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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

Calcasieu Parish WW District No 1

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

 

84

Samples

0

Samples exceeding legal limit (MCL)

28

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.558 ppb246ND - 4.00 ppb
20150.519 ppb328ND - 3.00 ppb
20160.258 ppb164ND - 1.20 ppb
20170.550 ppb42ND - 1.10 ppb
20180.850 ppb440.770 ppb - 0.930 ppb
20191.21 ppb440.710 ppb - 1.70 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
2014-04-11S14040197AND
2014-04-11S14040195AND
2014-04-11S14040196AND
2014-04-11S14040197AND
2014-04-11S14040198AND
2014-04-11S14040196AND
2014-04-11S14040195AND
2014-04-11S14040198AND
2014-07-0135145596003ND
2014-07-0135145596001ND
2014-07-01351455960021.30 ppb
2014-07-0135145596003ND
2014-07-0135145596004ND
2014-07-01351455960021.30 ppb
2014-07-0135145596001ND
2014-07-0135145596004ND
2014-10-03L0049097-031.40 ppb
2014-10-03L0049097-04ND
2014-10-03L0049097-04ND
2014-10-03L0049097-031.40 ppb
2014-10-03L0049097-024.00 ppb
2014-10-03L0049097-01ND
2014-10-03L0049097-024.00 ppb
2014-10-03L0049097-01ND
2015-01-06L0052757-04ND
2015-01-06L0052757-01ND
2015-01-06L0052757-021.60 ppb
2015-01-06L0052757-03ND
2015-01-06L0052757-04ND
2015-01-06L0052757-03ND
2015-01-06L0052757-021.60 ppb
2015-01-06L0052757-01ND
2015-04-07LA5872-1ND
2015-04-07LA5872-4ND
2015-04-07LA5872-3ND
2015-04-07LA5872-2ND
2015-04-07LA5872-4ND
2015-04-07LA5872-3ND
2015-04-07LA5872-2ND
2015-04-07LA5872-1ND
2015-07-0735197553004ND
2015-07-0735197553003ND
2015-07-07351975530022.10 ppb
2015-07-07351975530013.00 ppb
2015-07-0735197553004ND
2015-07-0735197553003ND
2015-07-07351975530022.10 ppb
2015-07-07351975530013.00 ppb
2015-10-06LA12625-1ND
2015-10-06LA12625-4ND
2015-10-06LA12625-21.60 ppb
2015-10-06LA12625-3ND
2015-10-06LA12625-4ND
2015-10-06LA12625-21.60 ppb
2015-10-06LA12625-3ND
2015-10-06LA12625-1ND
2016-01-06LA15885-3ND
2016-01-06LA15885-4ND
2016-01-06LA15885-21.20 ppb
2016-01-06LA15885-1ND
2016-01-06LA15885-4ND
2016-01-06LA15885-1ND
2016-01-06LA15885-21.20 ppb
2016-01-06LA15885-3ND
2016-07-01LA22824-3ND
2016-07-01LA22824-4ND
2016-07-01LA22824-3ND
2016-07-01LA22824-20.860 ppb
2016-07-01LA22824-1ND
2016-07-01LA22824-1ND
2016-07-01LA22824-4ND
2016-07-01LA22824-20.860 ppb
2017-07-05353227130041.10 ppb
2017-07-0535322713003ND
2017-07-0535322713003ND
2017-07-05353227130041.10 ppb
2018-07-11354041730020.770 ppb
2018-07-11354041730010.930 ppb
2018-07-11354041730010.930 ppb
2018-07-11354041730020.770 ppb
2019-07-25354853370010.710 ppb
2019-07-25354853370021.70 ppb
2019-07-25354853370010.710 ppb
2019-07-25354853370021.70 ppb