Water quality in Merton, Wisconsin
Merton is in Waukesha County. 589 active public water systems serve the county; 108 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Waukesha County
72 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Country Aire Condos 4875 Hartland |
40 | 0 | 3.2 mi | |
| Country Aire Condos 4887 Hartland |
40 | 0 | 3.2 mi | |
| Evergreens North Lake |
40 | 2 | 3.3 mi | |
| Hartland Waterworks Hartland |
9,212 | 0 | 3.5 mi | |
| Country Aire Condos 4835 Hartland |
40 | 0 | 3.9 mi | |
| Sussex Village Hall & Water Utility Sussex |
11,750 | 2 | 4.7 mi | |
| Pewaukee Village Waterworks Pewaukee |
8,166 | 2 | 5.5 mi | |
| Parquelynn Village Nashotah |
450 | 0 | 6.0 mi | |
| Willow Springs MHP 2 & 3 Sussex |
446 | 0 | 6.1 mi | |
| Muskego Lake Aire Apartments Muskego |
35 | 0 | 6.6 mi | |
| Delafield Lakes 402 Delafield |
40 | 0 | 6.7 mi | |
| Delafield Lakes 404 Delafield |
40 | 0 | 6.7 mi | |
| Delafield Woods 411 Delafield |
40 | 0 | 6.7 mi | |
| Delafield Woods 828 Delafield |
40 | 0 | 6.7 mi | |
| Quail Hollow Condos Delafield |
30 | 2 | 6.7 mi | |
| Wells ST Station 425 West Delafield |
25 | 1 | 6.7 mi | |
| Wells ST Station 435 East Delafield |
25 | 1 | 6.7 mi | |
| Lake Drive Water Trust Oconomowoc |
500 | 2 | 6.9 mi | |
| Pewaukee City Water and Sewer Utility Pewaukee |
8,671 | 2 | 6.9 mi | |
| Mission Lakes II Okauchee |
68 | 0 | 6.9 mi | |
| Arbors Delafield |
280 | 2 | 6.9 mi | |
| Delafield Square Delafield |
587 | 0 | 7.0 mi | |
| Country Court Subdivision Pewaukee |
45 | 0 | 7.1 mi | |
| ST Johns Northwestern Academies Delafield |
340 | 2 | 7.2 mi | |
| Nashotah House Delafield |
350 | 1 | 7.3 mi |
Non-community systems in Waukesha County (516: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Waukesha County, nearest to Merton first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau place files.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 files.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Wisconsin records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.