Kansas tap water
3 of 102 Kansas water systems with full PFAS testing (3%) averaged above a 2024 federal PFAS level at one or more sampling points.
- 853 active community water systems in the EPA file; 87 serve 3,300+ people and have a full PFAS set.
- 140 systems had at least one health-based violation since 2021-10-26.
- 1 systems report a lead 90th percentile above 15 ppb (some results are old; check each system page).
Largest systems
| System | People served | PFAS above a 2024 level? | Health-based violations since 2021-10-26 |
|---|---|---|---|
| Water District 1 of Johnson CO | 490,000 | No | 0 |
| Wichita, City of | 395,699 | No | 0 |
| Kansas City Board of Public Utilities | 152,960 | No | 0 |
| Olathe, City of | 143,014 | No | 0 |
| Topeka, City of | 125,963 | No | 0 |
| Lawrence, City of | 95,256 | No | 0 |
| Manhattan, City of | 54,763 | No | 0 |
| Salina, City of | 46,481 | No | 0 |
Counties
All 8 utilities with a page in Kansas
- Kansas City Board of Public Utilities 152,960
- Lawrence, City of 95,256
- Manhattan, City of 54,763
- Olathe, City of 143,014
- Salina, City of 46,481
- Topeka, City of 125,963
- Water District 1 of Johnson CO 490,000
- Wichita, City of 395,699
Why not "the state's water quality"? You drink from one utility, not a state. Rollups count systems, not people, so one large utility counts the same as a small one. Use the system pages for your actual water.
Not medical or legal advice. UCMR 5 results are screening data, not compliance determinations.
Sources and freshness
Public-water-system facts, violations and lead/copper results: EPA ECHO SDWA download (SDWIS snapshot 2026-10-13). PFAS and lithium results: EPA UCMR 5 final data (sampling 2023–2025). Both are U.S. government works, downloaded 2026-10-26. Numbers are computed by the published method; the same fields are in the open data files.