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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

Hazardville 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

 

80

Samples

0

Samples exceeding legal limit (MCL)

15

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.1000 ppb161ND - 1.60 ppb
2015N/A00N/A
20160.681 ppb166ND - 2.24 ppb
20170.194 ppb162ND - 1.60 ppb
20180.325 ppb164ND - 1.70 ppb
20190.388 ppb162ND - 4.30 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
2014-01-27SB83819-07-CHND
2014-01-27SB83819-08-CHND
2014-01-27SB83819-09-CHND
2014-01-27SB83819-06-CHND
2014-04-21SB87957-07-CHND
2014-04-21SB87957-10-CHND
2014-04-21SB87957-11-CHND
2014-04-21SB87957-12-CHND
2014-07-21SB93129-07-CHND
2014-07-21SB93129-06-CHND
2014-07-21SB93129-05-CHND
2014-07-21SB93129-04-CHND
2014-10-27SB98715-04-CH1.60 ppb
2014-10-27SB98715-05-CHND
2014-10-27SB98715-06-CHND
2014-10-27SB98715-07-CHND
2016-01-25SC17491-04-CHND
2016-01-25SC17491-06-CHND
2016-01-25SC17491-07-CHND
2016-01-25SC17491-05-CH1.35 ppb
2016-04-25SC20556-05-CHND
2016-04-25SC20556-07-CHND
2016-04-25SC20556-06-CHND
2016-04-25SC20556-04-CHND
2016-07-25SC24001-05-CH1.91 ppb
2016-07-25SC24001-06-CH1.60 ppb
2016-07-25SC24001-07-CH1.89 ppb
2016-07-25SC24001-04-CH2.24 ppb
2016-10-24SC27464-05-CHND
2016-10-24SC27464-06-CHND
2016-10-24SC27464-07-CHND
2016-10-24SC27464-04-CH1.90 ppb
2017-01-23SC30880-04-CHND
2017-01-23SC30880-07-CHND
2017-01-23SC30880-06-CHND
2017-01-23SC30880-05-CHND
2017-04-25BY09563HAA5ND
2017-04-25BY09564HAA5ND
2017-04-25BY09565HAA5ND
2017-04-25BY09566HAA5ND
2017-07-24BY72102HAA5ND
2017-07-24BY72099HAA5ND
2017-07-24BY72100HAA51.60 ppb
2017-07-24BY72101HAA5ND
2017-10-23BZ26459HAA51.50 ppb
2017-10-23BZ26460HAA5ND
2017-10-23BZ26461HAA5ND
2017-10-23BZ26458HAA5ND
2018-01-22BZ78627HAA5ND
2018-01-22BZ78628HAA51.10 ppb
2018-01-22BZ78629HAA5ND
2018-01-22BZ78630HAA5ND
2018-04-23CA35127HAA51.10 ppb
2018-04-23CA35129HAA5ND
2018-04-23CA35128HAA5ND
2018-04-23CA35126HAA5ND
2018-07-23CA96762ND
2018-07-23CA967631.30 ppb
2018-07-23CA96764ND
2018-07-23CA96765ND
2018-10-22CB80395ND
2018-10-22CB803931.70 ppb
2018-10-22CB80392ND
2018-10-22CB80394ND
2019-01-21CC32630ND
2019-01-21CC32631ND
2019-01-21CC32632ND
2019-01-21CC326334.30 ppb
2019-04-22CC99843ND
2019-04-22CC99842ND
2019-04-22CC99841ND
2019-04-22CC99840ND
2019-07-22CD63255ND
2019-07-22CD632561.90 ppb
2019-07-22CD63257ND
2019-07-22CD63258ND
2019-10-21CE45705ND
2019-10-21CE45706ND
2019-10-21CE45707ND
2019-10-21CE45708ND