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Not health advice. Contact your local water utility for concerns.
Data from EPA Water Quality Reports. For official information, contact your water utility or health department.
Compare water quality across 18 counties in Kansas
18 counties ranked by average water quality score
| Rank | County | Avg Score | Grade | Cities | Population | Score Range |
|---|---|---|---|---|---|---|
| 1 | Riley County | 100 | A | 1 | 54,763 | 100 - 100 |
| 2 | Leavenworth County | 100 | A | 1 | 38,757 | 100 - 100 |
| 3 | Harvey County | 100 | A | 1 | 18,433 | 100 - 100 |
| 4 | Sedgwick County | 99 | A | 2 | 421,112 | 98 - 100 |
| 5 | Crawford County | 99 | A | 1 | 20,738 | 99 - 99 |
| 6 | Seward County | 99 | A | 1 | 19,640 | 99 - 99 |
| 7 | Douglas County | 96 | A | 1 | 95,256 | 96 - 96 |
| 8 | Wyandotte County | 95 | A | 1 | 152,960 | 95 - 95 |
| 9 | Johnson County | 94 | A | 2 | 166,956 | 89 - 98 |
| 10 | Shawnee County | 94 | A | 1 | 125,963 | 94 - 94 |
| 11 | Saline County | 94 | A | 1 | 46,481 | 94 - 94 |
| 12 | Ellis County | 94 | A | 1 | 21,040 | 94 - 94 |
| 13 | Reno County | 89 | B | 1 | 39,712 | 89 - 89 |
| 14 | Finney County | 80 | B | 1 | 35,126 | 80 - 80 |
| 15 | Lyon County | 80 | B | 1 | 24,009 | 80 - 80 |
| 16 | Ford County | 75 | C | 1 | 27,104 | 75 - 75 |
| 17 | Barton County | 74 | C | 1 | 14,580 | 74 - 74 |
| 18 | Geary County | 55 | F | 1 | 19,167 | 55 - 55 |
2 cities • 421,112 residents
2 cities • 166,956 residents
See all 18 counties in the ranking table above
Our county-level water quality analysis aggregates data from municipal water systems across Kansas. Each county's score represents the average water quality across all analyzed cities within that county, weighted by population served.
With 18 counties and 20 cities analyzed, this data helps residents understand regional water quality patterns in Kansas. County scores range from 55/100 to 100/100, reflecting the diversity of water sources and treatment infrastructure across the state.
Currently, 1 counties in Kansas have average scores below 70, indicating potential water quality concerns. Residents in these areas should review their city's specific report and consider water filtration options.