103 public water systems in Kansas were sampled in EPA's UCMR 5 programme (2023–2025); we show six PFAS and lithium. Read 2026-10-31.
6 of 103 systems had at least one sample above a 2024 federal limit; 79 had at least one PFAS found above the reporting level; 24 had none found above the reporting level.
A single sample above a 2024 limit is a measurement, not a violation. Compliance is judged on running yearly averages, and water systems have until 2029 to meet the limits. On 20 May 2026 EPA proposed giving qualifying systems until 2031 for PFOA and PFOS and removing the limits for PFHxS, PFNA and HFPO-DA; those proposals were not final when we last checked (5 Nov 2026). Counts are per system, not per person; population figures are available only for systems serving more than 25,000 people (about 1,741,032 people across those systems here). UCMR 5 was a one-time national monitoring programme (2023–2025). The results are a snapshot at the system's entry points or taps on the sample dates, not a continuous measurement and not a compliance record.
| System | People served | UCMR 5 result |
|---|---|---|
| Water District No. 1 of Johnson County Water District 1 of Johnson Co | 490,000 | None detected (below the reporting level) |
| Wichita Wichita, City of | 395,699 | None detected (below the reporting level) |
Pages for these are being added in stages. The data for all 103 systems is in the public dataset.
| System | People served | UCMR 5 result |
|---|---|---|
| Kansas City Board of Public Utilities Kansas City Board of Public Utilities | 152,960 | None detected (below the reporting level) |
| Olathe, City of Olathe, City of | 143,014 | None detected (below the reporting level) |
| Topeka, City of Topeka, City of | 125,963 | None detected (below the reporting level) |
| Lawrence, City of Lawrence, City of | 95,256 | Detected, below the 2024 limit |
| Manhattan, City of Manhattan, City of | 54,763 | None detected (below the reporting level) |
| Salina, City of Salina, City of | 46,481 | Detected, below the 2024 limit |
| Hutchinson, City of Hutchinson, City of | 39,712 | None detected (below the reporting level) |
| Leavenworth Water Department Leavenworth Water Department | 38,757 | None detected (below the reporting level) |
| Frusi Water Treatment Plant Frusi Water Treatment Plant | 35,784 | Above the 2024 limit in at least one sample |
| Garden City, City of Garden City, City of | 35,126 | None detected (below the reporting level) |
| University of Kansas University of Kansas | 35,000 | None detected (below the reporting level) |
| Dodge City, City of Dodge City, City of | 27,104 | Above the 2024 limit in at least one sample |
| El Paso Water Company El Paso Water Company | 25,413 | None detected (below the reporting level) |
| Gas City, City of Gas City, City of | — | None detected (below the reporting level) |
| Iola, City of Iola, City of | — | None detected (below the reporting level) |
| Moran, City of Moran, City of | — | None detected (below the reporting level) |
| Atchison, City of Atchison, City of | — | None detected (below the reporting level) |
| Atchison Co Rwd 5c Atchison Co Rwd 5c | — | None detected (below the reporting level) |
| Medicine Lodge, City of Medicine Lodge, City of | — | None detected (below the reporting level) |
| Great Bend, City of Great Bend, City of | — | Above the 2024 limit in at least one sample |
| Bourbon Co Rwd 2c Bourbon Co Rwd 2c | — | None detected (below the reporting level) |
| Fort Scott, City of Fort Scott, City of | — | None detected (below the reporting level) |
| Augusta, City of Augusta, City of | — | None detected (below the reporting level) |
| El Dorado, City of El Dorado, City of | — | None detected (below the reporting level) |
| Rose Hill, City of Rose Hill, City of | — | None detected (below the reporting level) |