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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

Maywood Mutual Water Company #3

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

 

48

Samples

0

Samples exceeding legal limit (MCL)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.513 ppb83ND - 1.70 ppb
2015ND80ND
20160.225 ppb81ND - 1.80 ppb
2017ND80ND
20180.175 ppb81ND - 1.40 ppb
20190.375 ppb81ND - 3.00 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
2014-01-213761-801-1330ND
2014-01-213761-800-1400ND
2014-04-033761-801-09001.10 ppb
2014-04-033761-800-09201.30 ppb
2014-07-103761-801-0855ND
2014-07-103761-800-09051.70 ppb
2014-10-083761-801-1020ND
2014-10-083761-800-1000ND
2015-01-093761-800-0830ND
2015-01-093761-801-0845ND
2015-04-093761-800-1330ND
2015-04-093761-801-1345ND
2015-07-083761-800-0845ND
2015-07-083761-801-0830ND
2015-10-083761-800-0900ND
2015-10-083761-801-0920ND
2016-01-143761-800-1110ND
2016-01-143761-801-1130ND
2016-04-183761-800-1515ND
2016-04-183761-801-1500ND
2016-07-073761-800-0845ND
2016-07-073761-801-08151.80 ppb
2016-10-063761-800-1400ND
2016-10-063761-801-1340ND
2017-01-123761-801-1150ND
2017-01-123761-800-1250ND
2017-04-063761-801-1130ND
2017-04-063761-800-1110ND
2017-07-053761-801-0920ND
2017-07-053761-800-0850ND
2017-10-053761-801-0934ND
2017-10-053761-800-0915ND
2018-01-123761-800-0955ND
2018-01-123761-801-0940ND
2018-04-053761-800-0830ND
2018-04-053761-801-0810ND
2018-07-053761-801-0945ND
2018-07-053761-800-1000ND
2018-10-033761-801-14051.40 ppb
2018-10-033761-800-1415ND
2019-01-103761-801-13453.00 ppb
2019-01-103761-800-1400ND
2019-04-183761-801-1540ND
2019-04-183761-800-1520ND
2019-07-103761-801-1315ND
2019-07-103761-800-1340ND
2019-10-023761-801-1325ND
2019-10-023761-800-1400ND