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EWG's Tap Water Database — 2019 UPDATE

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Trichloroacetic acid

Brewster Water Department

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.

 

48

Samples

0

Samples exceeding legal limit (MCL)

8

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
2014N/A00N/A
20150.188 ppb163ND - 1.90 ppb
20160.0750 ppb161ND - 1.20 ppb
20170.306 ppb164ND - 2.40 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 Result
2015-02-10ND
2015-02-10ND
2015-02-10ND
2015-02-10ND
2015-05-070.520 ppb
2015-05-070.590 ppb
2015-05-071.90 ppb
2015-05-07ND
2015-08-05ND
2015-08-05ND
2015-08-05ND
2015-08-05ND
2015-11-02ND
2015-11-02ND
2015-11-02ND
2015-11-02ND
2016-02-02ND
2016-02-02ND
2016-02-02ND
2016-02-021.20 ppb
2016-05-04ND
2016-05-04ND
2016-05-04ND
2016-05-04ND
2016-08-01ND
2016-08-01ND
2016-08-01ND
2016-08-12ND
2016-11-08ND
2016-11-08ND
2016-11-08ND
2016-11-08ND
2017-02-06ND
2017-02-06ND
2017-02-062.40 ppb
2017-02-06ND
2017-05-03ND
2017-05-03ND
2017-05-03ND
2017-05-03ND
2017-08-02ND
2017-08-02ND
2017-08-02ND
2017-08-02ND
2017-11-090.630 ppb
2017-11-090.760 ppb
2017-11-091.10 ppb
2017-11-09ND