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EWG's Tap Water Database — 2021 UPDATE

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Dichloroacetic acid

Rosamond CSD

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

 

66

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND180ND
20150.0688 ppb161ND - 1.10 ppb
20160.0625 ppb161ND - 1.000 ppb
2017N/A00N/A
2018ND80ND
2019ND80ND

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
2014-03-113761-019-1045ND
2014-03-113761-022-1000ND
2014-03-113761-021-1015ND
2014-03-113761-020-1035ND
2014-06-103761-022-0935ND
2014-06-103761-019-0925ND
2014-06-103761-021-0950ND
2014-06-103761-020-0915ND
2014-09-093761-022-1000ND
2014-09-093761-022-0955ND
2014-09-093761-021-1010ND
2014-09-093761-019-1035ND
2014-09-093761-020-1030ND
2014-09-093761-020-1025ND
2014-12-093761-022-1020ND
2014-12-093761-019-1100ND
2014-12-093761-020-1050ND
2014-12-093761-021-1030ND
2015-03-103761-020-1030ND
2015-03-103761-019-1100ND
2015-03-103761-022-1010ND
2015-03-103761-021-1020ND
2015-06-093761-022-1005ND
2015-06-093761-021-1020ND
2015-06-093761-019-1040ND
2015-06-093761-020-1030ND
2015-09-083761-022-0955ND
2015-09-083761-020-1020ND
2015-09-083761-019-1030ND
2015-09-083761-021-1010ND
2015-12-083761-019-1115ND
2015-12-083761-022-1045ND
2015-12-083761-021-10551.10 ppb
2015-12-083761-020-1105ND
2016-03-083761-021-09251.000 ppb
2016-03-083761-020-0915ND
2016-03-083761-022-0940ND
2016-03-083761-019-0925ND
2016-06-143761-021-1105ND
2016-06-143761-020-1045ND
2016-06-143761-022-1055ND
2016-06-143761-019-1035ND
2016-09-133761-020-1005ND
2016-09-133761-019-1015ND
2016-09-133761-021-1035ND
2016-09-133761-022-1025ND
2016-12-063761-020-0825ND
2016-12-063761-021-0815ND
2016-12-063761-022-0805ND
2016-12-063761-019-0835ND
2018-03-133761-022-1030ND
2018-03-133761-019-1040ND
2018-06-123761-022-1040ND
2018-06-123761-019-1050ND
2018-09-113761-022-1050ND
2018-09-113761-019-1040ND
2018-12-113761-019-1110ND
2018-12-113761-022-1100ND
2019-03-123761-022-1050ND
2019-03-123761-019-1100ND
2019-06-113761-019-1105ND
2019-06-113761-022-1050ND
2019-10-013761-019-1100ND
2019-10-013761-022-1050ND
2019-12-103761-019-1000ND
2019-12-103761-022-1025ND