Lomira Waterworks, WI
Lead detected, under the action levels
Latest 90th-percentile lead: 8.2 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.
Who runs the water here
Lomira Waterworks serves about 2,701 people through 1,000 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 Dodge County, Wisconsin. EPA system ID: WI1140151. Ask the utility on your bill for your address in their service line inventory.
Every lead result on file
That is up 6 ppb from 2.2 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for Lomira Waterworks is 8.2 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 8.2 ppb |
| 2020 | 2.2 ppb |
| 2017 | 2.4 ppb |
How Lomira 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. Lomira Waterworks's 8.2 ppb sits at the 96th percentile in Wisconsin and the 96th nationally (higher means more lead).
Other water systems in Dodge County
22 other systems share Dodge County; 1 of them has a higher latest lead result than Lomira Waterworks. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Beaver Dam Water Utility | 16,200 | 11.3 ppb |
| Waupun Utilities | 8,056 | 1.2 ppb |
| Mayville Waterworks | 5,112 | 3.3 ppb |
| Waupun Correctional Inst | 3,706 | 0.87 ppb |
| Horicon Waterworks | 3,682 | 3.2 ppb |
| Juneau Waterworks | 2,627 | 2.7 ppb |
| Fox Lake Correctional Institution | 1,850 | 0 (not detected) |
| Fox Lake Waterworks | 1,610 | 0.79 ppb |
| Theresa Waterworks | 1,262 | 0.67 ppb |
| Hustisford Waterworks | 1,063 | 0.37 ppb |
Next steps for Lomira, WI
Test your own tap with a certified lab first-draw sample; Lomira, 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 Lomira 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.