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EWG's Tap Water Database — 2021 UPDATE

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Dichloroacetic acid

Farmerville Water System

Dichloroacetic 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

 

78

Samples

0

Samples exceeding legal limit (MCL)

36

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.900 ppb42ND - 1.80 ppb
20150.275 ppb82ND - 1.10 ppb
20160.425 ppb164ND - 2.30 ppb
20170.789 ppb184ND - 3.80 ppb
20180.616 ppb1610ND - 1.40 ppb
20191.75 ppb1614ND - 5.20 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.2 ppb

The EWG Health Guideline of 0.2 ppb for dichloroacetic 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
2014-08-27L0047420-02ND
2014-08-27L0047420-011.80 ppb
2014-08-27L0047420-02ND
2014-08-27L0047420-011.80 ppb
2015-08-1235202965001ND
2015-08-1235202965002ND
2015-08-1235202965002ND
2015-08-1235202965001ND
2015-11-10352163290011.10 ppb
2015-11-1035216329002ND
2015-11-1035216329002ND
2015-11-10352163290011.10 ppb
2016-02-03LA16930-11.10 ppb
2016-02-03LA16930-2ND
2016-02-03LA16930-2ND
2016-02-03LA16930-11.10 ppb
2016-05-11LA20591-12.30 ppb
2016-05-11LA20591-2ND
2016-05-11LA20591-2ND
2016-05-11LA20591-12.30 ppb
2016-08-17LA24430-1ND
2016-08-17LA24430-2ND
2016-08-17LA24430-2ND
2016-08-17LA24430-1ND
2016-11-23LA27915-1ND
2016-11-23LA27915-2ND
2016-11-23LA27915-2ND
2016-11-23LA27915-1ND
2017-02-0235292874013ND
2017-02-0235292874014ND
2017-02-0235292874013ND
2017-02-0235292874014ND
2017-04-2535308473004ND
2017-04-2535308473004ND
2017-05-1535312642006ND
2017-05-1535312642005ND
2017-05-1535312642005ND
2017-05-1535312642006ND
2017-08-17353311340083.80 ppb
2017-08-17353311340073.30 ppb
2017-08-17353311340083.80 ppb
2017-08-17353311340073.30 ppb
2017-12-2135365020002ND
2017-12-2135365020001ND
2017-12-2135365020002ND
2017-12-2135365020001ND
2018-02-22353761980010.810 ppb
2018-02-2235376198002ND
2018-02-22353761980010.810 ppb
2018-02-2235376198002ND
2018-05-23353945810010.600 ppb
2018-05-2335394581002ND
2018-05-23353945810010.600 ppb
2018-05-2335394581002ND
2018-08-20354127980011.40 ppb
2018-08-20354127980020.720 ppb
2018-08-20354127980011.40 ppb
2018-08-20354127980020.720 ppb
2018-11-19354323880011.40 ppb
2018-11-1935432388002ND
2018-11-19354323880011.40 ppb
2018-11-1935432388002ND
2019-02-25354509660020.830 ppb
2019-02-25354509660015.20 ppb
2019-02-25354509660015.20 ppb
2019-02-25354509660020.830 ppb
2019-05-1335469328002ND
2019-05-1335469328002ND
2019-05-13354693280010.580 ppb
2019-05-13354693280010.580 ppb
2019-08-14354912130021.80 ppb
2019-08-14354912130012.00 ppb
2019-08-14354912130012.00 ppb
2019-08-14354912130021.80 ppb
2019-11-18355140820011.50 ppb
2019-11-18355140820022.10 ppb
2019-11-18355140820011.50 ppb
2019-11-18355140820022.10 ppb