Water quality in Dayton, Illinois
Dayton 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 |
|---|---|---|---|---|
| Land and Wtr Assn |
83 | 2 | 3.1 mi | |
| IL Prairie Estate Sbdv Water Association |
78 | 0 | 3.4 mi | |
| Ottawa Estates MHP |
125 | 0 | 3.6 mi | |
| Ottawa Ottawa |
18,097 | 3 | 3.7 mi | |
| Marseilles Marseilles |
5,061 | 4 | 6.9 mi | |
| Naplate Naplate |
465 | 2 | 7.1 mi | |
| Four Star Campground Marseilles |
250 | 1 | 8.7 mi | |
| Sheridan Correctional Center |
1,670 | 2 | 10.3 mi | |
| Grand Ridge Grand Ridge |
515 | 1 | 10.9 mi | |
| Seneca Mobile Homes LLC |
10 | 2 | 11.4 mi | |
| Seneca Seneca |
2,353 | 0 | 11.5 mi | |
| North Utica North Utica |
1,323 | 3 | 11.7 mi | |
| Country Acres MHP (la Salle County) |
222 | 1 | 12.4 mi | |
| Earlville Earlville |
1,613 | 0 | 14.9 mi | |
| Mendota Estates MHP Mendota |
110 | 1 | 15.0 mi | |
| Oglesby Oglesby |
4,500 | 1 | 15.1 mi | |
| Jonesville Pwd |
243 | 1 | 15.3 mi | |
| Leland Leland |
951 | 0 | 15.5 mi | |
| LA Salle La Salle |
9,700 | 4 | 15.6 mi | |
| Ilog Oglesby Mhp, LLC Oglesby |
88 | 0 | 15.9 mi | |
| IL American-Leonore Leonore |
111 | 0 | 16.9 mi | |
| IL American-Lake Holiday |
4,750 | 0 | 17.0 mi | |
| Peru Peru |
9,896 | 2 | 17.4 mi | |
| Countryside Estates MHP |
158 | 0 | 17.4 mi | |
| Lynnwood Water Corporation |
100 | 0 | 17.4 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 Dayton 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.