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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

City of Pittsburg

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)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND160ND
20150.0813 ppb161ND - 1.30 ppb
2016ND160ND
20170.0338 ppb161ND - 0.540 ppb
2018ND160ND
2019ND160ND

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
2014-02-1864050ND
2014-02-1864048ND
2014-02-1864046ND
2014-02-1864044ND
2014-05-05110651ND
2014-05-05110650ND
2014-05-05110649ND
2014-05-05110648ND
2014-08-18175959ND
2014-08-18175958ND
2014-08-18175960ND
2014-08-18175961ND
2014-11-17232963ND
2014-11-17232962ND
2014-11-17232961ND
2014-11-17232959ND
2015-02-16280167ND
2015-02-16280166ND
2015-02-16280165ND
2015-02-16280164ND
2015-05-18335678ND
2015-05-18335679ND
2015-05-183356811.30 ppb
2015-05-18335680ND
2015-08-17389586ND
2015-08-17389585ND
2015-08-17389584ND
2015-08-17389583ND
2015-11-30428169ND
2015-11-30428168ND
2015-11-30428167ND
2015-11-30428166ND
2016-02-08490888ND
2016-02-08490887ND
2016-02-08490889ND
2016-02-08490890ND
2016-05-31554880ND
2016-05-31554879ND
2016-05-31554878ND
2016-05-31554877ND
2016-08-22608696ND
2016-08-22608695ND
2016-08-22608694ND
2016-08-22608693ND
2016-11-14660742ND
2016-11-14660745ND
2016-11-14660744ND
2016-11-14660743ND
2017-02-20711819ND
2017-02-20711818ND
2017-02-20711817ND
2017-02-20711816ND
2017-05-30769043ND
2017-05-30769042ND
2017-05-30769041ND
2017-05-30769040ND
2017-08-22824889ND
2017-08-228248880.540 ppb
2017-08-22824890ND
2017-08-22824891ND
2017-11-14878982ND
2017-11-14878981ND
2017-11-14878980ND
2017-11-14878979ND
2018-02-20908563ND
2018-02-20908562ND
2018-02-20908561ND
2018-02-20908560ND
2018-05-22974788ND
2018-05-22974789ND
2018-05-22974791ND
2018-05-22974790ND
2018-08-211030105ND
2018-08-211030104ND
2018-08-211030103ND
2018-08-211030102ND
2018-11-061074605ND
2018-11-061074604ND
2018-11-061074603ND
2018-11-061074602ND
2019-02-121121020ND
2019-02-121121019ND
2019-02-121121021ND
2019-02-121121022ND
2019-05-141157997ND
2019-05-141157996ND
2019-05-141157995ND
2019-05-141157994ND
2019-08-131223579ND
2019-08-131223578ND
2019-08-131223577ND
2019-08-131223576ND
2019-11-181277556ND
2019-11-181277559ND
2019-11-181277558ND
2019-11-181277557ND