Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Trichloroacetic acid

Los Angeles County WW District 29 & 80-Malib

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

 

86

Samples

0

Samples exceeding legal limit (MCL)

39

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20141.62 ppb129ND - 3.57 ppb
20152.55 ppb1614ND - 6.04 ppb
20161.77 ppb169ND - 6.86 ppb
20170.125 ppb161ND - 2.00 ppb
20180.442 ppb124ND - 1.80 ppb
20190.457 ppb142ND - 3.30 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
2014-06-105442-803-08101.23 ppb
2014-06-105442-802-09252.84 ppb
2014-06-105442-801-09401.99 ppb
2014-06-185442-804-08161.26 ppb
2014-09-095442-804-12153.57 ppb
2014-09-095442-803-08402.48 ppb
2014-09-095442-802-09532.26 ppb
2014-09-095442-801-10122.31 ppb
2014-12-095442-804-12551.46 ppb
2014-12-095442-803-0814ND
2014-12-095442-802-0922ND
2014-12-095442-801-0941ND
2015-03-125442-802-09381.45 ppb
2015-03-125442-803-08431.98 ppb
2015-03-125442-804-11081.84 ppb
2015-03-125442-801-09551.81 ppb
2015-06-095442-801-09521.79 ppb
2015-06-095442-804-12253.47 ppb
2015-06-095442-803-08271.85 ppb
2015-06-125442-802-08281.95 ppb
2015-09-105442-801-09564.24 ppb
2015-09-105442-804-13455.31 ppb
2015-09-105442-803-08305.18 ppb
2015-09-105442-802-09276.04 ppb
2015-12-095442-804-13041.67 ppb
2015-12-095442-802-1147ND
2015-12-095442-803-1403ND
2015-12-095442-801-12122.16 ppb
2016-03-085442-804-1217ND
2016-03-085442-802-0930ND
2016-03-085442-801-0946ND
2016-03-085442-803-0816ND
2016-06-075442-804-11303.04 ppb
2016-06-075442-802-09023.09 ppb
2016-06-075442-801-09212.99 ppb
2016-06-075442-803-08162.32 ppb
2016-09-075442-803-08103.32 ppb
2016-09-075442-804-12036.86 ppb
2016-09-075442-801-09272.61 ppb
2016-09-075442-802-09042.12 ppb
2016-12-065442-801-09221.99 ppb
2016-12-065442-804-1122ND
2016-12-065442-802-0901ND
2016-12-065442-803-0807ND
2017-03-095442-801-0955ND
2017-03-095442-804-1042ND
2017-03-095442-802-0931ND
2017-03-095442-803-0841ND
2017-06-139588-802-0937ND
2017-06-139588-803-0825ND
2017-06-139588-801-1002ND
2017-06-139588-804-1218ND
2017-09-129590-803-0755ND
2017-09-129590-802-1230ND
2017-09-129590-801-1220ND
2017-09-129590-804-1300ND
2017-12-129590-801-0845ND
2017-12-129590-804-0800ND
2017-12-129590-803-10002.00 ppb
2017-12-129590-802-0910ND
2018-03-139590-803-0745ND
2018-03-139590-001-0845ND
2018-03-139590-002-08301.80 ppb
2018-06-129590-002-0918ND
2018-06-129590-001-0924ND
2018-06-129590-803-0800ND
2018-09-119590-803-0730ND
2018-09-119590-001-1228ND
2018-09-119590-002-09471.10 ppb
2018-12-119590-001-09381.20 ppb
2018-12-119590-803-0820ND
2018-12-119590-002-10001.20 ppb
2019-03-129590-001-0850ND
2019-03-129590-803-0715ND
2019-03-129590-002-0813ND
2019-06-119590-002-0840ND
2019-06-119590-001-0900ND
2019-06-119590-803-1210ND
2019-09-129590-804-0830ND
2019-09-129590-001-10203.30 ppb
2019-09-129590-803-1145ND
2019-09-129590-002-09403.10 ppb
2019-12-109590-801-0840ND
2019-12-109590-802-0835ND
2019-12-109590-804-1110ND
2019-12-109590-803-1147ND