Water quality for ZIP code 61341
ZIP 61341 covers Marseilles and Seneca in LaSalle County, Illinois, one of 26 ZIP codes in the county. 172 active public water systems serve the county; 101 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 LaSalle County
36 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Four Star Campground Marseilles |
250 | 1 | 2.6 mi | |
| Seneca Mobile Homes LLC |
10 | 2 | 5.2 mi | |
| Seneca Seneca |
2,353 | 0 | 5.4 mi | |
| Country Acres MHP (la Salle County) |
222 | 1 | 6.4 mi | |
| IL Prairie Estate Sbdv Water Association |
78 | 0 | 7.1 mi | |
| Ottawa Ottawa |
18,097 | 3 | 7.5 mi | |
| Oaklane Sbdv |
63 | 1 | 8.0 mi | |
| Land and Wtr Assn |
83 | 2 | 8.3 mi | |
| Naplate Naplate |
465 | 2 | 8.4 mi | |
| Ottawa Estates MHP |
125 | 0 | 8.8 mi | |
| Grand Ridge Grand Ridge |
515 | 1 | 10.8 mi | |
| Sheridan Correctional Center |
1,670 | 2 | 11.3 mi | |
| North Utica North Utica |
1,323 | 3 | 16.7 mi | |
| Jons MHP |
92 | 3 | 18.0 mi | |
| IL American-Lake Holiday |
4,750 | 0 | 18.4 mi | |
| Countryside Estates MHP |
158 | 0 | 18.4 mi | |
| IL American-Streator Streator |
19,000 | 0 | 18.6 mi | |
| IL American-Leonore Leonore |
111 | 0 | 18.8 mi | |
| Leland Leland |
951 | 0 | 19.1 mi | |
| Oglesby Oglesby |
4,500 | 1 | 19.5 mi | |
| Jonesville Pwd |
243 | 1 | 19.8 mi | |
| Earlville Earlville |
1,613 | 0 | 20.0 mi | |
| Ilog Oglesby Mhp, LLC Oglesby |
88 | 0 | 20.2 mi | |
| LA Salle La Salle |
9,700 | 4 | 20.8 mi | |
| Mendota Estates MHP Mendota |
110 | 1 | 21.1 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, 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.
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 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.