Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Trichloroacetic acid

Park WC - Lynwood

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

 

89

Samples

0

Samples exceeding legal limit (MCL)

31

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.85 ppb168ND - 5.80 ppb
20151.63 ppb126ND - 4.30 ppb
20160.681 ppb166ND - 2.70 ppb
20172.62 ppb1610ND - 9.90 ppb
20180.0846 ppb131ND - 1.10 ppb
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
2014-01-169588-802-11234.00 ppb
2014-01-169588-800-1034ND
2014-01-169588-801-1058ND
2014-01-169588-803-11143.80 ppb
2014-04-179588-803-10252.80 ppb
2014-04-179588-802-10172.50 ppb
2014-04-179588-801-1007ND
2014-04-179588-800-1000ND
2014-07-109588-803-11105.80 ppb
2014-07-109588-802-11205.00 ppb
2014-07-109588-801-1055ND
2014-07-109588-800-1045ND
2014-10-169588-802-10152.60 ppb
2014-10-169588-801-1000ND
2014-10-169588-803-10253.10 ppb
2014-10-169588-800-0945ND
2015-01-229588-802-10151.70 ppb
2015-01-229588-803-10451.50 ppb
2015-01-229588-801-0958ND
2015-01-229588-800-0945ND
2015-04-179588-803-08103.70 ppb
2015-04-179588-802-07594.30 ppb
2015-04-179588-800-0722ND
2015-04-179588-801-0742ND
2015-07-169588-803-12254.20 ppb
2015-07-169588-800-1140ND
2015-07-169588-801-1155ND
2015-07-169588-802-12104.10 ppb
2016-02-049588-800-1055ND
2016-02-049588-801-1110ND
2016-02-049588-803-11301.60 ppb
2016-02-049588-802-11451.40 ppb
2016-04-229588-800-0855ND
2016-04-229588-803-0930ND
2016-04-229588-801-0905ND
2016-04-229588-802-09202.70 ppb
2016-07-289588-800-1030ND
2016-07-289588-803-1105ND
2016-07-289588-802-1050ND
2016-07-289588-801-1040ND
2016-10-279588-801-1214ND
2016-10-279588-800-12001.60 ppb
2016-10-279588-803-12452.10 ppb
2016-10-279588-802-12301.50 ppb
2017-01-139588-802-10501.90 ppb
2017-01-139588-800-10101.50 ppb
2017-01-139588-801-10201.60 ppb
2017-01-139588-803-10301.60 ppb
2017-04-139588-802-10089.30 ppb
2017-04-139588-800-09309.90 ppb
2017-04-139588-803-10256.40 ppb
2017-04-139588-801-09514.80 ppb
2017-07-209588-802-1040ND
2017-07-209588-800-1014ND
2017-07-209588-803-1140ND
2017-07-209588-801-1025ND
2017-10-129588-801-1140ND
2017-10-129588-800-1125ND
2017-10-129588-803-12103.80 ppb
2017-10-129588-802-11551.10 ppb
2018-01-189588-800-1135ND
2018-01-189588-803-1215ND
2018-01-189588-802-1200ND
2018-01-299588-801-1050ND
2018-01-299588-803-1115ND
2018-04-269588-801-1000ND
2018-04-269588-800-0945ND
2018-04-269588-803-1015ND
2018-04-269588-802-10301.10 ppb
2018-10-119588-800-0755ND
2018-10-119588-802-0830ND
2018-10-119588-803-0820ND
2018-10-119588-801-0805ND
2019-01-089588-803-0814ND
2019-01-089588-802-0856ND
2019-01-089588-801-1005ND
2019-01-089588-800-1056ND
2019-04-099588-801-1115ND
2019-04-099588-800-1100ND
2019-04-099588-803-1145ND
2019-04-099588-802-1130ND
2019-07-109588-800-0910ND
2019-07-109588-803-0940ND
2019-07-109588-802-1005ND
2019-07-109588-801-0925ND
2019-10-089588-800-1145ND
2019-10-089588-803-1230ND
2019-10-089588-802-1215ND
2019-10-089588-801-1200ND