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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

SJWTX Triple Peak Plant

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)

53

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20141.67 ppb1613ND - 4.00 ppb
20154.29 ppb1610ND - 14.5 ppb
20160.844 ppb162ND - 9.80 ppb
20170.381 ppb165ND - 1.50 ppb
20180.700 ppb169ND - 1.50 ppb
20191.31 ppb1614ND - 2.80 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
2014-02-18AC433192.70 ppb
2014-02-18AC433093.20 ppb
2014-02-18AC43327ND
2014-02-18AC433324.00 ppb
2014-04-17AC510572.10 ppb
2014-04-17AC510562.00 ppb
2014-04-17AC51055ND
2014-04-17AC510341.70 ppb
2014-07-24AC609361.80 ppb
2014-07-24AC609391.40 ppb
2014-07-24AC609521.30 ppb
2014-07-24AC609371.90 ppb
2014-11-14AC721422.20 ppb
2014-11-14AC721841.000 ppb
2014-11-14AC72160ND
2014-11-14AC721591.40 ppb
2015-01-16AC769271.50 ppb
2015-01-16AC769391.10 ppb
2015-01-16AC76935ND
2015-01-16AC769452.70 ppb
2015-06-03AC94370ND
2015-06-03AC94371ND
2015-06-03AC94372ND
2015-06-03AC94369ND
2015-08-05AD0257714.5 ppb
2015-08-05AD025879.10 ppb
2015-08-05AD0257811.4 ppb
2015-08-05AD025799.60 ppb
2015-11-03AD123875.70 ppb
2015-11-03AD124445.80 ppb
2015-11-03AD12384ND
2015-11-03AD123457.30 ppb
2016-01-26AD20057ND
2016-01-26AD20040ND
2016-01-26AD200463.70 ppb
2016-01-26AD200319.80 ppb
2016-04-22AD33941ND
2016-04-22AD33943ND
2016-04-22AD33942ND
2016-04-22AD33940ND
2016-07-26AD45670ND
2016-07-26AD45677ND
2016-07-26AD45669ND
2016-07-26AD45668ND
2016-10-04AD52426ND
2016-10-04AD52429ND
2016-10-04AD52430ND
2016-10-04AD52433ND
2017-02-01AD68050ND
2017-02-01AD68059ND
2017-02-01AD68051ND
2017-02-01AD68061ND
2017-05-03AD827081.20 ppb
2017-05-03AD827061.10 ppb
2017-05-03AD82707ND
2017-06-26AD87777ND
2017-07-27AD91037ND
2017-07-27AD910361.10 ppb
2017-07-27AD910401.20 ppb
2017-07-27AD910501.50 ppb
2017-11-27AE05730ND
2017-11-27AE05729ND
2017-11-27AE05728ND
2017-11-27AE05727ND
2018-02-06AE124741.000 ppb
2018-02-06AE124651.20 ppb
2018-02-06AE12467ND
2018-02-06AE12468ND
2018-04-23AE23429ND
2018-04-23AE234411.20 ppb
2018-04-23AE234351.30 ppb
2018-04-23AE234301.000 ppb
2018-07-24AE342771.50 ppb
2018-07-24AE342801.10 ppb
2018-07-24AE34278ND
2018-07-24AE34279ND
2018-11-06AE45367ND
2018-11-06AE453711.40 ppb
2018-11-06AE45368ND
2018-11-06AE453661.50 ppb
2019-02-12AE542071.10 ppb
2019-02-12AE542042.80 ppb
2019-02-12AE542051.30 ppb
2019-02-12AE542062.20 ppb
2019-05-22AE676561.50 ppb
2019-05-22AE676581.80 ppb
2019-05-22AE676591.000 ppb
2019-05-22AE676571.80 ppb
2019-07-01AE728051.50 ppb
2019-07-01AE728041.60 ppb
2019-07-01AE728031.000 ppb
2019-07-01AE728081.10 ppb
2019-10-15AE86735ND
2019-10-15AE867341.20 ppb
2019-10-15AE867331.10 ppb
2019-10-15AE86736ND