Wisconsin · population 5,346
Lead pipes in Summit, WI
720 lead or galvanized lines to replace
Most of Summit (population 5,346) gets its water from Oconomowoc Waterworks. That system reported 715 lead and 5 galvanized-requiring-replacement service lines out of 7,119, with 0 more of unknown material.
10% of Oconomowoc Waterworks's service lines are lead or galvanized requiring replacement, about the same as the Wisconsin average (11%) and higher than the national average (3.1%).
- Lead 10%
- Galvanized (replace) <0.1%
- Unknown 0%
- Non-lead 90%
Latest lead test for Oconomowoc Waterworks (Jun 2023–Sep 2023): 6.8 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 Oconomowoc Waterworks.
Water systems serving Summit
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| Oconomowoc WaterworksMain system | 715 | 5 | 0 | 10% |
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 Summit
The counts above cover the whole water system. To see whether your line is lead, look up your address on Oconomowoc Waterworks'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
- Dousman18 lead + galv. lines
- Nashotah38 unknown
- Delafield26 unknown
- North Prairie547 unknown
- Merton10 lead + galv. lines
- Pewaukee village1 lead + galv. lines
- Pewaukee city118 unknown
- Waukesha cityno lead reported
Check another water system
Questions
Does Summit, WI have lead pipes?
Yes. Oconomowoc Waterworks, which serves Summit, reported 715 lead and 5 galvanized-requiring-replacement service lines, plus 0 of unknown material.
Who supplies water to Summit?
EPA's service area maps place most of Summit in Oconomowoc Waterworks's service area (PWSID WI2680227).
How do I check whether my Summit home has a lead service line?
Search your address on Oconomowoc Waterworks'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 Summit 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 Oconomowoc Waterworks whether your street is scheduled and whether it covers the private side.