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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

Harris County MUD 200 Cranbrook

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)

74

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20142.54 ppb1615ND - 5.00 ppb
20152.17 ppb1611ND - 5.20 ppb
20161.16 ppb1611ND - 2.80 ppb
20171.76 ppb1615ND - 2.80 ppb
20180.888 ppb1610ND - 1.90 ppb
20191.02 ppb1612ND - 1.90 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
2014-02-24AC442162.70 ppb
2014-02-24AC442082.40 ppb
2014-02-24AC442152.70 ppb
2014-02-24AC442103.00 ppb
2014-05-30AC556163.20 ppb
2014-05-30AC556184.60 ppb
2014-05-30AC556014.10 ppb
2014-05-30AC555912.60 ppb
2014-07-24AC609341.30 ppb
2014-07-24AC609331.40 ppb
2014-07-24AC609311.20 ppb
2014-07-24AC60935ND
2014-10-21AC701841.20 ppb
2014-10-21AC701622.80 ppb
2014-10-21AC701585.00 ppb
2014-10-21AC701602.50 ppb
2015-01-22AC77405ND
2015-01-22AC77408ND
2015-01-22AC774061.20 ppb
2015-01-22AC77416ND
2015-04-15AC883324.20 ppb
2015-04-15AC883231.80 ppb
2015-04-15AC883144.40 ppb
2015-04-15AC883224.40 ppb
2015-07-29AD014811.50 ppb
2015-07-29AD01459ND
2015-07-29AD014741.10 ppb
2015-07-29AD01462ND
2015-12-07AD156672.10 ppb
2015-12-07AD156645.20 ppb
2015-12-07AD156664.30 ppb
2015-12-07AD156634.50 ppb
2016-02-11AD23327ND
2016-02-11AD23317ND
2016-02-11AD23320ND
2016-02-11AD233252.80 ppb
2016-06-06AD394012.40 ppb
2016-06-06AD394051.30 ppb
2016-06-06AD393991.60 ppb
2016-06-06AD394091.50 ppb
2016-09-28AD520012.00 ppb
2016-09-28AD520041.20 ppb
2016-09-28AD520072.10 ppb
2016-09-28AD520121.10 ppb
2016-11-15AD57967ND
2016-11-15AD579641.40 ppb
2016-11-15AD57965ND
2016-11-15AD579661.20 ppb
2017-02-09AD698901.40 ppb
2017-02-09AD698921.40 ppb
2017-02-09AD698891.40 ppb
2017-02-09AD698911.50 ppb
2017-05-09AD833252.40 ppb
2017-05-09AD833342.00 ppb
2017-05-09AD833282.20 ppb
2017-05-09AD833272.20 ppb
2017-08-09AD925282.50 ppb
2017-08-09AD925322.80 ppb
2017-08-09AD925252.40 ppb
2017-08-09AD925291.30 ppb
2017-11-20AE05358ND
2017-11-20AE053601.60 ppb
2017-11-20AE053611.40 ppb
2017-11-20AE053571.60 ppb
2018-02-14AE140111.20 ppb
2018-02-14AE140321.90 ppb
2018-02-14AE140141.80 ppb
2018-02-14AE140061.80 ppb
2018-06-14AE30014ND
2018-06-14AE30013ND
2018-06-14AE30017ND
2018-06-14AE30018ND
2018-08-20AE37565ND
2018-08-20AE375571.30 ppb
2018-08-20AE37555ND
2018-08-20AE375531.20 ppb
2018-10-11AE432491.000 ppb
2018-10-11AE432361.20 ppb
2018-10-11AE432501.30 ppb
2018-10-11AE432351.50 ppb
2019-02-04AE526561.30 ppb
2019-02-04AE526571.50 ppb
2019-02-04AE526551.50 ppb
2019-02-04AE526541.000 ppb
2019-04-30AE640671.40 ppb
2019-04-30AE640751.000 ppb
2019-04-30AE640681.30 ppb
2019-04-30AE640741.10 ppb
2019-08-13AE78565ND
2019-08-13AE78569ND
2019-08-13AE78570ND
2019-08-13AE78562ND
2019-10-23AE873501.40 ppb
2019-10-23AE873521.70 ppb
2019-10-23AE873541.20 ppb
2019-10-23AE873531.90 ppb