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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

White Fence Farms Mutual Water Company

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

 

49

Samples

0

Samples exceeding legal limit (MCL)

9

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND80ND
2015ND80ND
2016ND90ND
20171.84 ppb84ND - 5.30 ppb
20180.150 ppb81ND - 1.20 ppb
20190.638 ppb84ND - 1.40 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
2014-03-103761-801-0927ND
2014-03-103761-800-0905ND
2014-06-093761-801-0940ND
2014-06-093761-800-0915ND
2014-09-083761-801-0925ND
2014-09-083761-800-0900ND
2014-12-083761-801-1530ND
2014-12-083761-800-1500ND
2015-03-093761-800-0910ND
2015-03-093761-801-0845ND
2015-06-093761-800-0835ND
2015-06-093761-801-0855ND
2015-09-083761-800-0915ND
2015-09-083761-801-0950ND
2015-12-213761-800-0843ND
2015-12-213761-801-0857ND
2016-03-083761-800-0900ND
2016-03-083761-801-0920ND
2016-06-143761-800-0930ND
2016-06-143761-801-1010ND
2016-07-043761-800-0900ND
2016-09-123761-800-1230ND
2016-09-123761-801-1255ND
2016-12-133761-800-1055ND
2016-12-133761-801-1035ND
2017-03-133761-800-08004.90 ppb
2017-03-133761-801-08355.30 ppb
2017-06-123761-801-1345ND
2017-06-123761-800-1330ND
2017-09-123761-800-1115ND
2017-09-123761-801-1130ND
2017-12-123761-800-11152.30 ppb
2017-12-123761-801-11452.20 ppb
2018-03-133761-800-11501.20 ppb
2018-03-133761-801-1145ND
2018-06-123761-801-1110ND
2018-06-123761-800-1100ND
2018-09-103761-801-0755ND
2018-09-103761-800-0730ND
2018-12-103761-801-0950ND
2018-12-103761-800-0920ND
2019-03-113761-801-09351.40 ppb
2019-03-113761-800-09011.40 ppb
2019-06-103761-801-0845ND
2019-06-103761-800-0806ND
2019-09-093761-801-1010ND
2019-09-093761-800-0930ND
2019-12-093761-801-10001.10 ppb
2019-12-093761-800-09201.20 ppb