Water quality in Diamond, Illinois
Diamond is in Grundy County. 63 active public water systems serve the county; 35 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 Grundy County
19 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Burt Estates MHC Diamond |
543 | 1 | 0.3 mi | |
| Coal City Coal City |
5,845 | 4 | 1.6 mi | |
| Carbon Hill Carbon Hill |
370 | 1 | 2.4 mi | |
| Prairie Oaks Ests Homeowners Assn Coal City |
107 | 3 | 2.9 mi | |
| Braceville Braceville |
800 | 6 | 4.6 mi | |
| Bookwalter Woods MHP |
389 | 1 | 5.5 mi | |
| Gardner Gardner |
1,361 | 0 | 7.7 mi | |
| South Wilmington South Wilmington |
710 | 4 | 8.0 mi | |
| Mazon Mazon |
994 | 1 | 9.5 mi | |
| Minooka Minooka |
12,800 | 0 | 10.4 mi | |
| IL American-Ridgecrest |
203 | 0 | 10.6 mi | |
| Morris Morris |
14,775 | 1 | 11.1 mi | |
| Lisbon North, Inc. |
25 | 1 | 11.5 mi | |
| Shady Oaks MHP |
912 | 3 | 11.7 mi | |
| Heatherfield Subdivision |
90 | 2 | 12.3 mi | |
| IL American-Nettle Creek |
317 | 0 | 13.0 mi | |
| Kinsman Kinsman |
99 | 3 | 17.7 mi | |
| Ridgecrest North Subdivision |
60 | 3 | — | |
| Hawthorn Estates Subdivision |
49 | 1 | — |
Non-community systems in Grundy County (43: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Grundy County, nearest to Diamond 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.