Kiel Waterworks, WI
Exceeded the action level in the past
Latest 90th-percentile lead: 0.77 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. 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 Kiel Waterworks
Kiel Waterworks serves about 3,932 people through 1,456 service connections, which makes it a medium-sized system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Manitowoc County, Wisconsin. EPA system ID: WI4360427. Ask the utility on your bill for your address in their service line inventory.
Lead results over time
Against the period ending 2023 (1.3 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Kiel Waterworks is 16 ppb across 14 monitoring periods, 2 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0.77 ppb |
| 2023 | 1.3 ppb |
| 2023 | 1.7 ppb |
| 2021 | 6.5 ppb |
| 2021 | 6.4 ppb |
| 2020 | 5.8 ppb |
| 2020 | 5.8 ppb |
| 2019 | 5.1 ppb |
| 2019 | 5.3 ppb |
| 2018 | 5.5 ppb |
| 2018 | 16 ppb over 15 |
| 2017 | 9.9 ppb |
| 2017 | 7.9 ppb |
| 2016 | 16 ppb over 15 |
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. Kiel Waterworks's 0.77 ppb sits at the 33rd percentile in Wisconsin and the 47th nationally (higher means more lead).
Nearby utilities
13 other systems share Manitowoc County; 13 of them have a higher latest lead result than Kiel Waterworks. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Manitowoc Waterworks | 34,500 | 7.7 ppb |
| Two Rivers Waterworks | 11,270 | 13 ppb |
| Cleveland Waterworks | 1,524 | 6.3 ppb |
| Mishicot Waterworks | 1,432 | 1.9 ppb |
| Reedsville Waterworks | 1,200 | 2.6 ppb |
| Valders Waterworks | 954 | 6.8 ppb |
| Whitelaw Waterworks | 757 | 3.1 ppb |
| St Nazianz Waterworks | 705 | 1.4 ppb |
| Maribel Waterworks | 355 | 0.99 ppb |
| Kellnersville Waterworks | 301 | 3.5 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Kiel, 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 Kiel 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. More in what a past exceedance means today.