Water quality for ZIP code 60091
ZIP 60091 covers Wilmette in Cook County, Illinois, one of 167 ZIP codes in the county. 423 active public water systems serve the county; 220 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 Cook County
162 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Kenilworth Kenilworth |
2,514 | 1 | 0.8 mi | |
| Winnetka Winnetka |
12,475 | 0 | 2.1 mi | |
| Evanston Evanston |
74,486 | 0 | 2.6 mi | |
| Skokie Skokie |
66,422 | 4 | 3.1 mi | |
| Northfield Northfield |
5,751 | 1 | 3.5 mi | |
| Golf Golf |
497 | 0 | 3.8 mi | |
| Morton Grove Morton Grove |
25,297 | 3 | 4.3 mi | |
| Glencoe Forest Park |
8,849 | 0 | 4.4 mi | |
| Lincolnwood Lincolnwood |
13,463 | 1 | 5.1 mi | |
| Glenview Glenview |
47,856 | 2 | 5.2 mi | |
| Morton Grove Niles Water Commission Niles |
0 | 0 | 5.7 mi | |
| Niles Niles |
29,350 | 1 | 5.8 mi | |
| Aqua Illinois-North Maine Utilities |
30,043 | 1 | 6.8 mi | |
| Harbor Point Estates MHP Northbrook |
1,064 | 4 | 6.8 mi | |
| Northbrook Northbrook |
34,200 | 2 | 6.9 mi | |
| Park Ridge Park Ridge |
39,800 | 1 | 7.6 mi | |
| Mission Brook SD |
2,852 | 1 | 8.1 mi | |
| IL American-Moreland |
445 | 0 | 8.7 mi | |
| Glen Eden Estates Homeowners Association |
312 | 3 | 8.7 mi | |
| Harwood Heights Harwood Heights |
9,065 | 0 | 8.8 mi | |
| Aqua Illinois-Summerdale Norridge |
145 | 2 | 9.0 mi | |
| Norridge Norridge |
15,251 | 0 | 9.5 mi | |
| IL American-Chicago Suburban |
11,187 | 0 | 9.5 mi | |
| Des Plaines Des Plaines |
60,675 | 3 | 9.7 mi | |
| Buckhorn Ranch Estates MHP Des Plaines |
702 | 0 | 9.7 mi |
Non-community systems in Cook County (260: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Cook 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 or the centre of the town EPA lists the system as serving, from OpenStreetMap.
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.