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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

Santa Monica

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

 

136

Samples

0

Samples exceeding legal limit (MCL)

19

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.334 ppb327ND - 2.80 ppb
20151.78 ppb147ND - 5.90 ppb
2016ND20ND
2017ND240ND
20180.0375 ppb321ND - 1.20 ppb
20190.191 ppb324ND - 2.20 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
2014-03-059590-800-1310ND
2014-03-059590-801-12521.70 ppb
2014-03-059590-802-1245ND
2014-03-059590-803-1300ND
2014-03-059590-804-1258ND
2014-03-059590-805-12392.80 ppb
2014-03-059590-806-1320ND
2014-03-059590-807-1312ND
2014-06-029590-800-08001.20 ppb
2014-06-029590-801-07241.30 ppb
2014-06-029590-802-0837ND
2014-06-029590-803-0739ND
2014-06-029590-804-0819ND
2014-06-029590-805-06481.30 ppb
2014-06-029590-806-0620ND
2014-06-029590-807-0735ND
2014-09-029590-800-0757ND
2014-09-029590-801-07191.20 ppb
2014-09-029590-802-0828ND
2014-09-029590-803-0736ND
2014-09-029590-804-0800ND
2014-09-029590-805-06411.20 ppb
2014-09-029590-806-0713ND
2014-09-029590-807-0724ND
2014-12-019590-800-0809ND
2014-12-019590-801-0736ND
2014-12-019590-802-0858ND
2014-12-019590-803-0750ND
2014-12-019590-804-0836ND
2014-12-019590-805-0656ND
2014-12-019590-806-0734ND
2014-12-019590-807-0744ND
2015-03-029590-800-0820ND
2015-03-029590-801-0735ND
2015-03-029590-802-0809ND
2015-03-029590-803-0755ND
2015-03-029590-804-0751ND
2015-03-029590-805-06352.10 ppb
2015-03-029590-806-0704ND
2015-03-029590-807-0712ND
2015-06-019590-801-07182.80 ppb
2015-06-019590-805-06344.00 ppb
2015-09-019590-801-08134.70 ppb
2015-09-019590-805-08005.90 ppb
2015-12-019590-801-09452.40 ppb
2015-12-019590-805-09353.00 ppb
2016-03-019590-801-0717ND
2016-03-019590-805-0707ND
2017-03-019590-800-0734ND
2017-03-019590-801-0721ND
2017-03-019590-802-0718ND
2017-03-019590-803-0727ND
2017-03-019590-804-0725ND
2017-03-019590-805-0704ND
2017-03-019590-806-0742ND
2017-03-019590-807-0735ND
2017-09-069590-800-0722ND
2017-09-069590-801-0748ND
2017-09-069590-802-0814ND
2017-09-069590-803-0733ND
2017-09-069590-804-0757ND
2017-09-069590-805-0805ND
2017-09-069590-806-0735ND
2017-09-069590-807-0743ND
2017-12-059590-800-0743ND
2017-12-059590-801-0719ND
2017-12-059590-802-0758ND
2017-12-059590-803-0731ND
2017-12-059590-804-0742ND
2017-12-059590-805-0707ND
2017-12-059590-806-0716ND
2017-12-059590-807-0726ND
2018-03-069590-800-0742ND
2018-03-069590-801-0718ND
2018-03-069590-802-0757ND
2018-03-069590-803-0731ND
2018-03-069590-804-0739ND
2018-03-069590-805-0706ND
2018-03-069590-806-0725ND
2018-03-069590-807-0731ND
2018-06-129590-800-0723ND
2018-06-129590-801-0711ND
2018-06-129590-802-0748ND
2018-06-129590-803-0716ND
2018-06-129590-804-0738ND
2018-06-129590-805-0658ND
2018-06-129590-806-0721ND
2018-06-129590-807-0728ND
2018-09-059590-800-0732ND
2018-09-059590-801-0706ND
2018-09-059590-802-0735ND
2018-09-059590-803-0714ND
2018-09-059590-804-0722ND
2018-09-059590-805-0653ND
2018-09-059590-806-0701ND
2018-09-059590-807-0710ND
2018-12-049590-800-0742ND
2018-12-049590-801-0719ND
2018-12-049590-802-0803ND
2018-12-049590-803-0730ND
2018-12-049590-804-0750ND
2018-12-049590-805-07081.20 ppb
2018-12-049590-806-0724ND
2018-12-049590-807-0733ND
2019-03-059590-800-0727ND
2019-03-059590-801-0709ND
2019-03-059590-802-0728ND
2019-03-059590-803-0718ND
2019-03-059590-804-0714ND
2019-03-059590-805-0656ND
2019-03-059590-806-0654ND
2019-03-059590-807-0702ND
2019-06-049590-800-0644ND
2019-06-049590-801-0626ND
2019-06-049590-802-0705ND
2019-06-049590-803-0635ND
2019-06-049590-804-0658ND
2019-06-049590-805-0614ND
2019-06-049590-806-0630ND
2019-06-049590-807-0641ND
2019-09-049590-800-0750ND
2019-09-049590-801-0720ND
2019-09-049590-802-07361.50 ppb
2019-09-049590-803-0740ND
2019-09-049590-804-0723ND
2019-09-049590-805-07002.20 ppb
2019-09-049590-806-0704ND
2019-09-049590-807-0713ND
2019-12-039590-800-0730ND
2019-12-039590-801-0711ND
2019-12-039590-802-08001.20 ppb
2019-12-039590-803-0720ND
2019-12-039590-804-0742ND
2019-12-039590-805-0659ND
2019-12-039590-806-07151.20 ppb
2019-12-039590-807-0725ND