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EWG's Tap Water Database — 2021 UPDATE

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Dichloroacetic acid

Marion 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

 

92

Samples

0

Samples exceeding legal limit (MCL)

40

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND120ND
2015ND160ND
20160.650 ppb168ND - 1.70 ppb
20171.49 ppb168ND - 7.00 ppb
20180.811 ppb16160.420 ppb - 1.40 ppb
20190.451 ppb168ND - 1.40 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
2014-03-14L0040922-02ND
2014-03-14L0040922-01ND
2014-03-14L0040922-02ND
2014-03-14L0040922-01ND
2014-06-1135141749001ND
2014-06-1135141749002ND
2014-06-1135141749002ND
2014-06-1135141749001ND
2014-12-01L0051322-01ND
2014-12-01L0051322-02ND
2014-12-01L0051322-02ND
2014-12-01L0051322-01ND
2015-03-06LA4412-1ND
2015-03-06LA4412-2ND
2015-03-06LA4412-2ND
2015-03-06LA4412-1ND
2015-06-0535192244001ND
2015-06-0535192244002ND
2015-06-0535192244002ND
2015-06-0535192244001ND
2015-09-0235206017001ND
2015-09-0235206017002ND
2015-09-0235206017002ND
2015-09-0235206017001ND
2015-12-03LA41712-2ND
2015-12-03LA41712-2ND
2015-12-03LA14712-1ND
2015-12-03LA14712-1ND
2016-03-18LA18615-11.50 ppb
2016-03-18LA18615-21.70 ppb
2016-03-18LA18615-11.50 ppb
2016-03-18LA18615-21.70 ppb
2016-06-02LA21276-11.000 ppb
2016-06-02LA21276-21.000 ppb
2016-06-02LA21276-11.000 ppb
2016-06-02LA21276-21.000 ppb
2016-09-01LA24967-2ND
2016-09-01LA24967-2ND
2016-09-01LA24967-1ND
2016-09-01LA24967-1ND
2016-12-01LA28126-2ND
2016-12-01LA28126-2ND
2016-12-01LA28126-1ND
2016-12-01LA28126-1ND
2017-03-0235298606008ND
2017-03-0235298606007ND
2017-03-0235298606008ND
2017-03-0235298606007ND
2017-06-19353195310030.630 ppb
2017-06-19353195310040.650 ppb
2017-06-19353195310040.650 ppb
2017-06-19353195310030.630 ppb
2017-09-21353374520033.60 ppb
2017-09-21353374520047.00 ppb
2017-09-21353374520047.00 ppb
2017-09-21353374520033.60 ppb
2017-12-1835364711002ND
2017-12-1835364711001ND
2017-12-1835364711001ND
2017-12-1835364711002ND
2018-03-01353778230010.560 ppb
2018-03-01353778230020.630 ppb
2018-03-01353778230010.560 ppb
2018-03-01353778230020.630 ppb
2018-06-19353998700010.950 ppb
2018-06-19353998700020.810 ppb
2018-06-19353998700010.950 ppb
2018-06-19353998700020.810 ppb
2018-09-18354194260021.20 ppb
2018-09-18354194260011.40 ppb
2018-09-18354194260011.40 ppb
2018-09-18354194260021.20 ppb
2018-12-17354384950010.420 ppb
2018-12-17354384950020.520 ppb
2018-12-17354384950010.420 ppb
2018-12-17354384950020.520 ppb
2019-03-1835456301002ND
2019-03-1835456301001ND
2019-03-1835456301001ND
2019-03-1835456301002ND
2019-06-11354755310020.700 ppb
2019-06-11354755310020.700 ppb
2019-06-11354755310010.660 ppb
2019-06-11354755310010.660 ppb
2019-09-06354956730020.850 ppb
2019-09-06354956730011.40 ppb
2019-09-06354956730011.40 ppb
2019-09-06354956730020.850 ppb
2019-12-0535516919001ND
2019-12-0535516919002ND
2019-12-0535516919001ND
2019-12-0535516919002ND