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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

Bangor Water District

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

 

96

Samples

0

Samples exceeding legal limit (MCL)

39

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.73 ppb165ND - 6.80 ppb
20151.08 ppb167ND - 3.50 ppb
20161.49 ppb167ND - 5.90 ppb
20171.03 ppb168ND - 2.40 ppb
20181.30 ppb164ND - 5.80 ppb
20191.09 ppb168ND - 4.00 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
2014-01-14ND
2014-01-14ND
2014-01-14ND
2014-01-14ND
2014-04-14ND
2014-04-14ND
2014-04-14ND
2014-04-146.80 ppb
2014-07-14ND
2014-07-14ND
2014-07-14ND
2014-07-14ND
2014-10-105.10 ppb
2014-10-145.40 ppb
2014-10-145.00 ppb
2014-10-145.40 ppb
2015-01-13K000170001ND
2015-01-13K000173001ND
2015-01-13K000172001ND
2015-01-13K000171001ND
2015-04-13K012997001ND
2015-04-13K012998001ND
2015-04-13K012999001ND
2015-04-13K013000001ND
2015-07-13K0267100011.30 ppb
2015-07-13K026708001ND
2015-07-13K0267090011.30 ppb
2015-07-13K0267110011.30 ppb
2015-10-13K0419840013.30 ppb
2015-10-13K0419850013.20 ppb
2015-10-13K0419860013.50 ppb
2015-10-13K0419870013.30 ppb
2016-01-12L001067001ND
2016-01-12L001068001ND
2016-01-12L001069001ND
2016-01-12L001070001ND
2016-04-12L012476001ND
2016-04-12L012475001ND
2016-04-12L012474001ND
2016-04-12L012473001ND
2016-07-12L0276420011.60 ppb
2016-07-12L0276410011.30 ppb
2016-07-12L0276400011.60 ppb
2016-07-12L027639001ND
2016-10-13L0425070014.30 ppb
2016-10-13L0425060014.20 ppb
2016-10-13L0425050015.00 ppb
2016-10-13L0425080015.90 ppb
2017-01-11M001329001ND
2017-01-11M001332001ND
2017-01-11M001331001ND
2017-01-11M001330001ND
2017-04-111704137-01ND
2017-04-111704138-01ND
2017-04-111704139-01ND
2017-04-111704140-01ND
2017-07-111710861-011.90 ppb
2017-07-111710860-011.60 ppb
2017-07-111710859-012.00 ppb
2017-07-111710858-011.60 ppb
2017-10-111716911-012.40 ppb
2017-10-111716908-012.30 ppb
2017-10-111716909-012.30 ppb
2017-10-111716910-012.40 ppb
2018-01-101801067-01ND
2018-01-101801065-01ND
2018-01-101801066-01ND
2018-01-101801068-01ND
2018-04-111806864-01ND
2018-04-111806860-01ND
2018-04-111806861-01ND
2018-04-111806863-01ND
2018-07-131813796-01ND
2018-07-131813797-01ND
2018-07-131813798-01ND
2018-07-131813799-01ND
2018-10-101820252-015.10 ppb
2018-10-101820254-015.80 ppb
2018-10-101820255-014.70 ppb
2018-10-101820253-015.20 ppb
2019-01-141900926-01ND
2019-01-141900928-01ND
2019-01-141900927-01ND
2019-01-141900929-01ND
2019-04-101905668-01ND
2019-04-101905665-01ND
2019-04-101905667-01ND
2019-04-101905666-01ND
2019-07-101912003-011.90 ppb
2019-07-101912004-012.00 ppb
2019-07-101912005-011.70 ppb
2019-07-101912002-012.00 ppb
2019-10-101918382-014.00 ppb
2019-10-101918381-012.00 ppb
2019-10-101918379-011.90 ppb
2019-10-101918380-012.00 ppb