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EWG's Tap Water Database — 2019 UPDATE

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Dichloroacetic acid

Chesterfield Rural Water

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.

 

68

Samples

0

Samples exceeding legal limit (MCL)

5

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013ND40ND
2014ND160ND
20159.31 ppb164ND - 48.1 ppb
20161.04 ppb161ND - 16.6 ppb
2017ND160ND

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
2013-10-242131025-2ND
2013-10-242131025-3ND
2013-10-242131025-4ND
2013-10-242131025-5ND
2014-02-042140205-43ND
2014-02-042140205-42ND
2014-02-042140205-41ND
2014-02-042140205-40ND
2014-04-232140424-39ND
2014-04-232140424-38ND
2014-04-232140424-37ND
2014-04-232140424-36ND
2014-07-222140723-12ND
2014-07-222140723-13ND
2014-07-222140723-14ND
2014-07-222140723-15ND
2014-10-302141031-5ND
2014-10-302141031-4ND
2014-10-302141031-3ND
2014-10-302141031-2ND
2015-01-282150129-24ND
2015-01-282150129-26ND
2015-01-282150129-27ND
2015-01-28215029-25ND
2015-06-102150611-5ND
2015-06-102150611-4ND
2015-06-102150611-3ND
2015-06-102150611-2ND
2015-07-282150729-21ND
2015-07-282150729-22ND
2015-07-282150729-23ND
2015-08-132150814-14ND
2015-10-272151028-2339.9 ppb
2015-10-272151028-2248.1 ppb
2015-10-272151028-2134.1 ppb
2015-10-272151028-2026.8 ppb
2016-01-252160126-20ND
2016-01-252160126-21ND
2016-01-252160126-23ND
2016-01-252160126-22ND
2016-04-112160412-5ND
2016-04-112160412-4ND
2016-04-112160412-3ND
2016-04-112160412-2ND
2016-07-252160726-04ND
2016-07-252160726-02ND
2016-07-252160726-05ND
2016-07-252160726-0316.6 ppb
2016-10-252161026-05ND
2016-10-252161026-04ND
2016-10-252161026-03ND
2016-10-252161026-02ND
2017-01-242170125-14ND
2017-01-242170125-15ND
2017-01-242170125-16ND
2017-01-242170125-17ND
2017-04-262170427-05ND
2017-04-262170427-04ND
2017-04-262170427-03ND
2017-04-262170427-02ND
2017-07-252170726-08ND
2017-07-252170726-07ND
2017-07-252170726-06ND
2017-07-252170726-05ND
2017-10-252171026-27ND
2017-10-252171026-28ND
2017-10-252171026-29ND
2017-10-252171026-30ND