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EWG's Tap Water Database — 2021 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.

MORE ABOUT THIS CONTAMINANT

 

96

Samples

0

Samples exceeding legal limit (MCL)

76

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
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
20181.93 ppb16161.000 ppb - 3.80 ppb
20191.79 ppb1612ND - 4.30 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
2014-02-25AC444641.30 ppb
2014-02-25AC444471.40 ppb
2014-02-25AC444291.70 ppb
2014-02-25AC444731.70 ppb
2014-05-08AC536261.50 ppb
2014-05-08AC535931.30 ppb
2014-05-08AC536292.00 ppb
2014-05-08AC536101.40 ppb
2014-08-08AC629071.60 ppb
2014-08-08AC62926ND
2014-08-08AC629061.80 ppb
2014-08-08AC62905ND
2014-11-03AC710311.40 ppb
2014-11-03AC710181.40 ppb
2014-11-03AC710261.40 ppb
2014-11-03AC710221.50 ppb
2015-01-15AC764372.90 ppb
2015-01-15AC764334.40 ppb
2015-01-15AC764393.50 ppb
2015-01-15AC764343.30 ppb
2015-04-06AC873334.50 ppb
2015-04-06AC873414.90 ppb
2015-04-06AC8734211.9 ppb
2015-04-06AC873394.90 ppb
2015-07-31AD020701.20 ppb
2015-07-31AD020711.30 ppb
2015-07-31AD020721.30 ppb
2015-07-31AD020681.40 ppb
2015-10-08AD099892.00 ppb
2015-10-08AD099882.00 ppb
2015-10-08AD099841.80 ppb
2015-10-08AD099871.90 ppb
2016-01-20AD189061.90 ppb
2016-01-20AD189082.20 ppb
2016-01-20AD189052.00 ppb
2016-01-20AD189072.30 ppb
2016-04-14AD331731.50 ppb
2016-04-14AD331751.000 ppb
2016-04-14AD33174ND
2016-04-14AD33171ND
2016-07-19AD44684ND
2016-07-19AD44688ND
2016-07-19AD44690ND
2016-07-19AD44687ND
2016-12-08AD611421.70 ppb
2016-12-08AD61146ND
2016-12-08AD611452.60 ppb
2016-12-08AD611432.30 ppb
2017-01-12AD646771.10 ppb
2017-01-12AD646761.50 ppb
2017-01-12AD64671ND
2017-01-12AD646751.000 ppb
2017-05-23AD851831.20 ppb
2017-05-23AD851871.10 ppb
2017-05-23AD851841.20 ppb
2017-05-23AD851861.10 ppb
2017-07-13AD89257ND
2017-07-13AD89258ND
2017-07-13AD89260ND
2017-07-13AD892591.20 ppb
2017-10-03AD99023ND
2017-10-03AD99024ND
2017-10-03AD99022ND
2017-10-03AD990251.000 ppb
2018-01-25AE105192.00 ppb
2018-01-25AE105162.40 ppb
2018-01-25AE105182.50 ppb
2018-01-25AE105172.40 ppb
2018-04-19AE231881.000 ppb
2018-04-19AE231981.20 ppb
2018-04-19AE231971.60 ppb
2018-04-19AE231871.10 ppb
2018-08-15AE371271.40 ppb
2018-08-15AE371261.40 ppb
2018-08-15AE371241.50 ppb
2018-08-15AE371221.70 ppb
2018-11-08AE457583.80 ppb
2018-11-08AE457562.70 ppb
2018-11-08AE457572.40 ppb
2018-11-08AE457591.80 ppb
2019-01-28AE515972.60 ppb
2019-01-28AE515962.60 ppb
2019-01-28AE515952.40 ppb
2019-01-28AE515982.20 ppb
2019-05-02AE646211.30 ppb
2019-05-02AE646221.20 ppb
2019-05-02AE645942.10 ppb
2019-05-02AE645871.90 ppb
2019-08-09AE78016ND
2019-08-09AE78007ND
2019-08-09AE78009ND
2019-08-09AE78008ND
2019-10-01AE853014.30 ppb
2019-10-01AE853043.80 ppb
2019-10-01AE852992.10 ppb
2019-10-01AE853092.10 ppb