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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

Nueces County WCID 4

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

 

88

Samples

0

Samples exceeding legal limit (MCL)

71

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20144.19 ppb882.10 ppb - 8.00 ppb
20154.91 ppb1612ND - 11.9 ppb
20161.81 ppb1614ND - 3.80 ppb
20171.88 ppb1612ND - 3.60 ppb
20181.23 ppb1614ND - 1.80 ppb
20191.21 ppb1611ND - 3.00 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
2014-03-11AC464684.30 ppb
2014-03-11AC464593.50 ppb
2014-06-10AC564602.10 ppb
2014-06-10AC564588.00 ppb
2014-08-05AC622185.00 ppb
2014-08-05AC622195.70 ppb
2014-11-12AC718822.60 ppb
2014-11-12AC718852.30 ppb
2015-02-18AC80936ND
2015-02-18AC80924ND
2015-02-18AC80932ND
2015-02-18AC80908ND
2015-04-22AC8919111.9 ppb
2015-04-22AC891999.70 ppb
2015-04-22AC892009.60 ppb
2015-04-22AC8920610.8 ppb
2015-08-11AD035718.30 ppb
2015-08-11AD035657.00 ppb
2015-08-11AD035771.80 ppb
2015-08-11AD035749.50 ppb
2015-12-01AD148832.80 ppb
2015-12-01AD148912.60 ppb
2015-12-01AD149082.10 ppb
2015-12-01AD149092.40 ppb
2016-02-09AD226951.90 ppb
2016-02-09AD227141.90 ppb
2016-02-09AD226861.70 ppb
2016-02-09AD226942.10 ppb
2016-04-13AD329882.50 ppb
2016-04-13AD329972.20 ppb
2016-04-13AD329902.20 ppb
2016-04-13AD329873.00 ppb
2016-09-13AD49113ND
2016-09-13AD490743.10 ppb
2016-09-13AD49116ND
2016-09-13AD490771.10 ppb
2016-11-10AD577071.40 ppb
2016-11-10AD577181.000 ppb
2016-11-10AD577091.10 ppb
2016-11-10AD577053.80 ppb
2017-02-22AD714712.30 ppb
2017-02-22AD714702.80 ppb
2017-02-22AD714682.70 ppb
2017-02-22AD714661.20 ppb
2017-05-15AD841942.90 ppb
2017-05-15AD841842.40 ppb
2017-05-15AD84193ND
2017-05-15AD841832.00 ppb
2017-08-24AD94112ND
2017-08-24AD94123ND
2017-08-24AD94092ND
2017-08-24AD941221.80 ppb
2017-11-15AE049422.60 ppb
2017-11-15AE049383.30 ppb
2017-11-15AE049402.50 ppb
2017-11-15AE049393.60 ppb
2018-02-07AE127101.40 ppb
2018-02-07AE127351.40 ppb
2018-02-07AE127431.80 ppb
2018-02-07AE127361.60 ppb
2018-04-25AE239161.20 ppb
2018-04-25AE238931.000 ppb
2018-04-25AE239151.40 ppb
2018-04-25AE238861.80 ppb
2018-07-24AE34292ND
2018-07-24AE342861.000 ppb
2018-07-24AE34291ND
2018-07-24AE342851.20 ppb
2018-10-16AE436221.50 ppb
2018-10-16AE436211.30 ppb
2018-10-16AE436181.20 ppb
2018-10-16AE436191.80 ppb
2019-01-22AE506522.70 ppb
2019-01-22AE506562.70 ppb
2019-01-22AE506542.60 ppb
2019-01-22AE506513.00 ppb
2019-04-16AE625051.10 ppb
2019-04-16AE625031.20 ppb
2019-04-16AE625091.000 ppb
2019-04-16AE625041.30 ppb
2019-08-01AE767501.10 ppb
2019-08-01AE76767ND
2019-08-01AE767531.10 ppb
2019-08-01AE767541.50 ppb
2019-11-20AE89946ND
2019-11-20AE89958ND
2019-11-20AE89955ND
2019-11-20AE89950ND