Safest Drinking Water in Indiana 2026
Indiana has 5 public water systems serving 1,658,293 people. The safest system is Indiana American Water - Northwest in Greenwood with a score of 100/100.
Top 5 Water Systems in Indiana
| # | Water System | City | Pop. Served | Source | Violations | Score |
|---|---|---|---|---|---|---|
| 1 | Indiana American Water - Northwest | Greenwood | 210,510 | Surface water | 0 | A (100) |
| 2 | South Bend Water Works | South Bend | 115,000 | Ground water | 0 | A (100) |
| 3 | Evansville Water Utility | Evansville | 182,444 | Surface water | 0 | A (94) |
| 4 | Citizens Water - Indianapolis | Indianapolis | 880,345 | Surface water | 0 | B (87) |
| 5 | Fort Wayne - 3 Rivers Filtration Plant | Fort Wayne | 269,994 | Surface water | 3 | F (50) |
Water quality data for Indiana is sourced from the EPA Safe Drinking Water Information System (SDWIS), which tracks compliance for all public water systems.
Frequently Asked Questions
Indiana American Water - Northwest in Greenwood has the highest Water Safety Score in Indiana at 100/100 (Grade A), serving 210,510 people.
Indiana has 5 public water systems serving 1,658,293 people. The average Water Safety Score is 86/100.
The Water Safety Score (0-100) is based on health violations (40%), contaminant exceedances (30%), enforcement history (20%), and monitoring violations (10%). Higher scores mean cleaner, safer water.
Water Safety Score: health violations (40%), contaminant exceedances (30%), enforcement history (20%), monitoring violations (10%).