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EWG's Tap Water Database — 2019 UPDATE

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Trichloroacetic acid

Ward Nine Water System

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.

 

36

Samples

0

Samples exceeding legal limit (MCL)

16

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND40ND
2014ND40ND
2015ND40ND
2016ND40ND
20171.79 ppb1816ND - 4.20 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.5 ppb

The EWG Health Guideline of 0.5 ppb for trichloroacetic acid was defined by the Environmental Protection Agency as 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
2012-09-061147962ND
2012-09-061147962ND
2013-08-13L0033143-01ND
2013-08-13L0033143-02ND
2013-08-13L0033143-01ND
2013-08-13L0033143-02ND
2014-08-211328445ND
2014-08-211328444ND
2014-08-211328445ND
2014-08-211328444ND
2015-08-101418299ND
2015-08-101418299ND
2015-08-101418300ND
2015-08-101418300ND
2016-08-121515881ND
2016-08-121515882ND
2016-08-121515882ND
2016-08-121515881ND
2017-02-14352960860200.830 ppb
2017-02-14352960860190.870 ppb
2017-02-14352960860200.830 ppb
2017-02-14352960860190.870 ppb
2017-05-0935312027012ND
2017-05-09353120270110.730 ppb
2017-05-09353120270110.730 ppb
2017-05-0935312027012ND
2017-08-10353299500474.20 ppb
2017-08-10353299500463.90 ppb
2017-08-10353299500474.20 ppb
2017-08-10353299500463.90 ppb
2017-09-01353349590022.40 ppb
2017-09-01353349590022.40 ppb
2017-11-13353495110021.50 ppb
2017-11-13353495110011.70 ppb
2017-11-13353495110021.50 ppb
2017-11-13353495110011.70 ppb