Cascade Waterworks, WI
Exceeded the action level in the past
Latest 90th-percentile lead: 1.8 ppb (monitoring period 2024-2024). 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.
About Cascade Waterworks
Cascade Waterworks serves about 719 people through 266 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 Sheboygan County, Wisconsin. EPA system ID: WI4600436. Ask the utility on your bill for your address in their service line inventory.
Cascade Waterworks's lead record
That is down 1.7 ppb from 3.5 ppb in the period ending 2024. The highest 90th-percentile result EPA holds for Cascade Waterworks is 18.6 ppb across 6 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 1.8 ppb |
| 2024 | 3.5 ppb |
| 2022 | 1.1 ppb |
| 2021 | 5.23 ppb |
| 2020 | 18.6 ppb over 15 |
| 2017 | 5.56 ppb |
How Cascade 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. Cascade Waterworks's 1.8 ppb sits at the 58th percentile in Wisconsin and the 67th nationally (higher means more lead).
Neighbouring systems
16 other systems share Sheboygan County; 9 of them have a higher latest lead result than Cascade Waterworks. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Sheboygan Water Utilities | 49,931 | 2.2 ppb |
| Plymouth Utilities | 8,964 | 6.17 ppb |
| Sheboygan Falls Utilities | 8,687 | 5.4 ppb |
| Sheboygan Tn Waterworks | 4,596 | 2.9 ppb |
| Oostburg Waterworks | 3,110 | 10.5 ppb |
| Kohler Waterworks | 2,271 | 0.82 ppb |
| Cedar Grove Waterworks | 2,213 | 8.9 ppb |
| Random Lake Waterworks | 1,594 | 0.53 ppb |
| Elkhart Lake Waterworks | 1,567 | 0.54 ppb |
| Kettle Moraine Correctional Institution | 1,544 | 0.34 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Cascade, 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 Cascade Waterworks whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 1530 ppb (copper action level 1,300 ppb).
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. Why an old exceedance still matters: over the limit before, under it now.