Water quality in St. John, Indiana
St. John is in Lake County. 111 active public water systems serve the county; 73 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 Lake County
29 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Aqua Indiana Water Company |
1,350 | 1 | 1.6 mi | |
| Cedar Gardens MHP Cedar Lake |
34 | 1 | 2.8 mi | |
| Cedar Lake Mobile Home Park Cedar Lake |
200 | 0 | 4.3 mi | |
| Cedar Lake Bible Conference Grounds Cedar Lake |
150 | 0 | 4.5 mi | |
| Schererville Water Department Schererville |
30,000 | 1 | 4.6 mi | |
| Cedar Lake Water Works Cedar Lake |
4,600 | 8 | 4.6 mi | |
| Lakeshore Subdivision Association, Inc. Cedar Lake |
265 | 2 | 5.0 mi | |
| Dyer Water Department Dyer |
16,800 | 0 | 5.0 mi | |
| Sunset Harbor Condominiums Cedar Lake |
40 | 1 | 5.1 mi | |
| Cedar Lake Robins Nest Schererville |
950 | 6 | 5.6 mi | |
| Crown Point Water Works Crown Point |
30,000 | 1 | 7.1 mi | |
| Noble Oaks Subdivision Water Association Cedar Lake |
70 | 0 | 7.1 mi | |
| Bremerton Mobile Home Park Griffith |
79 | 1 | 7.8 mi | |
| Griffith Water Department Griffith |
16,893 | 2 | 7.9 mi | |
| Fairway Regional Water District Cedar Lake |
210 | 3 | 8.1 mi | |
| Munster Water Company Munster |
23,894 | 2 | 8.3 mi | |
| Highland Water Works Highland (highlands) |
23,984 | 0 | 8.5 mi | |
| Crossings Mobile Home Park Merrillville |
100 | 2 | 8.7 mi | |
| Rockwell Shores Apartments Merrillville |
45 | 1 | 9.8 mi | |
| Indiana American Water Lowell Lowell |
11,908 | 0 | 10.3 mi | |
| Oakwood Mobile Home Park Lowell |
45 | 1 | 12.4 mi | |
| Hammond Water Works Department Hammond |
78,384 | 1 | 12.6 mi | |
| Apple Valley Utilities, Inc. Hebron |
712 | 0 | 12.8 mi | |
| Cuii Twin Lakes Crown Point |
8,000 | 1 | 13.3 mi | |
| New Chicago Water Works Hobart |
5,500 | 0 | 14.4 mi |
Non-community systems in Lake County (81: 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 St. John 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 Indiana 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.