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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

City of Pharr

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

 

192

Samples

0

Samples exceeding legal limit (MCL)

84

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20141.34 ppb3226ND - 2.50 ppb
20150.553 ppb3214ND - 1.60 ppb
20160.569 ppb3215ND - 1.80 ppb
20170.978 ppb328ND - 8.30 ppb
20180.619 ppb3213ND - 2.10 ppb
20190.344 ppb328ND - 2.00 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
2014-02-27AC450262.30 ppb
2014-02-27AC450351.80 ppb
2014-02-27AC450171.60 ppb
2014-02-27AC450331.70 ppb
2014-02-27AC450311.80 ppb
2014-02-27AC450131.70 ppb
2014-02-27AC450251.70 ppb
2014-02-27AC450272.10 ppb
2014-04-24AC516771.90 ppb
2014-04-24AC516752.10 ppb
2014-04-24AC517082.50 ppb
2014-04-24AC516792.10 ppb
2014-04-24AC516762.30 ppb
2014-04-24AC517071.70 ppb
2014-04-24AC516782.50 ppb
2014-04-24AC517132.10 ppb
2014-07-11AC595801.10 ppb
2014-07-11AC59574ND
2014-07-11AC595771.000 ppb
2014-07-11AC59572ND
2014-07-11AC595811.30 ppb
2014-07-11AC59617ND
2014-07-11AC595821.000 ppb
2014-07-11AC596141.10 ppb
2014-10-09AC69404ND
2014-10-09AC69409ND
2014-10-09AC694151.000 ppb
2014-10-09AC694141.30 ppb
2014-10-09AC694101.000 ppb
2014-10-09AC694131.20 ppb
2014-10-09AC69405ND
2014-10-09AC694161.10 ppb
2015-01-23AC77726ND
2015-01-23AC77756ND
2015-01-23AC77737ND
2015-01-23AC77718ND
2015-01-23AC77746ND
2015-01-23AC77751ND
2015-01-23AC77735ND
2015-01-23AC77719ND
2015-05-08AC91269ND
2015-05-08AC91293ND
2015-05-08AC91274ND
2015-05-08AC91264ND
2015-05-08AC91296ND
2015-05-08AC91297ND
2015-05-08AC91298ND
2015-05-08AC91253ND
2015-07-17AD000791.50 ppb
2015-07-17AD001091.20 ppb
2015-07-17AD000841.60 ppb
2015-07-17AD000821.20 ppb
2015-07-17AD000801.000 ppb
2015-07-17AD000831.60 ppb
2015-07-17AD001101.60 ppb
2015-08-07AD032201.40 ppb
2015-10-23AD116761.10 ppb
2015-10-23AD11683ND
2015-10-23AD116931.30 ppb
2015-10-23AD116861.000 ppb
2015-10-23AD116871.000 ppb
2015-10-23AD11679ND
2015-10-23AD116891.20 ppb
2015-10-23AD116821.000 ppb
2016-03-22AD298661.10 ppb
2016-03-22AD298681.10 ppb
2016-03-22AD298711.10 ppb
2016-03-22AD298691.10 ppb
2016-03-22AD29863ND
2016-03-22AD298701.10 ppb
2016-03-22AD298611.20 ppb
2016-03-22AD298621.30 ppb
2016-06-08AD39715ND
2016-06-08AD39753ND
2016-06-08AD39711ND
2016-06-08AD39710ND
2016-06-08AD39752ND
2016-06-08AD39712ND
2016-06-08AD39713ND
2016-06-08AD397501.000 ppb
2016-07-15AD444461.10 ppb
2016-07-15AD444451.20 ppb
2016-07-15AD444491.70 ppb
2016-07-15AD444411.000 ppb
2016-07-15AD44444ND
2016-07-15AD444391.10 ppb
2016-07-15AD444481.80 ppb
2016-07-15AD444471.30 ppb
2016-10-28AD55408ND
2016-10-28AD55397ND
2016-10-28AD55413ND
2016-10-28AD55401ND
2016-10-28AD55405ND
2016-10-28AD55406ND
2016-10-28AD55400ND
2016-10-28AD55407ND
2017-02-10AD70355ND
2017-02-10AD70358ND
2017-02-10AD70354ND
2017-02-10AD70359ND
2017-02-10AD70352ND
2017-02-10AD70350ND
2017-02-10AD70361ND
2017-02-10AD70351ND
2017-04-19AD80145ND
2017-04-19AD80149ND
2017-04-19AD80137ND
2017-04-19AD80150ND
2017-04-19AD80142ND
2017-04-19AD80138ND
2017-04-19AD801441.000 ppb
2017-04-19AD80124ND
2017-07-13AD892431.000 ppb
2017-07-13AD89272ND
2017-07-13AD89245ND
2017-07-13AD892341.000 ppb
2017-07-13AD89271ND
2017-07-13AD89247ND
2017-07-13AD89249ND
2017-07-13AD892411.000 ppb
2017-10-31AE029018.30 ppb
2017-10-31AE02912ND
2017-10-31AE02906ND
2017-10-31AE02917ND
2017-10-31AE029037.40 ppb
2017-10-31AE029007.20 ppb
2017-10-31AE029054.40 ppb
2017-10-31AE02894ND
2018-02-15AE14053ND
2018-02-15AE14049ND
2018-02-15AE14057ND
2018-02-15AE140331.10 ppb
2018-02-15AE140341.30 ppb
2018-02-15AE14054ND
2018-02-15AE14055ND
2018-02-15AE14041ND
2018-05-15AE263321.000 ppb
2018-05-15AE26335ND
2018-05-15AE26339ND
2018-05-15AE26349ND
2018-05-15AE26336ND
2018-05-15AE263511.30 ppb
2018-05-15AE26330ND
2018-05-15AE263501.50 ppb
2018-07-10AE327741.50 ppb
2018-07-10AE327751.60 ppb
2018-07-10AE327672.10 ppb
2018-07-10AE327661.70 ppb
2018-07-10AE327681.60 ppb
2018-07-10AE327761.60 ppb
2018-07-10AE327711.60 ppb
2018-07-10AE327731.90 ppb
2018-11-08AE45737ND
2018-11-08AE45761ND
2018-11-08AE45746ND
2018-11-08AE45741ND
2018-11-08AE45736ND
2018-11-08AE45742ND
2018-11-08AE45739ND
2018-11-08AE45760ND
2019-02-14AE547311.000 ppb
2019-02-14AE54730ND
2019-02-14AE54721ND
2019-02-14AE54722ND
2019-02-14AE54728ND
2019-02-14AE54724ND
2019-02-14AE54727ND
2019-02-14AE54726ND
2019-05-02AE646031.80 ppb
2019-05-02AE646111.20 ppb
2019-05-02AE646231.20 ppb
2019-05-02AE645932.00 ppb
2019-05-02AE645911.50 ppb
2019-05-02AE646101.000 ppb
2019-05-02AE645921.30 ppb
2019-05-02AE64624ND
2019-09-05AE82266ND
2019-09-05AE82245ND
2019-09-05AE82254ND
2019-09-05AE82250ND
2019-09-05AE82246ND
2019-09-05AE82267ND
2019-09-05AE82244ND
2019-09-05AE82252ND
2019-12-04AE91224ND
2019-12-04AE91235ND
2019-12-04AE91232ND
2019-12-04AE91233ND
2019-12-04AE91225ND
2019-12-04AE91222ND
2019-12-04AE91221ND
2019-12-04AE91234ND