Clay County tap water
0 of 11 water systems serving Clay County with full PFAS testing averaged above a 2024 federal PFAS level at one or more sampling points.
- 22 community water systems list this county as served; 10 serve 3,300+ people with full PFAS testing.
- 1 had a health-based violation since 2021-10-26.
Largest systems serving this county
| System | Source | People served (whole system) | PFAS above a 2024 level? | Violations since 2021-10-26 |
|---|---|---|---|---|
| Kansas City PWS | Surface water | 553,295 | No | 0 |
| Liberty PWS | Groundwater | 30,800 | No | 0 |
| Gladstone PWS | Groundwater | 27,000 | No | 0 |
| Kearney PWS | Purchased surface water | 11,500 | No | 0 |
| Excelsior Springs PWS | Groundwater | 11,084 | No | 0 |
| Smithville PWS | Surface water | 10,885 | No | 0 |
| Ray County Cons Pwsd 2 | Groundwater | 9,360 | No | 0 |
| Clay County Pwsd 6 | Purchased surface water | 4,912 | No | 0 |
| North Kansas City PWS | Groundwater | 4,500 | No | 0 |
| Clay County Pwsd 3 | Groundwater | 3,447 | No | 0 |
Which one is yours? A county usually has several utilities. Your bill or your utility's annual water-quality report names yours. Population is for the whole system, which can cross county lines.
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.