Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Trichloroacetic acid

City of Sherman

Trichloroacetic acid, one of the group of five haloacetic acids regulated by federal standards, is formed when chlorine or other disinfectants are used to treat drinking water. Haloacetic acids and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

MORE ABOUT THIS CONTAMINANT

 

96

Samples

0

Samples exceeding legal limit (MCL)

44

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.750 ppb169ND - 2.20 ppb
20151.26 ppb168ND - 4.70 ppb
20161.64 ppb168ND - 6.40 ppb
20170.475 ppb165ND - 1.90 ppb
20180.750 ppb167ND - 2.90 ppb
20190.988 ppb167ND - 3.00 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.1 ppb

The EWG Health Guideline of 0.1 ppb for trichloroacetic acid was proposed in 2020 by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk.a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

ppb = parts per billion

All test results

Date Lab ID Result
2014-03-24Q14091650031.10 ppb
2014-03-24Q14091650011.10 ppb
2014-03-31AC48690ND
2014-03-31AC48691ND
2014-06-16Q1421403004ND
2014-06-16Q14214030031.30 ppb
2014-06-16Q1421403002ND
2014-06-16Q14214030011.30 ppb
2014-08-20Q1438015020ND
2014-08-20Q1438015019ND
2014-08-20Q14380150212.20 ppb
2014-08-20Q1438015022ND
2014-11-13Q14559610241.30 ppb
2014-11-13Q14559610231.20 ppb
2014-11-13Q14559610221.30 ppb
2014-11-13Q14559610201.20 ppb
2015-03-17Q1509888010ND
2015-03-17Q15098880091.20 ppb
2015-03-17Q1509888008ND
2015-03-17Q15098880071.10 ppb
2015-04-23Q15151690081.70 ppb
2015-04-23Q1515169009ND
2015-04-23Q1515169011ND
2015-04-23Q15151690101.60 ppb
2015-07-22Q1528508008ND
2015-07-22Q15285080073.90 ppb
2015-07-22Q1528508006ND
2015-07-22Q15285080054.70 ppb
2015-11-03Q1543355005ND
2015-11-03Q15433550043.60 ppb
2015-11-03Q1543355003ND
2015-11-03Q15433550022.40 ppb
2016-01-20Q1602479005ND
2016-01-20Q16024790042.30 ppb
2016-01-20Q16024790062.10 ppb
2016-01-20Q1602479007ND
2016-04-11Q1614214012ND
2016-04-11Q16142140112.10 ppb
2016-04-11Q1614214010ND
2016-04-11Q16142140092.10 ppb
2016-07-14Q1628667006ND
2016-07-14Q16286670056.40 ppb
2016-07-14Q1628667004ND
2016-07-14Q16286670036.20 ppb
2016-10-10Q16431340012.30 ppb
2016-10-10Q1643134004ND
2016-10-10Q16431340032.70 ppb
2016-10-10Q1643134002ND
2017-01-12Q1701556002ND
2017-01-12Q17015560181.90 ppb
2017-01-12Q1701556001ND
2017-01-12Q17015560171.80 ppb
2017-04-13Q1715306004ND
2017-04-13Q1715306003ND
2017-04-13Q1715306002ND
2017-04-13Q17153060011.000 ppb
2017-07-11Q1728660009ND
2017-07-11Q1728660023ND
2017-07-11Q17286600011.50 ppb
2017-07-11Q1728660010ND
2017-10-10Q1751594015ND
2017-10-10Q1751594014ND
2017-10-10Q1751594013ND
2017-10-10Q17515940081.40 ppb
2018-01-10Q1801240030ND
2018-01-10Q1801240029ND
2018-01-10Q1801240028ND
2018-01-10Q1801240027ND
2018-05-29Q18214050011.20 ppb
2018-05-29Q1821405003ND
2018-05-29Q1821405004ND
2018-05-29Q18214050021.40 ppb
2018-08-20Q1833198008ND
2018-08-20Q18331980032.20 ppb
2018-08-20Q18331980071.10 ppb
2018-08-20Q18331980022.90 ppb
2018-11-29Q1848810008ND
2018-11-29Q18488100041.50 ppb
2018-11-29Q1848810001ND
2018-11-29Q18488100031.70 ppb
2019-02-12Q1906434024ND
2019-02-12Q19064340233.00 ppb
2019-02-12Q19064340253.00 ppb
2019-02-12Q1906434026ND
2019-05-07Q1922272029ND
2019-05-07Q19222720282.00 ppb
2019-05-07Q1922272027ND
2019-05-07Q19222720262.20 ppb
2019-08-13Q1955291004ND
2019-08-13Q19552910032.10 ppb
2019-08-13Q1955291002ND
2019-08-13Q19552910012.40 ppb
2019-11-14Q1976986001ND
2019-11-14Q1976986004ND
2019-11-14Q19769860031.10 ppb
2019-11-14Q1976986002ND