Wisconsin · population 66,428
Lead pipes in Janesville, WI
3 lead or galvanized lines to replace
Most of Janesville (population 66,428) gets its water from Janesville Water Utility. That system reported 3 lead and 0 galvanized-requiring-replacement service lines out of 23,777, with 0 more of unknown material.
<0.1% of Janesville Water Utility's service lines are lead or galvanized requiring replacement, lower than the Wisconsin average (11%) and lower than the national average (3.1%).
- Lead <0.1%
- Galvanized (replace) 0%
- Unknown 0%
- Non-lead 100%
Latest lead test for Janesville Water Utility (Jan 2026–Jun 2026): 2.4 ppb at the 90th percentile, against a 15 ppb federal action level. Full test history.
Compliance record: EPA lists no Lead and Copper Rule violations since 2015 for Janesville Water Utility.
Water systems serving Janesville
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| Janesville Water UtilityMain system | 3 | 0 | 0 | <0.1% |
| Rockvale MHPAlso serves parts of the city | 0 | 0 | 0 | 0% |
Matched from EPA water system service area boundaries and the cities each system reports serving. Edges of the city may be served by a neighboring system; your water bill names your utility.
Check your address in Janesville
The counts above cover the whole water system. To see whether your line is lead, look up your address on Janesville Water Utility's official inventory. Utilities had to make these public by October 16, 2024.
No map yet? Do the 2-minute scratch and magnet test.
Protect your drinking water
If your line is lead, galvanized or unknown, use a filter certified to NSF/ANSI 53 for lead for drinking, cooking and baby formula, and use only cold water.
Choosing a lead-certified filter · Testing your water · Replacement cost
Nearby cities
- Milton54 lead + galv. lines
- Edgerton709 unknown
- Clinton11 lead + galv. lines
- Evansville365 lead + galv. lines
- Whitewater182 lead + galv. lines
- Delavan626 lead + galv. lines
- Cambridge4 lead + galv. lines
- Walworth441 lead + galv. lines
Check another water system
Questions
Does Janesville, WI have lead pipes?
Yes. Janesville Water Utility, which serves Janesville, reported 3 lead and 0 galvanized-requiring-replacement service lines, plus 0 of unknown material.
Who supplies water to Janesville?
EPA's service area maps place most of Janesville in Janesville Water Utility's service area (PWSID WI1540127). Rockvale MHP also serves parts of the city or nearby areas.
How do I check whether my Janesville home has a lead service line?
Search your address on Janesville Water Utility's service line inventory map. You can also scratch the pipe where water enters your home: lead is soft, dull gray, scratches to shiny silver and doesn't attract a magnet.
When will lead pipes in Janesville be replaced?
EPA's Lead and Copper Rule Improvements require most systems to replace lead and galvanized-requiring-replacement lines by December 31, 2037. Ask Janesville Water Utility whether your street is scheduled and whether it covers the private side.