ppb |
| Centuria Waterworks | 900 | 2.8 ppb |
| Clayton Waterworks | 765 | 6.5 ppb |
Your move
Test your own tap with a certified lab first-draw sample; St. Croix 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 St Croix 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. Why sampled homes are the worst-case ones is in the guide to reading the number. Size matters more than most people expect: small vs large water systems.