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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

Memorial Villages Water Authority

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)

52

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20144.85 ppb882.30 ppb - 6.10 ppb
20159.88 ppb884.50 ppb - 20.6 ppb
20166.14 ppb168ND - 36.3 ppb
20171.73 ppb167ND - 6.80 ppb
20184.15 ppb1612ND - 9.50 ppb
20193.07 ppb169ND - 8.90 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
2014-02-19AC435834.40 ppb
2014-02-19AC435375.00 ppb
2014-05-12AC538712.30 ppb
2014-05-12AC539025.50 ppb
2014-07-22AC606014.60 ppb
2014-07-22AC605544.90 ppb
2014-10-17AC700666.00 ppb
2014-10-17AC700626.10 ppb
2015-01-23AC777554.50 ppb
2015-01-23AC777544.90 ppb
2015-05-15AC922669.70 ppb
2015-05-15AC9226911.4 ppb
2015-07-10AC990816.70 ppb
2015-07-10AC9907815.7 ppb
2015-12-11AD167545.50 ppb
2015-12-11AD1675020.6 ppb
2016-01-20AD1888421.5 ppb
2016-01-20AD188934.40 ppb
2016-01-20AD188924.50 ppb
2016-01-20AD188916.10 ppb
2016-04-26AD341568.60 ppb
2016-04-26AD341557.80 ppb
2016-04-26AD341539.00 ppb
2016-04-26AD3415736.3 ppb
2016-07-20AD44904ND
2016-07-20AD44898ND
2016-07-20AD44899ND
2016-07-20AD44897ND
2016-10-05AD52550ND
2016-10-05AD52563ND
2016-10-05AD52566ND
2016-10-05AD52567ND
2017-01-04AD62962ND
2017-01-04AD62969ND
2017-01-04AD62964ND
2017-01-04AD62963ND
2017-04-19AD801303.80 ppb
2017-04-19AD801342.50 ppb
2017-04-19AD801261.90 ppb
2017-04-19AD801311.40 ppb
2017-08-17AD933536.80 ppb
2017-08-17AD933516.50 ppb
2017-08-17AD933544.70 ppb
2017-08-17AD93350ND
2017-10-06AD99772ND
2017-10-06AD99784ND
2017-10-06AD99773ND
2017-10-06AD99789ND
2018-01-22AE094724.20 ppb
2018-01-22AE09484ND
2018-01-22AE094753.60 ppb
2018-01-22AE094744.30 ppb
2018-04-06AE216499.50 ppb
2018-04-06AE216518.90 ppb
2018-04-06AE216489.00 ppb
2018-04-06AE216502.00 ppb
2018-08-03AE358001.90 ppb
2018-08-03AE35799ND
2018-08-03AE35798ND
2018-08-03AE35797ND
2018-11-07AE456115.40 ppb
2018-11-07AE456145.80 ppb
2018-11-07AE456135.70 ppb
2018-11-07AE456106.10 ppb
2019-02-11AE537258.00 ppb
2019-02-11AE537247.00 ppb
2019-02-11AE537236.90 ppb
2019-02-11AE537208.10 ppb
2019-04-01AE60631ND
2019-04-01AE60628ND
2019-04-01AE60626ND
2019-04-01AE60630ND
2019-07-12AE74335ND
2019-07-12AE74337ND
2019-07-12AE74336ND
2019-07-12AE743404.90 ppb
2019-10-07AE857918.90 ppb
2019-10-07AE858041.80 ppb
2019-10-07AE857951.30 ppb
2019-10-07AE857902.20 ppb