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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

Henderson-Kerr Lake Reg Water

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)

96

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
201412.9 ppb16162.10 ppb - 18.0 ppb
201511.8 ppb16167.40 ppb - 18.0 ppb
201614.7 ppb16166.80 ppb - 22.0 ppb
201717.1 ppb16161.80 ppb - 29.0 ppb
201812.7 ppb16161.70 ppb - 27.0 ppb
201917.0 ppb161612.0 ppb - 26.0 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
2014-02-1192189677002-28.60 ppb
2014-02-1192189677003-215.0 ppb
2014-02-1192189677004-29.00 ppb
2014-02-1192189677001-28.30 ppb
2014-05-1392201161001TTH-218.0 ppb
2014-05-1392201161002TTH-214.0 ppb
2014-05-1392201161003TTH-213.0 ppb
2014-05-1392201161004TTH-212.0 ppb
2014-08-1292213201001TTH-217.0 ppb
2014-08-1292213201002TTH-215.0 ppb
2014-08-1292213201003TTH-22.10 ppb
2014-08-1292213201004TTH-216.0 ppb
2014-11-1292225453003TTH-215.0 ppb
2014-11-1292225453002TTH-213.0 ppb
2014-11-1292225453001TTH-218.0 ppb
2014-11-1392225453004TTH-213.0 ppb
2015-02-1013.0 ppb
2015-02-1011.0 ppb
2015-02-1016.0 ppb
2015-02-108.70 ppb
2015-05-1213.0 ppb
2015-05-1214.0 ppb
2015-05-1213.0 ppb
2015-05-1218.0 ppb
2015-08-1112.0 ppb
2015-08-1112.0 ppb
2015-08-1114.0 ppb
2015-08-1110.00 ppb
2015-11-109.00 ppb
2015-11-108.70 ppb
2015-11-109.10 ppb
2015-11-107.40 ppb
2016-02-0992285879004TTH-211.0 ppb
2016-02-0992285879003TTH-210.00 ppb
2016-02-0992285879002TTH-212.0 ppb
2016-02-0992285879001TTH-212.0 ppb
2016-05-1092297063004TTH-217.0 ppb
2016-05-1092297063003TTH-219.0 ppb
2016-05-1092297063002TTH-222.0 ppb
2016-05-1092297063001TTH-222.0 ppb
2016-08-0992308578001TTH-26.80 ppb
2016-08-0992308578002TTH-215.0 ppb
2016-08-0992308578003TTH-216.0 ppb
2016-08-0992308578004TTH-214.0 ppb
2016-11-0892318998003TTH-212.0 ppb
2016-11-0892318998004TTH-219.0 ppb
2016-11-0892318998006TTH-213.0 ppb
2016-11-0892318998011TTH-214.0 ppb
2017-02-1592330204004TTH11.0 ppb
2017-02-1592330204011TTH10.00 ppb
2017-02-1592330204006TTH12.0 ppb
2017-02-1592330204007TTH14.0 ppb
2017-05-0992340094001TTH17.0 ppb
2017-05-0992340094002TTH16.0 ppb
2017-05-0992340094003TTH16.0 ppb
2017-05-0992340094004TTH18.0 ppb
2017-08-0892350856011TTH29.0 ppb
2017-08-0892350856010TTH19.0 ppb
2017-08-0892350856008TTH25.0 ppb
2017-08-0892350856003TTH28.0 ppb
2017-11-1492363440001TTH1.80 ppb
2017-11-1492363440002TTH16.0 ppb
2017-11-1492363440005TTH19.0 ppb
2017-11-1492363440006TTH22.0 ppb
2018-02-1392373408008TTH 14.0 ppb
2018-02-1392373408005TTH 10.00 ppb
2018-02-1392373408004TTH 9.80 ppb
2018-02-1392373408001TTH 15.0 ppb
2018-05-0192383116004TTH 11.0 ppb
2018-05-0192383116001TTH 2.20 ppb
2018-05-0192383116002TTH 9.10 ppb
2018-05-0192383116003TTH 7.60 ppb
2018-08-0892395245004TTH 6.80 ppb
2018-08-0892395245003TTH 23.0 ppb
2018-08-0892395245002TTH 21.0 ppb
2018-08-0892395245001TTH 27.0 ppb
2018-11-0692406545003TTH 2.20 ppb
2018-11-0692406545007TTH 21.0 ppb
2018-11-0692406545008TTH 22.0 ppb
2018-11-0692406545011TTH 1.70 ppb
2019-02-0592416954001_377023.0 ppb
2019-02-0592416954002_377019.0 ppb
2019-02-0592416954003_377020.0 ppb
2019-02-0592416954004_377020.0 ppb
2019-05-0792428873001_377022.0 ppb
2019-05-0792428873004_377026.0 ppb
2019-05-0792428873003_377022.0 ppb
2019-05-0792428873002_377016.0 ppb
2019-08-0692440471004_377013.0 ppb
2019-08-0692440471008_377014.0 ppb
2019-08-0692440471005_377014.0 ppb
2019-08-0692440471001_377014.0 ppb
2019-11-0592452959004_377012.0 ppb
2019-11-0592452959003_377012.0 ppb
2019-11-0592452959002_377013.0 ppb
2019-11-0592452959001_377012.0 ppb