Systems with a yearly average at or above an EPA-based study benchmark
2.2%2 of 89 active community water systems
All 89 systems had enough required samples to calculate a yearly average. 2 had at least one yearly average at or above a study benchmark; 87 did not.
EPA-based study benchmark: the unrounded cutoff this research uses to reproduce EPA’s January 2026 technical-assistance classification around the April 2024 federal levels. It is not a current standard or compliance finding and cannot determine household exposure or health risk.
Check your area
Find your water system
ZIP codes are used only to route visitors to public water systems that reported serving them. Confirm the actual provider using a water bill or utility record.
Compound summary
System counts in Kansas
Each count shows how many included water systems had a yearly average at or above the named study benchmark.
| Study benchmark | Systems at or above benchmark | Water systems included | Percent |
|---|---|---|---|
| PFOA: 4.05 ppt study benchmark (reproduces EPA classification around 4 ppt) | 1 | 89 | 1.1% |
| PFOS: 4.05 ppt study benchmark (reproduces EPA classification around 4 ppt) | 2 | 89 | 2.2% |
| PFHxS: 15 ppt study benchmark (reproduces EPA classification around 10 ppt) | 2 | 89 | 2.2% |
| PFNA: 15 ppt study benchmark (reproduces EPA classification around 10 ppt) | 0 | 89 | 0.0% |
| HFPO-DA: 15 ppt study benchmark (reproduces EPA classification around 10 ppt) | 0 | 89 | 0.0% |
| Hazard Index: 1.5 study benchmark with at least two detected components (reproduces EPA classification around 1) | 2 | 89 | 2.2% |
System directory
Community water systems with complete monitoring
“Complete monitoring” means at least one sampling location had all required samples needed for a yearly average. Each PWSID appears once, preventing double counting across ZIP associations.
| Public water system | PWSID | Population served | Primary source | Sampling locations | Study benchmark result |
|---|---|---|---|---|---|
| ABILENE, CITY OF | KS2004112 | 6,468 | Groundwater under influence of surface water | 1 | Below all study benchmarks |
| ARKANSAS CITY, CITY OF | KS2003509 | 11,929 | Ground water | 1 | Below all study benchmarks |
| ATCHISON CO RWD 5C | KS2000511 | 3,690 | Surface water purchased | 2 | Below all study benchmarks |
| ATCHISON, CITY OF | KS2000506 | 10,694 | Surface water | 1 | Below all study benchmarks |
| AUGUSTA, CITY OF | KS2001503 | 9,267 | Surface water | 1 | Below all study benchmarks |
| American Water - Fort Leavenworth | KS2010311 | 12,934 | Ground water | 1 | Below all study benchmarks |
| BALDWIN CITY, CITY OF | KS2004510 | 4,882 | Surface water purchased | 1 | Below all study benchmarks |
| BAXTER SPRINGS, CITY OF | KS2002109 | 3,852 | Surface water | 1 | Below all study benchmarks |
| BEL AIRE, CITY OF | KS2017304 | 8,448 | Surface water purchased | 1 | Below all study benchmarks |
| BONNER SPRINGS, CITY OF | KS2020904 | 7,805 | Purchased ground water under influence of surface water source | 1 | Below all study benchmarks |
| BOURBON CO RWD 2C | KS2001103 | 7,050 | Surface water purchased | 5 | Below all study benchmarks |
| BUTLER CO RWD 5 | KS2001526 | 6,457 | Surface water purchased | 2 | Below all study benchmarks |
| CHANUTE, CITY OF | KS2013307 | 8,642 | Surface water | 1 | Below all study benchmarks |
| CLAY CENTER, CITY OF | KS2002701 | 4,138 | Ground water | 1 | Below all study benchmarks |
| COFFEYVILLE, CITY OF | KS2012513 | 8,847 | Surface water | 1 | Below all study benchmarks |
| COLBY, CITY OF | KS2019302 | 5,516 | Ground water | 9 | Below all study benchmarks |
| CONCORDIA, CITY OF | KS2002907 | 5,032 | Ground water | 5 | Below all study benchmarks |
| COUNCIL GROVE, CITY OF | KS2012702 | 2,111 | Surface water | 1 | Below all study benchmarks |
| CRAWFORD CO RWD 5 | KS2003702 | 2,200 | Ground water | 2 | Below all study benchmarks |
| DESOTO, CITY OF | KS2009102 | 4,645 | Ground water | 1 | Below all study benchmarks |
| DODGE CITY, CITY OF | KS2005710 | 27,104 | Ground water | 14 | Below all study benchmarks |
| DOUGLAS CO RWD 3 | KS2004507 | 4,663 | Surface water | 2 | Below all study benchmarks |
| DOUGLAS CO RWD 4 | KS2004509 | 3,000 | Surface water purchased | 2 | Below all study benchmarks |
| EL DORADO, CITY OF | KS2001511 | 12,810 | Surface water | 1 | Below all study benchmarks |
| EL PASO WATER COMPANY | KS2017328 | 25,413 | Surface water purchased | 1 | Below all study benchmarks |
| EUDORA, CITY OF | KS2004511 | 6,449 | Ground water | 1 | Below all study benchmarks |
| FORT SCOTT, CITY OF | KS2001104 | 7,513 | Surface water | 1 | Below all study benchmarks |
| FRUSI WATER TREATMENT PLANT | KS2006114 | 35,784 | Ground water | 1 | At or above a study benchmark |
| GARDEN CITY, CITY OF | KS2005511 | 35,126 | Ground water | 8 | Below all study benchmarks |
| GARDNER, CITY OF | KS2009106 | 23,942 | Surface water | 1 | Below all study benchmarks |
| GODDARD, CITY OF | KS2017325 | 5,372 | Ground water | 1 | Below all study benchmarks |
| GOODLAND, CITY OF | KS2018102 | 4,450 | Ground water | 1 | Below all study benchmarks |
| GREAT BEND, CITY OF | KS2000911 | 14,580 | Ground water | 10 | At or above a study benchmark |
| HAYS, CITY OF | KS2005111 | 21,040 | Ground water | 1 | Below all study benchmarks |
| HAYSVILLE, CITY OF | KS2017322 | 11,315 | Ground water | 1 | Below all study benchmarks |
| HESSTON, CITY OF | KS2007902 | 3,495 | Ground water | 1 | Below all study benchmarks |
| HUGOTON, CITY OF | KS2018901 | 3,764 | Ground water | 7 | Below all study benchmarks |
| HUTCHINSON, CITY OF | KS2015509 | 39,712 | Ground water | 1 | Below all study benchmarks |
| INDEPENDENCE, CITY OF | KS2012508 | 8,464 | Surface water | 1 | Below all study benchmarks |
| IOLA, CITY OF | KS2000103 | 5,343 | Surface water | 1 | Below all study benchmarks |
| JEFFERSON CO RWD 12 | KS2008717 | 3,635 | Surface water purchased | 2 | Below all study benchmarks |
| JUNCTION CITY, CITY OF | KS2006108 | 19,167 | Ground water | 1 | Below all study benchmarks |
| KANSAS CITY BOARD OF PUBLIC UTILITIES | KS2020906 | 152,960 | Groundwater under influence of surface water | 1 | Below all study benchmarks |
| LAN DEL WATER DISTRICT | KS2010313 | 7,302 | Surface water purchased | 2 | Below all study benchmarks |
| LARNED, CITY OF | KS2014505 | 3,621 | Ground water | 5 | Below all study benchmarks |
| LAWRENCE, CITY OF | KS2004503 | 95,256 | Surface water | 2 | Below all study benchmarks |
| LEAVENWORTH WATER DEPARTMENT | KS2010317 | 38,757 | Surface water | 2 | Below all study benchmarks |
| LIBERAL, CITY OF | KS2017504 | 19,640 | Ground water | 8 | Below all study benchmarks |
| LYONS, CITY OF | KS2015903 | 3,556 | Ground water | 2 | Below all study benchmarks |
| MAIZE, CITY OF | KS2017345 | 6,060 | Ground water | 1 | Below all study benchmarks |
| MANHATTAN, CITY OF | KS2016112 | 54,763 | Ground water | 1 | Below all study benchmarks |
| MAPLE HILL, CITY OF | KS2019708 | 646 | Ground water | 2 | Below all study benchmarks |
| MCCONNELL AFB | KS2017323 | 6,009 | Surface water purchased | 1 | Below all study benchmarks |
| MCPHERSON, CITY OF | KS2011309 | 13,944 | Ground water | 1 | Below all study benchmarks |
| MEDICINE LODGE, CITY OF | KS2000702 | 1,723 | Ground water | 1 | Below all study benchmarks |
| MORAN, CITY OF | KS2000116 | 467 | Surface water purchased | 1 | Below all study benchmarks |
| MOUNDRIDGE, CITY OF | KS2011304 | 1,958 | Ground water | 2 | Below all study benchmarks |
| MULVANE, CITY OF | KS2019113 | 6,587 | Surface water purchased | 1 | Below all study benchmarks |
| MUNDEN, CITY OF | KS2015708 | 99 | Ground water purchased | 1 | Below all study benchmarks |
| NEWTON KS, CITY OF | KS2007905 | 18,433 | Ground water | 1 | Below all study benchmarks |
| OLATHE, CITY OF | KS2009115 | 143,014 | Surface water | 1 | Below all study benchmarks |
| OTTAWA, CITY OF | KS2005906 | 12,604 | Surface water | 1 | Below all study benchmarks |
| PAOLA, CITY OF | KS2012103 | 5,786 | Surface water purchased | 1 | Below all study benchmarks |
| PARK CITY, CITY OF | KS2017303 | 8,503 | Surface water purchased | 2 | Below all study benchmarks |
| PERRY, CITY OF | KS2008720 | 858 | Ground water | 1 | Below all study benchmarks |
| PITTSBURG, CITY OF | KS2003705 | 20,738 | Ground water | 1 | Below all study benchmarks |
| POTTAWATOMIE CO RWD 1 | KS2014912 | 7,535 | Ground water | 3 | Below all study benchmarks |
| PRATT, CITY OF | KS2015103 | 6,573 | Ground water | 10 | Below all study benchmarks |
| RUSSELL, CITY OF | KS2016703 | 4,388 | Surface water | 1 | Below all study benchmarks |
| SALINA, CITY OF | KS2016914 | 46,481 | Surface water | 2 | Below all study benchmarks |
| SCOTT CITY, CITY OF | KS2017101 | 3,748 | Ground water | 2 | Below all study benchmarks |
| SEDGWICK CO RWD 2 | KS2017315 | 1,460 | Surface water purchased | 1 | Below all study benchmarks |
| SEDGWICK CO RWD 3 | KS2017306 | 6,045 | Surface water purchased | 1 | Below all study benchmarks |
| SHAWNEE CO RWD 1C | KS2017704 | 4,160 | Surface water purchased | 1 | Below all study benchmarks |
| SHAWNEE CO RWD 4C | KS2017718 | 12,000 | Surface water purchased | 3 | Below all study benchmarks |
| SHAWNEE CO RWD 8 | KS2017708 | 6,073 | Surface water purchased | 2 | Below all study benchmarks |
| SUBURBAN WATER COMPANY | KS2010321 | 4,700 | Purchased ground water under influence of surface water source | 2 | Below all study benchmarks |
| SYLVAN GROVE, CITY OF | KS2010502 | 285 | Ground water | 1 | Below all study benchmarks |
| TONGANOXIE, CITY OF | KS2010306 | 5,702 | Purchased ground water under influence of surface water source | 1 | Below all study benchmarks |
| TOPEKA, CITY OF | KS2017701 | 125,963 | Surface water | 1 | Below all study benchmarks |
| ULYSSES, CITY OF | KS2006704 | 6,410 | Ground water | 2 | Below all study benchmarks |
| UNIVERSITY OF KANSAS | KS2004513 | 35,000 | Surface water purchased | 1 | Below all study benchmarks |
| VIRGIL, CITY OF | KS2007307 | 48 | Surface water purchased | 1 | Below all study benchmarks |
| WATER DISTRICT 1 OF JOHNSON CO | KS2009110 | 490,000 | Surface water | 3 | Below all study benchmarks |
| WATHENA, CITY OF | KS2004308 | 1,242 | Ground water purchased | 1 | Below all study benchmarks |
| WAVERLY, CITY OF | KS2003108 | 574 | Surface water purchased | 1 | Below all study benchmarks |
| WELLINGTON, CITY OF | KS2019119 | 7,664 | Surface water | 1 | Below all study benchmarks |
| WICHITA, CITY OF | KS2017308 | 395,699 | Surface water | 1 | Below all study benchmarks |
| WINFIELD, CITY OF | KS2003513 | 11,726 | Surface water | 1 | Below all study benchmarks |
How the count works
What is included
Each active community water system with enough required samples for a yearly average is counted once, even if it is linked with several ZIP codes. This does not mean every home was tested. Private wells are excluded, and UCMR 5 did not comprehensively monitor every small system. This page does not apply Kansas's state-specific standards or determine compliance. Use the official state or territory drinking-water program for current regulatory information.