- PWSID
- KS2009104
- State
- Kansas
- System type
- community water system (CWS)
- Population served
- 6,457
- City
- Gardner
- Counties
- Johnson County, Miami County
- Primary source water
- surface water (purchased)
- UCMR 5 sampling
- 2025-02-10 to 2025-11-18 · 3 entry point(s) · water types: GU;SW
- Service-area boundary
- authoritative
Other PFAS detected highest single result
Other PFAS detected worst entry-point average
Open on the Kansas map · All Kansas systems · All results
These are monitoring results collected under EPA's Fifth Unregulated Contaminant Monitoring Rule (UCMR 5) at entry points, where treated water enters the distribution system; they are not tap-water samples. They are not compliance determinations: compliance with EPA's 2024 PFAS limits is judged on running annual averages of compliance monitoring, required from 2029, so a single UCMR 5 result at or above a limit is not a violation. “< MRL” means the compound was not quantified at EPA's minimum reporting level; it does not mean zero.
Water purchased from
- New Century Air Center (KS2009107)
Seller not monitored under UCMR 5. - Water District 1 Of Johnson Co (KS2009110)
Seller's highest results: PFOA <MRL · PFOS <MRL · HI 0 · detected: PFBA - Miami Co Rwd 2 (KS2012101)
Seller's highest results: PFOA <MRL · PFOS <MRL · HI 0 · detected: PFBA - Olathe, City Of (KS2009115)
Seller's highest results: PFOA <MRL · PFOS <MRL · HI 0
Seller results are the seller's own entry-point samples, not measurements of this system's water. This system's own samples (below) may reflect purchased water, its own sources, or both.
Compared with EPA's 2024 values
| Highest single result | Worst entry-point average* | Limit | |
|---|---|---|---|
| PFOA (ppt) | <MRL | 0 | 4 |
| PFOS (ppt) | <MRL | 0 | 4 |
| Hazard Index | 0 | 0 | 1.0† |
“<MRL” = every result for the compound was below its reporting limit. * Mean of all samples at each entry point with non-detects = 0 (EPA compliance convention; the Hazard Index also uses non-detects = 0); a screening comparison, not a formal running annual average. † Rescission proposed May 2026. PFOA/PFOS MCL 4 ppt (2024 NPDWR, in effect). PFHxS, PFNA, HFPO-DA (10 ppt each) and the Hazard Index (1.0) are 2024 NPDWR values; EPA proposed rescinding them on 18 May 2026 (comment period closed 20 Jul 2026).
No Kansas PFAS drinking-water standard in effect or proposed as of 2026-10-17: No state PFAS drinking-water standard; follows federal NPDWR (BCLP state survey, Jan 2026).
Sampling history
Sampled 2025-02-10 to 2025-11-18 · 3 entry point(s) · water types: GU;SW · 15 sampling visits. PFAS in ppt (ng/L).
| Date | Entry point | Event | PFOA | PFOS | HI | Other detections |
|---|---|---|---|---|---|---|
| 2025-02-10 | Consecutive Connection to Olathe (151st Street) (GU) | SE1 | <4 | <4 | 0 | lithium 14.1 µg/L |
| 2025-02-10 | Consecutive Connection to WaterOne (GU) | SE1 | <4 | <4 | 0 | lithium 40.2 µg/L |
| 2025-02-10 | Miami County RWD #2 Water Treatment Plant (SW) | SE1 | <4 | <4 | 0 | PFBA 7.1 |
| 2025-05-12 | Consecutive Connection to Olathe (151st Street) (GU) | SE2 | <4 | <4 | 0 | lithium 13.4 µg/L |
| 2025-05-12 | Consecutive Connection to WaterOne (GU) | SE2 | <4 | <4 | 0 | lithium 41.1 µg/L |
| 2025-05-12 | Miami County RWD #2 Water Treatment Plant (SW) | SE2 | n/a | n/a | n/a | none |
| 2025-06-03 | Miami County RWD #2 Water Treatment Plant (SW) | SE2 | <4 | <4 | 0 | none |
| 2025-08-11 | Consecutive Connection to Olathe (151st Street) (GU) | SE3 | n/a | n/a | n/a | lithium 11.7 µg/L |
| 2025-08-11 | Consecutive Connection to WaterOne (GU) | SE3 | <4 | <4 | 0 | lithium 33.2 µg/L |
| 2025-08-11 | Miami County RWD #2 Water Treatment Plant (SW) | SE3 | n/a | n/a | n/a | none |
| 2025-09-08 | Consecutive Connection to Olathe (151st Street) (GU) | SE3 | <4 | <4 | 0 | none |
| 2025-09-08 | Miami County RWD #2 Water Treatment Plant (SW) | SE3 | <4 | <4 | 0 | none |
| 2025-11-18 | Consecutive Connection to Olathe (151st Street) (GU) | SE4 | <4 | <4 | 0 | lithium 13.5 µg/L |
| 2025-11-18 | Consecutive Connection to WaterOne (GU) | SE4 | <4 | <4 | 0 | lithium 39.1 µg/L |
| 2025-11-18 | Miami County RWD #2 Water Treatment Plant (SW) | SE4 | <4 | <4 | 0 | none |
“<4” = not detected at the reporting limit shown; “n/a” = not analyzed in that sample. Highlighted = at or above the 4 ppt MCL. HI computed per sample with non-detects as 0. Other detections lists every other quantified compound (lithium in µg/L).
All results by entry point
360 results. Each column is one sampling visit (date and UCMR 5 sample event). A number is a measured concentration; “< 4” = below the minimum reporting level shown; “–” = not analyzed in that visit. PFAS in ppt (ng/L); lithium in µg/L.
Consecutive Connection to Olathe (151st Street) facility 10001 · sample point CC001 · groundwater under the influence of surface water
| Compound | MRL | 2025-02-10 SE1 | 2025-05-12 SE2 | 2025-08-11 SE3 | 2025-09-08 SE3 | 2025-11-18 SE4 |
|---|---|---|---|---|---|---|
| 11Cl-PF3OUdS | 5 ppt | < 5 | < 5 | – | < 5 | < 5 |
| 4:2 FTS | 3 ppt | < 3 | < 3 | – | < 3 | < 3 |
| 6:2 FTS | 5 ppt | < 5 | < 5 | – | < 5 | < 5 |
| 8:2 FTS | 5 ppt | < 5 | < 5 | – | < 5 | < 5 |
| 9Cl-PF3ONS | 2 ppt | < 2 | < 2 | – | < 2 | < 2 |
| ADONA | 3 ppt | < 3 | < 3 | – | < 3 | < 3 |
| HFPO-DA | 5 ppt | < 5 | < 5 | – | < 5 | < 5 |
| NEtFOSAA | 5 ppt | < 5 | < 5 | < 5 | – | < 5 |
| NFDHA | 20 ppt | < 20 | < 20 | – | < 20 | < 20 |
| NMeFOSAA | 6 ppt | < 6 | < 6 | < 6 | – | < 6 |
| PFBA | 5 ppt | < 5 | < 5 | – | < 5 | < 5 |
| PFBS | 3 ppt | < 3 | < 3 | – | < 3 | < 3 |
| PFDA | 3 ppt | < 3 | < 3 | – | < 3 | < 3 |
| PFDoA | 3 ppt | < 3 | < 3 | – | < 3 | < 3 |
| PFEESA | 3 ppt | < 3 | < 3 | – | < 3 | < 3 |
| PFHpA | 3 ppt | < 3 | < 3 | – | < 3 | < 3 |
| PFHpS | 3 ppt | < 3 | < 3 | – | < 3 | < 3 |
| PFHxA | 3 ppt | < 3 | < 3 | – | < 3 | < 3 |
| PFHxS | 3 ppt | < 3 | < 3 | – | < 3 | < 3 |
| PFMBA | 3 ppt | < 3 | < 3 | – | < 3 | < 3 |
| PFMPA | 4 ppt | < 4 | < 4 | – | < 4 | < 4 |
| PFNA | 4 ppt | < 4 | < 4 | – | < 4 | < 4 |
| PFOA | 4 ppt | < 4 | < 4 | – | < 4 | < 4 |
| PFOS | 4 ppt | < 4 | < 4 | – | < 4 | < 4 |
| PFPeA | 3 ppt | < 3 | < 3 | – | < 3 | < 3 |
| PFPeS | 4 ppt | < 4 | < 4 | – | < 4 | < 4 |
| PFTA | 8 ppt | < 8 | < 8 | < 8 | – | < 8 |
| PFTrDA | 7 ppt | < 7 | < 7 | < 7 | – | < 7 |
| PFUnA | 2 ppt | < 2 | < 2 | – | < 2 | < 2 |
| lithium | 9 µg/L | 14.1 | 13.4 | 11.7 | – | 13.5 |
Consecutive Connection to WaterOne facility 10002 · sample point CC002 · groundwater under the influence of surface water
| Compound | MRL | 2025-02-10 SE1 | 2025-05-12 SE2 | 2025-08-11 SE3 | 2025-11-18 SE4 |
|---|---|---|---|---|---|
| 11Cl-PF3OUdS | 5 ppt | < 5 | < 5 | < 5 | < 5 |
| 4:2 FTS | 3 ppt | < 3 | < 3 | < 3 | < 3 |
| 6:2 FTS | 5 ppt | < 5 | < 5 | < 5 | < 5 |
| 8:2 FTS | 5 ppt | < 5 | < 5 | < 5 | < 5 |
| 9Cl-PF3ONS | 2 ppt | < 2 | < 2 | < 2 | < 2 |
| ADONA | 3 ppt | < 3 | < 3 | < 3 | < 3 |
| HFPO-DA | 5 ppt | < 5 | < 5 | < 5 | < 5 |
| NEtFOSAA | 5 ppt | < 5 | < 5 | < 5 | < 5 |
| NFDHA | 20 ppt | < 20 | < 20 | < 20 | < 20 |
| NMeFOSAA | 6 ppt | < 6 | < 6 | < 6 | < 6 |
| PFBA | 5 ppt | < 5 | < 5 | < 5 | < 5 |
| PFBS | 3 ppt | < 3 | < 3 | < 3 | < 3 |
| PFDA | 3 ppt | < 3 | < 3 | < 3 | < 3 |
| PFDoA | 3 ppt | < 3 | < 3 | < 3 | < 3 |
| PFEESA | 3 ppt | < 3 | < 3 | < 3 | < 3 |
| PFHpA | 3 ppt | < 3 | < 3 | < 3 | < 3 |
| PFHpS | 3 ppt | < 3 | < 3 | < 3 | < 3 |
| PFHxA | 3 ppt | < 3 | < 3 | < 3 | < 3 |
| PFHxS | 3 ppt | < 3 | < 3 | < 3 | < 3 |
| PFMBA | 3 ppt | < 3 | < 3 | < 3 | < 3 |
| PFMPA | 4 ppt | < 4 | < 4 | < 4 | < 4 |
| PFNA | 4 ppt | < 4 | < 4 | < 4 | < 4 |
| PFOA | 4 ppt | < 4 | < 4 | < 4 | < 4 |
| PFOS | 4 ppt | < 4 | < 4 | < 4 | < 4 |
| PFPeA | 3 ppt | < 3 | < 3 | < 3 | < 3 |
| PFPeS | 4 ppt | < 4 | < 4 | < 4 | < 4 |
| PFTA | 8 ppt | < 8 | < 8 | < 8 | < 8 |
| PFTrDA | 7 ppt | < 7 | < 7 | < 7 | < 7 |
| PFUnA | 2 ppt | < 2 | < 2 | < 2 | < 2 |
| lithium | 9 µg/L | 40.2 | 41.1 | 33.2 | 39.1 |
Miami County RWD #2 Water Treatment Plant facility 10003 · sample point TP001 · surface water
| Compound | MRL | 2025-02-10 SE1 | 2025-05-12 SE2 | 2025-06-03 SE2 | 2025-08-11 SE3 | 2025-09-08 SE3 | 2025-11-18 SE4 |
|---|---|---|---|---|---|---|---|
| PFBA | 5 ppt | 7.1 | – | < 5 | – | < 5 | < 5 |
| 11Cl-PF3OUdS | 5 ppt | < 5 | – | < 5 | – | < 5 | < 5 |
| 4:2 FTS | 3 ppt | < 3 | – | < 3 | – | < 3 | < 3 |
| 6:2 FTS | 5 ppt | < 5 | – | < 5 | – | < 5 | < 5 |
| 8:2 FTS | 5 ppt | < 5 | – | < 5 | – | < 5 | < 5 |
| 9Cl-PF3ONS | 2 ppt | < 2 | – | < 2 | – | < 2 | < 2 |
| ADONA | 3 ppt | < 3 | – | < 3 | – | < 3 | < 3 |
| HFPO-DA | 5 ppt | < 5 | – | < 5 | – | < 5 | < 5 |
| NEtFOSAA | 5 ppt | < 5 | < 5 | – | < 5 | – | < 5 |
| NFDHA | 20 ppt | < 20 | – | < 20 | – | < 20 | < 20 |
| NMeFOSAA | 6 ppt | < 6 | < 6 | – | < 6 | – | < 6 |
| PFBS | 3 ppt | < 3 | – | < 3 | – | < 3 | < 3 |
| PFDA | 3 ppt | < 3 | – | < 3 | – | < 3 | < 3 |
| PFDoA | 3 ppt | < 3 | – | < 3 | – | < 3 | < 3 |
| PFEESA | 3 ppt | < 3 | – | < 3 | – | < 3 | < 3 |
| PFHpA | 3 ppt | < 3 | – | < 3 | – | < 3 | < 3 |
| PFHpS | 3 ppt | < 3 | – | < 3 | – | < 3 | < 3 |
| PFHxA | 3 ppt | < 3 | – | < 3 | – | < 3 | < 3 |
| PFHxS | 3 ppt | < 3 | – | < 3 | – | < 3 | < 3 |
| PFMBA | 3 ppt | < 3 | – | < 3 | – | < 3 | < 3 |
| PFMPA | 4 ppt | < 4 | – | < 4 | – | < 4 | < 4 |
| PFNA | 4 ppt | < 4 | – | < 4 | – | < 4 | < 4 |
| PFOA | 4 ppt | < 4 | – | < 4 | – | < 4 | < 4 |
| PFOS | 4 ppt | < 4 | – | < 4 | – | < 4 | < 4 |
| PFPeA | 3 ppt | < 3 | – | < 3 | – | < 3 | < 3 |
| PFPeS | 4 ppt | < 4 | – | < 4 | – | < 4 | < 4 |
| PFTA | 8 ppt | < 8 | < 8 | – | < 8 | – | < 8 |
| PFTrDA | 7 ppt | < 7 | < 7 | – | < 7 | – | < 7 |
| PFUnA | 2 ppt | < 2 | – | < 2 | – | < 2 | < 2 |
| lithium | 9 µg/L | < 9 | < 9 | – | < 9 | – | < 9 |
Statistics by compound
| Compound | Results | Detected | Highest (date) | Mean bounds | KM median | P75 | P90 | P95 |
|---|---|---|---|---|---|---|---|---|
| lithium | 12 | 67% | 41.1 2025-05-12 | 17.19–20.19 | 13.4 | 33.2 | 40.2 | 41.1 |
| PFBA | 12 | 8% | 7.1 2025-02-10 | 0.59–5.17 | <MRL | <MRL | <MRL | 7.1 |
Never detected (28): 11Cl-PF3OUdS, 4:2 FTS, 6:2 FTS, 8:2 FTS, 9Cl-PF3ONS, ADONA, HFPO-DA, NEtFOSAA, NFDHA, NMeFOSAA, PFBS, PFDA, PFDoA, PFEESA, PFHpA, PFHpS, PFHxA, PFHxS, PFMBA, PFMPA, PFNA, PFOA, PFOS, PFPeA, PFPeS, PFTA, PFTrDA, PFUnA.
Left-censored Kaplan–Meier statistics (Helsel 2005; Helsel & Lee 2006, NADA for R). Units: ppt; lithium µg/L. Each compound has one reporting limit, so the Kaplan–Meier mean equals the upper mean bound (non-detects at the MRL); the lower bound sets non-detects to 0. “<MRL” = the percentile falls below the reporting limit and cannot be estimated. These describe this system's UCMR 5 samples, not population estimates.
Sources
- EPA UCMR 5 occurrence data text files (UCMR5_All.txt; samples 2023-01-06 to 2026-05-19; data summary dated Jul 2026)
- EPA SDWIS via ECHO SDWA downloads, quarter 2026Q3
- EPA Public Water System Service Areas v3 (Mar 2026)
- US Census Bureau cartographic boundary counties 1:500k, 2024
- EPA/USGS NHDPlus V2 (medium resolution) flowlines, Strahler order 2+
Data build e05f879c10ec · 2026-10-18T04:05Z · UCMR 5 release Jul2026 · SDWIS 2026Q3. Data and methods.