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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 | Saline County | 97 | A+ | 1 | 46,994 | 97 - 97 |
| 2 | Reno County | 94 | A | 1 | 40,006 | 94 - 94 |
| 3 | Geary County | 93 | A | 1 | 22,932 | 93 - 93 |
| 4 | Wyandotte County | 93 | A | 1 | 156,607 | 93 - 93 |
| 5 | Riley County | 92 | A | 1 | 54,100 | 92 - 92 |
| 6 | Sedgwick County | 89 | A- | 2 | 423,157 | 84 - 93 |
| 7 | Seward County | 88 | A- | 1 | 19,666 | 88 - 88 |
| 8 | Barton County | 85 | A- | 1 | 15,224 | 85 - 85 |
| 9 | Ford County | 84 | B+ | 1 | 27,788 | 84 - 84 |
| 10 | Harvey County | 81 | B+ | 1 | 18,602 | 81 - 81 |
| 11 | Crawford County | 81 | B+ | 1 | 20,216 | 81 - 81 |
| 12 | Finney County | 79 | B | 1 | 26,403 | 79 - 79 |
| 13 | Lyon County | 77 | B | 1 | 24,239 | 77 - 77 |
| 14 | Johnson County | 73 | B- | 7 | 544,521 | 48 - 91 |
| 15 | Ellis County | 73 | B- | 1 | 21,116 | 73 - 73 |
| 16 | Douglas County | 70 | B- | 1 | 98,193 | 70 - 70 |
| 17 | Leavenworth County | 67 | C+ | 1 | 36,210 | 67 - 67 |
| 18 | Shawnee County | 65 | C+ | 1 | 126,587 | 65 - 65 |
1 cities • 46,994 residents
1 cities • 40,006 residents
1 cities • 22,932 residents
1 cities • 156,607 residents
1 cities • 54,100 residents
2 cities • 423,157 residents
1 cities • 19,666 residents
1 cities • 15,224 residents
1 cities • 27,788 residents
1 cities • 18,602 residents
1 cities • 20,216 residents
1 cities • 26,403 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 25 cities analyzed, this data helps residents understand regional water quality patterns in Kansas. County scores range from 48/100 to 97/100, reflecting the diversity of water sources and treatment infrastructure across the state.
Currently, 2 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.