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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

McAllen Public Utility

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)

50

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.513 ppb3212ND - 2.40 ppb
20150.744 ppb3215ND - 2.70 ppb
20160.822 ppb3221ND - 1.80 ppb
2017ND320ND
20180.0719 ppb322ND - 1.30 ppb
2019ND320ND

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
2014-02-27AC44999ND
2014-02-27AC45036ND
2014-02-27AC450281.10 ppb
2014-02-27AC45032ND
2014-02-27AC45029ND
2014-02-27AC45034ND
2014-02-27AC450001.30 ppb
2014-02-27AC45030ND
2014-04-25AC51868ND
2014-04-25AC51846ND
2014-04-25AC51840ND
2014-04-25AC51864ND
2014-04-25AC51843ND
2014-04-25AC518502.00 ppb
2014-04-25AC51847ND
2014-04-25AC51839ND
2014-08-18AC641811.40 ppb
2014-08-18AC64121ND
2014-08-18AC641531.20 ppb
2014-08-18AC64123ND
2014-08-18AC641541.10 ppb
2014-08-18AC64126ND
2014-08-18AC64119ND
2014-08-18AC641581.40 ppb
2014-10-09AC694061.20 ppb
2014-10-09AC69403ND
2014-10-09AC694021.30 ppb
2014-10-09AC694081.000 ppb
2014-10-09AC693992.40 ppb
2014-10-09AC69407ND
2014-10-09AC69400ND
2014-10-09AC694011.000 ppb
2015-03-12AC840651.000 ppb
2015-03-12AC84057ND
2015-03-12AC84060ND
2015-03-12AC84058ND
2015-03-12AC84054ND
2015-03-12AC840621.30 ppb
2015-03-12AC84059ND
2015-03-12AC84046ND
2015-06-10AC953952.10 ppb
2015-06-10AC95399ND
2015-06-10AC954171.000 ppb
2015-06-10AC953681.10 ppb
2015-06-10AC954142.70 ppb
2015-06-10AC95398ND
2015-06-10AC953691.40 ppb
2015-06-10AC95396ND
2015-08-06AD028862.00 ppb
2015-08-06AD028871.40 ppb
2015-08-06AD029061.40 ppb
2015-08-06AD029042.00 ppb
2015-08-06AD028881.90 ppb
2015-08-06AD02903ND
2015-08-06AD02894ND
2015-08-06AD028852.10 ppb
2015-11-18AD140051.20 ppb
2015-11-18AD13999ND
2015-11-18AD13998ND
2015-11-18AD14006ND
2015-11-18AD140041.20 ppb
2015-11-18AD14001ND
2015-11-18AD14016ND
2015-11-18AD14019ND
2016-03-23AD300901.10 ppb
2016-03-23AD300871.10 ppb
2016-03-23AD300851.10 ppb
2016-03-23AD300881.10 ppb
2016-03-23AD300911.000 ppb
2016-03-23AD300891.10 ppb
2016-03-23AD300921.50 ppb
2016-03-23AD300861.10 ppb
2016-06-07AD39574ND
2016-06-07AD395701.000 ppb
2016-06-07AD39575ND
2016-06-07AD395801.50 ppb
2016-06-07AD395791.30 ppb
2016-06-07AD395721.000 ppb
2016-06-07AD39576ND
2016-06-07AD395781.50 ppb
2016-08-02AD466011.80 ppb
2016-08-02AD46618ND
2016-08-02AD46606ND
2016-08-02AD466351.70 ppb
2016-08-02AD466051.60 ppb
2016-08-02AD46628ND
2016-08-02AD46602ND
2016-08-02AD466221.50 ppb
2016-10-27AD55126ND
2016-10-27AD55102ND
2016-10-27AD551101.10 ppb
2016-10-27AD55106ND
2016-10-27AD551091.000 ppb
2016-10-27AD551121.20 ppb
2016-10-27AD55107ND
2016-10-27AD551111.000 ppb
2017-02-09AD69897ND
2017-02-09AD69899ND
2017-02-09AD69928ND
2017-02-09AD69896ND
2017-02-09AD69895ND
2017-02-09AD69929ND
2017-02-09AD69900ND
2017-02-09AD69930ND
2017-04-19AD80141ND
2017-04-19AD80151ND
2017-04-19AD80143ND
2017-04-19AD80139ND
2017-04-19AD80147ND
2017-04-19AD80146ND
2017-04-19AD80140ND
2017-04-19AD80123ND
2017-07-12AD89049ND
2017-07-12AD89057ND
2017-07-12AD89046ND
2017-07-12AD89048ND
2017-07-12AD89030ND
2017-07-12AD89047ND
2017-07-12AD89043ND
2017-07-12AD89045ND
2017-10-05AD99532ND
2017-10-05AD99529ND
2017-10-05AD99531ND
2017-10-05AD99530ND
2017-10-05AD99527ND
2017-10-05AD99526ND
2017-10-05AD99528ND
2017-10-05AD99525ND
2018-03-08AE17517ND
2018-03-08AE17499ND
2018-03-08AE17489ND
2018-03-08AE17514ND
2018-03-08AE17513ND
2018-03-08AE17518ND
2018-03-08AE175151.30 ppb
2018-03-08AE17516ND
2018-05-15AE26344ND
2018-05-15AE26343ND
2018-05-15AE26334ND
2018-05-15AE26345ND
2018-05-15AE26337ND
2018-05-15AE26333ND
2018-05-15AE26329ND
2018-05-15AE26328ND
2018-08-15AE37178ND
2018-08-15AE37165ND
2018-08-15AE37168ND
2018-08-15AE37177ND
2018-08-15AE37166ND
2018-08-15AE37176ND
2018-08-15AE371641.000 ppb
2018-08-15AE37162ND
2018-11-07AE45594ND
2018-11-07AE45599ND
2018-11-07AE45591ND
2018-11-07AE45587ND
2018-11-07AE45595ND
2018-11-07AE45593ND
2018-11-07AE45590ND
2018-11-07AE45592ND
2019-02-14AE54725ND
2019-02-14AE54733ND
2019-02-14AE54732ND
2019-02-14AE54723ND
2019-02-14AE54734ND
2019-02-14AE54729ND
2019-02-14AE54735ND
2019-02-14AE54736ND
2019-05-22AE67601ND
2019-05-22AE67649ND
2019-05-22AE67602ND
2019-05-22AE67650ND
2019-05-22AE67648ND
2019-05-22AE67653ND
2019-05-22AE67652ND
2019-05-22AE67651ND
2019-09-30AE85091ND
2019-09-30AE85094ND
2019-09-30AE85092ND
2019-09-30AE85067ND
2019-09-30AE85101ND
2019-09-30AE85099ND
2019-09-30AE85098ND
2019-09-30AE85068ND
2019-12-04AE91227ND
2019-12-04AE91223ND
2019-12-04AE91231ND
2019-12-04AE91229ND
2019-12-04AE91230ND
2019-12-04AE91220ND
2019-12-04AE91226ND
2019-12-04AE91228ND