Tapcensus

TTHM (Total Trihalomethanes) violations in Kansas

134 active public water systems in Kansas had a TTHM (Total Trihalomethanes) violation in the past three years, 13 of them in the latest quarter of EPA's data. What TTHM (Total Trihalomethanes) is and why it matters.

Health effects: Long-term exposure is associated with increased bladder cancer risk. Some studies link high TTHM exposure to adverse reproductive outcomes. Bromodichloromethane is classified as a possible human carcinogen.

Systems with a TTHM (Total Trihalomethanes) violation

Latest quarter first, then largest first
SystemServesStatusRules violated, 3 yrUnresolved
Lyndon, City of
Lyndon · Osage County 		1,049 3 1
Dighton, City of
Dighton · Lane County 		954 2 1
Norton Correctional Facility
Norton · Norton County 		950 3 1
Garden Plain, City of
Garden Plain · Sedgwick County 		941 1 0
Kiowa, City of
Kiowa · Barber County 		869 6 2
Alma, City of
Alma · Wabaunsee County 		799 2 0
Spearville, City of
Spearville · Ford County 		796 1 0
Butler CO Rwd 1
El Dorado · Butler County 		782 3 0
Canton, City of
Canton · McPherson County 		699 2 1
Mound City, City of
Mound City · Linn County 		678 4 1
Whitewater, City of
Whitewater · Butler County 		666 5 1
Wilson CO Rwd 7
Fredonia · Wilson County 		585 1 0
McPherson CO Rwd 6
Lindsborg · McPherson County 		565 2 1
Goessel, City of
Goessel · Marion County 		558 1 0
Claflin, City of
Claflin · Barton County 		553 3 1
Elk CO Rwd 2
Howard · Elk County 		520 4 1
Kickapoo Tribal Waterworks
County 		520 9 1
Metro Topeka Airport Authority
Topeka · Shawnee County 		500 2 1
Macksville, City of
Macksville · Stafford County 		471 3 0
Moran, City of
Moran · Allen County 		467 1 0
Wilson CO Rwd 9
Toronto · Wilson County 		447 1 0
Norwich, City of
Norwich · Kingman County 		433 4 0
Montgomery CO Rwd 9
Elk City · Montgomery County 		430 1 0
Chicopee Rural Water District
Pittsburg · Crawford County 		425 2 0
Potwin, City of
Potwin · Butler County 		424 5 1
Florence, City of
Florence · Marion County 		387 2 1
Almena, City of
Almena · Norton County 		366 2 1
Mitchell CO Rwd 1
Glen Elder · Mitchell County 		345 1 0
Midwest Camps, LLC
Halstead · Harvey County 		340 4 1
Montgomery CO Rwd 8
Independence · Montgomery County 		340 3 0
Neosho CO Rwd 8
St Paul · Neosho County 		323 4 0
Hope, City of
Hope · Dickinson County 		312 2 0
Elk City, City of
Elk City · Montgomery County 		292 4 0
Longton, City of
Longton · Elk County 		277 1 0
Greeley, City of
Greeley · Anderson County 		271 3 2
Tescott, City of
Tescott · Ottawa County 		271 7 2
Princeton, City of
Princeton · Franklin County 		252 3 2
Copeland, City of
Copeland · Gray County 		251 6 1
Crawford CO Rwd 3
Arma · Crawford County 		250 3 1
Brookville, City of
Brookville · Saline County 		244 3 1
Walton, City of
Walton · Harvey County 		217 5 1
Fontana, City of
Fontana · Miami County 		216 1 0
Easton, City of
Easton · Leavenworth County 		211 4 3
Sylvia, City of
Sylvia · Reno County 		210 6 3
Prescott, City of
Prescott · Linn County 		207 3 2
Ford, City of
Ford · Ford County 		204 6 0
Toronto, City of
Toronto · Woodson County 		203 5 1
Wilson CO Rwd 2
Fredonia · Wilson County 		194 5 2
Iowa Tribe of KS & NE
County 		192 9 0
Reading, City of
Reading · Lyon County 		182 2 0
About this data

A system is counted once if any of its violations in the past three years involved TTHM (Total Trihalomethanes), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not TTHM (Total Trihalomethanes) alone.

Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Kansas records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet.