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EWG's Tap Water Database — 2021 UPDATE

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Dichloroacetic acid

Polk County Water Authority

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

 

96

Samples

0

Samples exceeding legal limit (MCL)

10

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.138 ppb162ND - 1.10 ppb
2015ND160ND
20160.188 ppb161ND - 3.00 ppb
20170.388 ppb163ND - 2.20 ppb
20180.319 ppb163ND - 2.40 ppb
20190.125 ppb161ND - 2.00 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
2014-03-13AI36008ND
2014-03-13AI36007ND
2014-03-13AI360061.10 ppb
2014-03-13AI36005ND
2014-06-12AI43152ND
2014-06-12AI43151ND
2014-06-12AI431501.10 ppb
2014-06-12AI43149ND
2014-09-09AI52857ND
2014-09-09AI52856ND
2014-09-09AI52858ND
2014-09-09AI52859ND
2014-12-08AI60842ND
2014-12-08AI60841ND
2014-12-08AI60840ND
2014-12-08AI60839ND
2015-03-09AI68505ND
2015-03-09AI68504ND
2015-03-09AI68503ND
2015-03-09AI68502ND
2015-06-09AI79258ND
2015-06-09AI79259ND
2015-06-09AI79261ND
2015-06-09AI79260ND
2015-09-08AI89017ND
2015-09-08AI89016ND
2015-09-08AI89015ND
2015-09-08AI89014ND
2015-12-14AJ02732ND
2015-12-14AJ02731ND
2015-12-14AJ02730ND
2015-12-14AJ02729ND
2016-03-14AJ08112ND
2016-03-14AJ08111ND
2016-03-14AJ08113ND
2016-03-14AJ08114ND
2016-06-13AJ13981ND
2016-06-13AJ13980ND
2016-06-13AJ13979ND
2016-06-13AJ13978ND
2016-09-13AJ27009ND
2016-09-13AJ27008ND
2016-09-13AJ270073.00 ppb
2016-09-13AJ27006ND
2016-12-12AJ36565ND
2016-12-12AJ36568ND
2016-12-12AJ36567ND
2016-12-12AJ36566ND
2017-03-14AJ48034ND
2017-03-14AJ48033ND
2017-03-14AJ48032ND
2017-03-14AJ48031ND
2017-06-06AJ567942.20 ppb
2017-06-06AJ56793ND
2017-06-06AJ567922.00 ppb
2017-06-06AJ567912.00 ppb
2017-09-11AJ67460ND
2017-09-11AJ67459ND
2017-09-11AJ67461ND
2017-09-11AJ67462ND
2017-12-12AJ75274ND
2017-12-12AJ75273ND
2017-12-12AJ75272ND
2017-12-12AJ75271ND
2018-03-13AJ85868ND
2018-03-13AJ85867ND
2018-03-13AJ858661.20 ppb
2018-03-13AJ85865ND
2018-06-11AJ91168ND
2018-06-11AJ91169ND
2018-06-11AJ91171ND
2018-06-11AJ91170ND
2018-09-11AK00511ND
2018-09-11AK00510ND
2018-09-11AK00509ND
2018-09-11AK00508ND
2018-12-05AK073582.40 ppb
2018-12-05AK073571.50 ppb
2018-12-05AK07356ND
2018-12-05AK07355ND
2019-03-11AK130072.00 ppb
2019-03-11AK13006ND
2019-03-11AK13008ND
2019-03-11AK13009ND
2019-06-11AK19406ND
2019-06-11AK19405ND
2019-06-11AK19404ND
2019-06-11AK19403ND
2019-09-10AK29969ND
2019-09-10AK29968ND
2019-09-10AK29967ND
2019-09-10AK29966ND
2019-12-10AK37966ND
2019-12-10AK37969ND
2019-12-10AK37968ND
2019-12-10AK37967ND