Sturgeon Bay Waterworks, WI
Exceeded the action level in the past
Latest 90th-percentile lead: 3.6 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. 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 Sturgeon Bay Waterworks
Sturgeon Bay Waterworks serves about 9,700 people through 3,592 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 Door County, Wisconsin. EPA system ID: WI4150526. Ask the utility on your bill for your address in their service line inventory.
Every lead result on file
Against the period ending 2020 (3.6 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Sturgeon Bay Waterworks is 23 ppb across 6 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 3.6 ppb |
| 2020 | 3.6 ppb |
| 2019 | 4.3 ppb |
| 2018 | 9.1 ppb |
| 2018 | 4.8 ppb |
| 2017 | 23 ppb over 15 |
How Sturgeon Bay 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. Sturgeon Bay Waterworks's 3.6 ppb sits at the 81st percentile in Wisconsin and the 86th nationally (higher means more lead).
Other water systems in Door County
5 other systems share Door County; 2 of them have a higher latest lead result than Sturgeon Bay Waterworks. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Sister Bay Waterworks | 1,000 | 6.1 ppb |
| Oaks The | 135 | 0.95 ppb |
| Heritage Lake Resort | 130 | 13 ppb |
| Maplewood Sanitary Dist 1 | 122 | 0.21 ppb |
| Cottage Glen Condominiums | 52 | 1.25 ppb |
Next steps for Sturgeon Bay, WI
Test your own tap with a certified lab first-draw sample; Sturgeon Bay, 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 Sturgeon Bay 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. Why an old exceedance still matters: over the limit before, under it now.