Water quality for ZIP code 60478
ZIP 60478 covers Country Club Hills, Oak Forest, Markham, Tinley Park, and Hazel Crest 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 |
|---|---|---|---|---|
| Hazel Crest Hazel Crest |
13,792 | 2 | 1.9 mi | |
| Flossmoor Flossmoor |
9,371 | 1 | 2.8 mi | |
| Oak Forest Oak Forest |
27,478 | 2 | 2.9 mi | |
| Markham Markham |
12,500 | 4 | 3.1 mi | |
| Homewood Homewood |
19,463 | 2 | 3.4 mi | |
| Olympia Fields Olympia Fields |
4,922 | 3 | 3.6 mi | |
| Matteson Matteson |
18,293 | 5 | 3.8 mi | |
| East Hazel Crest East Hazel Crest |
1,500 | 1 | 4.0 mi | |
| Tinley Park Tinley Park |
56,703 | 3 | 4.2 mi | |
| Midlothian Midlothian |
14,819 | 1 | 4.3 mi | |
| Harvey Harvey |
25,000 | 2 | 4.9 mi | |
| Posen Posen |
5,331 | 3 | 5.0 mi | |
| Aqua Illinois-Timber Ridge Matteson |
2,322 | 0 | 5.4 mi | |
| Dixmoor Dixmoor |
2,973 | 5 | 5.5 mi | |
| Chicago Heights Chicago Heights |
26,184 | 2 | 5.5 mi | |
| Robbins Robbins |
5,415 | 6 | 5.6 mi | |
| Crestwood Crestwood |
10,826 | 2 | 5.7 mi | |
| Richton Park Richton Park |
12,504 | 5 | 5.7 mi | |
| Park Forest Park Forest |
21,687 | 1 | 5.8 mi | |
| Thornton Thornton |
2,386 | 2 | 5.9 mi | |
| Glenwood Glenwood |
8,956 | 3 | 5.9 mi | |
| Phoenix Phoenix |
1,994 | 4 | 5.9 mi | |
| IL American-Fernway Westhaven |
5,521 | 0 | 6.3 mi | |
| South Holland South Holland |
22,000 | 1 | 6.8 mi | |
| Blue Island Blue Island |
21,494 | 1 | 6.9 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.