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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

Sardis Water Association

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

 

100

Samples

0

Samples exceeding legal limit (MCL)

31

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20142.30 ppb207ND - 13.4 ppb
20150.956 ppb163ND - 10.00 ppb
20161.80 ppb166ND - 12.6 ppb
20171.66 ppb164ND - 11.1 ppb
20181.80 ppb166ND - 14.6 ppb
20193.19 ppb165ND - 19.5 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
2014-01-0714010001301ND
2014-01-0714010001201ND
2014-01-071401000110110.7 ppb
2014-01-07140100014011.40 ppb
2014-01-1314016003201ND
2014-01-13140160033011.10 ppb
2014-01-131401600300110.6 ppb
2014-01-1314016003101ND
2014-04-021409300800113.4 ppb
2014-04-0214093006601ND
2014-04-0214093006501ND
2014-04-0214093006701ND
2014-07-0714191001101ND
2014-07-07141910012017.10 ppb
2014-07-0714191000801ND
2014-07-0714191000701ND
2014-10-08142820145011.70 ppb
2014-10-0814282014201ND
2014-10-0814282014101ND
2014-10-0814282014001ND
2015-01-07150080171012.90 ppb
2015-01-0715008016901ND
2015-01-0715008016801ND
2015-01-0715008017001ND
2015-04-071509900860110.00 ppb
2015-04-0715099007901ND
2015-04-0715099008001ND
2015-04-0715099008101ND
2015-07-0615189002201ND
2015-07-0615189002101ND
2015-07-06151890020012.40 ppb
2015-07-0615189002301ND
2015-10-0715281006601ND
2015-10-0715281006701ND
2015-10-0715281006501ND
2015-10-0715281003901ND
2016-01-07160080037019.70 ppb
2016-01-07160080034011.60 ppb
2016-01-0716008003501ND
2016-01-0716008003601ND
2016-04-0616098002801ND
2016-04-0616098002601ND
2016-04-0616098003901ND
2016-04-061609800270112.6 ppb
2016-07-04161890015011.10 ppb
2016-07-0416189001101ND
2016-07-04161890012012.70 ppb
2016-07-0416189001601ND
2016-10-0516280017601ND
2016-10-0516280017501ND
2016-10-05162800173011.10 ppb
2016-10-0516280017401ND
2017-01-0417005008501ND
2017-01-0417005008401ND
2017-01-04170050083016.60 ppb
2017-01-0417005008201ND
2017-04-0317096001001ND
2017-04-0317096000901ND
2017-04-0317096001101ND
2017-04-03170960008017.60 ppb
2017-07-0317187014001ND
2017-07-041718701410111.1 ppb
2017-07-0417187014201ND
2017-07-0417187013901ND
2017-10-0217278015301ND
2017-10-0217278015201ND
2017-10-02172780151011.30 ppb
2017-10-0217278015001ND
2018-01-02180040005016.20 ppb
2018-01-0218004001501ND
2018-01-0218004000301ND
2018-01-0218004000201ND
2018-04-021809501600114.6 ppb
2018-04-0218095014801ND
2018-04-02180950153011.10 ppb
2018-04-0218095014701ND
2018-07-04181860157014.20 ppb
2018-07-04181860160011.10 ppb
2018-08-0118213000201ND
2018-08-0118213000301ND
2018-10-0218277012301ND
2018-10-0218277012401ND
2018-10-0218277012201ND
2018-10-02182770108011.60 ppb
2019-01-081901100370213.9 ppb
2019-01-0819011003802ND
2019-01-0819011002302ND
2019-01-0819011002402ND
2019-04-0319094012501ND
2019-04-031909401260113.4 ppb
2019-04-0319094012801ND
2019-04-031909401270119.5 ppb
2019-07-0919192013001ND
2019-07-09191920129011.50 ppb
2019-07-0919192012801ND
2019-07-0919192012501ND
2019-10-01192760080012.70 ppb
2019-10-0119276007101ND
2019-10-0119276008201ND
2019-10-0119276008101ND