Water quality in Long Lake, Illinois
Long Lake is in Lake County. 535 active public water systems serve the county; 213 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Lake County
102 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Tanneron Bay Homeowners Association |
256 | 1 | 1.0 mi | |
| Cambridge Courts MHP Northbrook |
658 | 2 | 1.1 mi | |
| Duck Lake Well Owners Association |
141 | 4 | 1.3 mi | |
| Round Lake Heights Round Lake Heights |
2,622 | 0 | 1.5 mi | |
| Round Lake Beach Round Lake Beach |
27,200 | 2 | 2.3 mi | |
| Hilldale Manor Subdivision |
414 | 0 | 2.4 mi | |
| Round Lake Round Lake |
18,430 | 2 | 2.5 mi | |
| Chain-O-Lakes MHP |
84 | 0 | 2.6 mi | |
| Round Lake Park Round Lake Park |
4,900 | 4 | 2.8 mi | |
| Fox Lake Hills Subdivision Lake CO PW |
2,628 | 1 | 3.0 mi | |
| Lcpw Highland Lake Subdivision |
414 | 0 | 3.1 mi | |
| Fox Lake Fox Lake |
11,780 | 5 | 3.2 mi | |
| Volo Volo |
6,629 | 2 | 3.4 mi | |
| Hainesville Hainesville |
3,528 | 1 | 3.5 mi | |
| Lake Villa Lake Villa |
8,829 | 1 | 3.9 mi | |
| Aqua Illinois-Rockwell |
1,762 | 1 | 3.9 mi | |
| Ports Sullivan Lake Owners Association |
293 | 1 | 3.9 mi | |
| Lakemoor Lakemoor |
2,720 | 3 | 4.4 mi | |
| IL American-Harbor Ridge |
1,064 | 0 | 4.7 mi | |
| Grayslake Grays Lake |
21,248 | 0 | 5.0 mi | |
| Saddlebrook Farms |
2,558 | 1 | 5.2 mi | |
| Lindenhurst Lindenhurst |
14,500 | 3 | 6.0 mi | |
| Wauconda Wauconda |
15,349 | 1 | 7.0 mi | |
| Aqua Illinois-Ivanhoe |
650 | 0 | 7.1 mi | |
| Wildwood Subdivision Lake CO PW |
14,073 | 1 | 7.5 mi |
Non-community systems in Lake County (432: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Lake County, nearest to Long Lake 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 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.