Water quality for ZIP code 53046
ZIP 53046 covers Lannon in Waukesha County, Wisconsin, one of 26 ZIP codes in the county. 589 active public water systems serve the county; 108 had an EPA violation in the past three years.
Most likely your provider
Your location is within the outer bounds of this system's EPA service area.
Other community water systems in Waukesha County
72 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Lannon Water Utility Lannon |
172 | 2 | 1.0 mi | |
| Menomonee Falls WW Groundwater Menomonee Falls |
1,796 | 0 | 1.8 mi | |
| Willow Springs MHP 2 & 3 Sussex |
446 | 0 | 2.1 mi | |
| Sussex Village Hall & Water Utility Sussex |
11,750 | 2 | 3.2 mi | |
| Country Court Subdivision Pewaukee |
45 | 0 | 4.0 mi | |
| Butler Waterworks Butler |
2,181 | 0 | 5.6 mi | |
| Pewaukee City Water and Sewer Utility Pewaukee |
8,671 | 2 | 6.6 mi | |
| Brookfield Water Utility Brookfield |
29,070 | 2 | 6.9 mi | |
| Pewaukee Village Waterworks Pewaukee |
8,166 | 2 | 7.9 mi | |
| Douglas Plaza South Elm Grove |
62 | 3 | 8.3 mi | |
| Squires Grove Elm Grove |
410 | 3 | 8.4 mi | |
| Marian Heights Subdivision Elm Grove |
400 | 1 | 8.4 mi | |
| Emerald Woods Condos Elm Grove |
150 | 2 | 8.4 mi | |
| Elm Grove Terrace Elm Grove |
75 | 0 | 8.4 mi | |
| Carriage Hills Condominiums Elm Grove |
50 | 4 | 8.4 mi | |
| Douglas Plaza North Elm Grove |
30 | 4 | 8.4 mi | |
| Town of Brookfield San Dist 4 Brookfield |
6,419 | 1 | 8.7 mi | |
| Country Aire Condos 4821 Hartland |
40 | 0 | 9.7 mi | |
| Country Aire Condos 4875 Hartland |
40 | 0 | 9.7 mi | |
| Country Aire Condos 4887 Hartland |
40 | 0 | 9.7 mi | |
| Hartland Waterworks Hartland |
9,212 | 0 | 9.9 mi | |
| Lake Country Apartments Delafield |
84 | 2 | 10.6 mi | |
| Evergreens North Lake |
40 | 2 | 10.8 mi | |
| Country Aire Condos 4835 Hartland |
40 | 0 | 10.8 mi | |
| Schoenstatt Sisters of Mary Waukesha |
80 | 0 | 11.1 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, the county this ZIP code lies in, nearest to the ZIP code's centre 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.
ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA 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.