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EWG's Tap Water Database — 2019 UPDATE

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Trichloroacetic acid

City of Angleton

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.

 

82

Samples

0

Samples exceeding legal limit (MCL)

60

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20121.69 ppb86ND - 3.40 ppb
20132.41 ppb106ND - 5.60 ppb
20141.34 ppb1614ND - 2.00 ppb
20153.33 ppb16161.20 ppb - 11.9 ppb
20161.09 ppb169ND - 2.60 ppb
20170.650 ppb169ND - 1.50 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.5 ppb

The EWG Health Guideline of 0.5 ppb for trichloroacetic acid was defined by the Environmental Protection Agency as 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
2012-01-03AB768461.70 ppb
2012-01-03AB76842ND
2012-04-03AB858253.00 ppb
2012-04-03AB858241.20 ppb
2012-07-09AB946811.80 ppb
2012-07-09AB946892.40 ppb
2012-11-13AC050613.40 ppb
2012-11-13AC05062ND
2013-01-29AC089884.20 ppb
2013-01-29AC089893.80 ppb
2013-04-17AC171462.90 ppb
2013-04-17AC171473.80 ppb
2013-07-22AC253635.60 ppb
2013-07-22AC253773.80 ppb
2013-11-14AC35247ND
2013-11-14AC35244ND
2013-11-14AC35243ND
2013-11-14AC35246ND
2014-02-25AC444641.30 ppb
2014-02-25AC444471.40 ppb
2014-02-25AC444291.70 ppb
2014-02-25AC444731.70 ppb
2014-05-08AC536101.40 ppb
2014-05-08AC536292.00 ppb
2014-05-08AC535931.30 ppb
2014-05-08AC536261.50 ppb
2014-08-08AC62926ND
2014-08-08AC629071.60 ppb
2014-08-08AC629061.80 ppb
2014-08-08AC62905ND
2014-11-03AC710181.40 ppb
2014-11-03AC710311.40 ppb
2014-11-03AC710261.40 ppb
2014-11-03AC710221.50 ppb
2015-01-15AC764343.30 ppb
2015-01-15AC764393.50 ppb
2015-01-15AC764334.40 ppb
2015-01-15AC764372.90 ppb
2015-04-06AC8734211.9 ppb
2015-04-06AC873394.90 ppb
2015-04-06AC873414.90 ppb
2015-04-06AC873334.50 ppb
2015-07-31AD020701.20 ppb
2015-07-31AD020711.30 ppb
2015-07-31AD020721.30 ppb
2015-07-31AD020681.40 ppb
2015-10-08AD099871.90 ppb
2015-10-08AD099841.80 ppb
2015-10-08AD099882.00 ppb
2015-10-08AD099892.00 ppb
2016-01-20AD189052.00 ppb
2016-01-20AD189072.30 ppb
2016-01-20AD189061.90 ppb
2016-01-20AD189082.20 ppb
2016-04-14AD33171ND
2016-04-14AD33174ND
2016-04-14AD331751.000 ppb
2016-04-14AD331731.50 ppb
2016-07-19AD44684ND
2016-07-19AD44688ND
2016-07-19AD44690ND
2016-07-19AD44687ND
2016-12-08AD611421.70 ppb
2016-12-08AD611432.30 ppb
2016-12-08AD611452.60 ppb
2016-12-08AD61146ND
2017-01-12AD646751.000 ppb
2017-01-12AD64671ND
2017-01-12AD646761.50 ppb
2017-01-12AD646771.10 ppb
2017-05-23AD851831.20 ppb
2017-05-23AD851841.20 ppb
2017-05-23AD851861.10 ppb
2017-05-23AD851871.10 ppb
2017-07-13AD89258ND
2017-07-13AD89260ND
2017-07-13AD892591.20 ppb
2017-07-13AD89257ND
2017-10-03AD990251.000 ppb
2017-10-03AD99023ND
2017-10-03AD99024ND
2017-10-03AD99022ND