Lead pipes in Walworth County, Wisconsin
How many lead pipes are in Walworth County, WI?
Water systems based in Walworth County reported 2,107 lead service lines, 240 galvanized lines that need replacing and 6,127 lines of unknown material to EPA (Q3 2026). Delavan has the most, with 626 lead and galvanized lines.
Who pays in Wisconsin
Wisconsin lets each utility decide. Under a 2017 law, utilities can offer grants or loans to owners for the private side with Public Service Commission approval. The DNR gives municipalities principal forgiveness (money that does not have to be repaid) for private-side work, and since July 2025 state law also allows forgiving loans for lead line projects. Homeowners cannot apply to the DNR directly; the money flows through the city.
Every Walworth County water system with lead lines
Systems are grouped by the county EPA lists as their main service area. Some serve towns in neighboring counties too.
| Water system | Lead | Galv. | Unknown | Program |
|---|---|---|---|---|
| Delavan Delavan Waterworks | 626 | 0 | 1,244 | Not confirmed |
| Walworth Walworth Waterworks | 441 | 0 | 0 | Not confirmed |
| Lake Geneva Lake Geneva Utility Commission | 373 | 51 | 97 | Not confirmed |
| Elkhorn Elkhorn Waterworks | 308 | 2 | 1,615 | Not confirmed |
| Genoa City Genoa City Waterworks | 164 | 35 | 0 | Not confirmed |
| Whitewater Whitewater Waterworks | 179 | 3 | 0 | Not confirmed |
| East Troy East Troy Waterworks | 0 | 88 | 703 | Not confirmed |
| Sharon Sharon Waterworks | 12 | 58 | 271 | Not confirmed |
| Williams Bay Williams Bay Waterworks | 4 | 3 | 1,112 | Not confirmed |
| Fontana Fontana Water Utility | 0 | 0 | 1,085 | Not confirmed |
Systems over the new 10 ppb lead action level
Elkhorn (13 ppb, 2026-01 to 2026-06); Williams Bay (45 ppb, 2026-01 to 2026-06). See all systems over 10 ppb.
Common questions
How many lead pipes are in Walworth County, WI?
Water systems based in Walworth County reported 2,107 lead service lines, 240 galvanized lines that need replacing and 6,127 lines of unknown material to EPA (Q3 2026). Delavan has the most, with 626 lead and galvanized lines.
Who pays to replace lead service lines in Walworth County?
It depends on your water utility. Wisconsin lets each utility decide. We have not confirmed a homeowner program for a utility in this county yet, so ask your utility before you hire a contractor.
How do I find out if my house has a lead service line?
Look up your address on your water utility's service line inventory map, or check the pipe where it enters your home: lead is dull gray, soft, scratches to shiny silver, and a magnet won't stick. See our step-by-step guide.
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