Water quality in Mendota, Illinois
Mendota is in LaSalle County. 172 active public water systems serve the county; 101 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in LaSalle County
36 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Mendota Estates MHP Mendota |
110 | 1 | 3.0 mi | |
| Earlville Earlville |
1,613 | 0 | 10.3 mi | |
| LA Salle La Salle |
9,700 | 4 | 11.5 mi | |
| Peru Peru |
9,896 | 2 | 11.6 mi | |
| North Utica North Utica |
1,323 | 3 | 12.4 mi | |
| Lynnwood Water Corporation |
100 | 0 | 14.4 mi | |
| Jonesville Pwd |
243 | 1 | 14.8 mi | |
| Oglesby Oglesby |
4,500 | 1 | 15.1 mi | |
| Ilog Oglesby Mhp, LLC Oglesby |
88 | 0 | 15.2 mi | |
| Ottawa Estates MHP |
125 | 0 | 15.6 mi | |
| Land and Wtr Assn |
83 | 2 | 15.9 mi | |
| Oaklane Sbdv |
63 | 1 | 16.1 mi | |
| Leland Leland |
951 | 0 | 16.7 mi | |
| IL Prairie Estate Sbdv Water Association |
78 | 0 | 17.3 mi | |
| Ottawa Ottawa |
18,097 | 3 | 17.4 mi | |
| Cedar Point Water Company |
266 | 1 | 17.5 mi | |
| Naplate Naplate |
465 | 2 | 20.3 mi | |
| Tonica Tonica |
705 | 0 | 20.7 mi | |
| Sheridan Correctional Center |
1,670 | 2 | 20.9 mi | |
| IL American-Lake Holiday |
4,750 | 0 | 23.0 mi | |
| IL American-Leonore Leonore |
111 | 0 | 23.1 mi | |
| Grand Ridge Grand Ridge |
515 | 1 | 23.5 mi | |
| Countryside Estates MHP |
158 | 0 | 23.9 mi | |
| Marseilles Marseilles |
5,061 | 4 | 24.1 mi | |
| Jons MHP |
92 | 3 | 25.1 mi |
Non-community systems in LaSalle County (135: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to LaSalle County, nearest to Mendota 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.
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 Illinois 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.