Lead pipes in Rock County, Wisconsin
How many lead pipes are in Rock County, WI?
Water systems based in Rock County reported 2,209 lead service lines, 1,602 galvanized lines that need replacing and 12,172 lines of unknown material to EPA (Q3 2026). Beloit has the most, with 3,378 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.
Confirmed programs in Rock County
- Beloit: State grant for private-side work.
Every Rock 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 |
|---|---|---|---|---|
| Beloit City of Beloit | 1,955 | 1,423 | 10,078 | Replacing lines; ask about cost |
| Evansville Evansville Waterworks | 214 | 151 | 724 | Not confirmed |
| Milton Milton Waterworks | 31 | 23 | 777 | Not confirmed |
| Clinton Clinton Waterworks | 6 | 5 | 593 | Not confirmed |
| Janesville Janesville Water Utility | 3 | 0 | 0 | Not confirmed |
Common questions
How many lead pipes are in Rock County, WI?
Water systems based in Rock County reported 2,209 lead service lines, 1,602 galvanized lines that need replacing and 12,172 lines of unknown material to EPA (Q3 2026). Beloit has the most, with 3,378 lead and galvanized lines.
Who pays to replace lead service lines in Rock County?
It depends on your water utility. Wisconsin lets each utility decide. We have confirmed programs for 1 Rock County utility, listed on this page.
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.
Other Wisconsin counties
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