Safest Drinking Water in Kansas 2026
Kansas has 5 public water systems serving 1,299,636 people. The safest system is Water District 1 of Johnson Co in Kansas City with a score of 100/100.
Top 5 Water Systems in Kansas
| # | Water System | City | Pop. Served | Source | Violations | Score |
|---|---|---|---|---|---|---|
| 1 | Water District 1 of Johnson Co | Kansas City | 482,000 | Surface water | 0 | A (100) |
| 2 | Wichita, City Of | Wichita | 395,699 | Surface water | 0 | A (93) |
| 3 | Kansas City Board of Public Utilities | Kansas City | 152,960 | Ground water | 0 | B (82) |
| 4 | Olathe, City Of | Olathe | 143,014 | Surface water | 0 | B (80) |
| 5 | Topeka, City Of | Topeka | 125,963 | Surface water | 1 | D (64) |
Water quality data for Kansas is sourced from the EPA Safe Drinking Water Information System (SDWIS), which tracks compliance for all public water systems.
Frequently Asked Questions
Water District 1 of Johnson Co in Kansas City has the highest Water Safety Score in Kansas at 100/100 (Grade A), serving 482,000 people.
Kansas has 5 public water systems serving 1,299,636 people. The average Water Safety Score is 84/100.
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%).