Dichloroacetic acid
Holmesville 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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | ND | 18 | 0 | ND |
2015 | ND | 16 | 0 | ND |
2016 | ND | 16 | 0 | ND |
2017 | 0.814 ppb | 16 | 10 | ND - 1.70 ppb |
2018 | 0.0950 ppb | 16 | 4 | ND - 0.420 ppb |
2019 | 0.643 ppb | 16 | 10 | ND - 1.80 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 |
---|---|---|
2014-01-02 | 1267766 | ND |
2014-01-02 | 1267765 | ND |
2014-01-02 | 1267766 | ND |
2014-01-02 | 1267765 | ND |
2014-04-01 | 1289930 | ND |
2014-04-01 | ANALAB | ND |
2014-04-01 | 1289929 | ND |
2014-04-01 | ANALAB | ND |
2014-04-01 | 1289930 | ND |
2014-04-01 | 1289929 | ND |
2014-07-07 | 1315679 | ND |
2014-07-07 | 1315680 | ND |
2014-07-07 | 1315680 | ND |
2014-07-07 | 1315679 | ND |
2014-10-02 | 1339543 | ND |
2014-10-02 | 1339544 | ND |
2014-10-02 | 1339544 | ND |
2014-10-02 | 1339543 | ND |
2015-01-05 | 1361640 | ND |
2015-01-05 | 1361641 | ND |
2015-01-05 | 1361641 | ND |
2015-01-05 | 1361640 | ND |
2015-03-30 | 1383077 | ND |
2015-03-30 | 1383076 | ND |
2015-03-30 | 1383077 | ND |
2015-03-30 | 1383076 | ND |
2015-07-01 | 1407133 | ND |
2015-07-01 | 1407133 | ND |
2015-07-01 | 1407132 | ND |
2015-07-01 | 1407132 | ND |
2015-10-05 | 1432805 | ND |
2015-10-05 | 1432806 | ND |
2015-10-05 | 1432805 | ND |
2015-10-05 | 1432806 | ND |
2016-01-04 | 1455638 | ND |
2016-01-04 | 1455639 | ND |
2016-01-04 | 1455638 | ND |
2016-01-04 | 1455639 | ND |
2016-04-06 | 1481776 | ND |
2016-04-06 | 1481775 | ND |
2016-04-06 | 1481776 | ND |
2016-04-06 | 1481775 | ND |
2016-07-05 | 1504266 | ND |
2016-07-05 | 1504266 | ND |
2016-07-05 | 1504265 | ND |
2016-07-05 | 1504265 | ND |
2016-10-03 | 1529970 | ND |
2016-10-03 | 1529970 | ND |
2016-10-03 | 1529969 | ND |
2016-10-03 | 1529969 | ND |
2017-01-19 | 35290141006 | ND |
2017-01-19 | 35290141005 | ND |
2017-01-19 | 35290141006 | ND |
2017-01-19 | 35290141005 | ND |
2017-04-19 | 35307674007 | 1.30 ppb |
2017-04-19 | 35307674007 | 1.30 ppb |
2017-04-19 | 35307674008 | 1.30 ppb |
2017-04-19 | 35307674008 | 1.30 ppb |
2017-07-25 | 35326233002 | 0.610 ppb |
2017-07-25 | 35326233001 | ND |
2017-07-25 | 35326233002 | 0.610 ppb |
2017-07-25 | 35326233001 | ND |
2017-10-05 | 35340663001 | 1.60 ppb |
2017-10-05 | 35340663002 | 1.70 ppb |
2017-10-05 | 35340663001 | 1.60 ppb |
2017-10-05 | 35340663002 | 1.70 ppb |
2018-01-12 | 35368391002 | ND |
2018-01-12 | 35368391002 | ND |
2018-01-12 | 35368391001 | ND |
2018-01-12 | 35368391001 | ND |
2018-04-11 | 35386282002 | 0.340 ppb |
2018-04-11 | 35386282001 | 0.420 ppb |
2018-04-11 | 35386282001 | 0.420 ppb |
2018-04-11 | 35386282002 | 0.340 ppb |
2018-07-05 | 35402792002 | ND |
2018-07-05 | 35402792001 | ND |
2018-07-05 | 35402792002 | ND |
2018-07-05 | 35402792001 | ND |
2018-10-11 | 35424029002 | ND |
2018-10-11 | 35424029001 | ND |
2018-10-11 | 35424029001 | ND |
2018-10-11 | 35424029002 | ND |
2019-01-16 | 35442894002 | ND |
2019-01-16 | 35442894001 | 1.80 ppb |
2019-01-16 | 35442894001 | 1.80 ppb |
2019-01-16 | 35442894002 | ND |
2019-04-10 | 35461251002 | ND |
2019-04-10 | 35461251002 | ND |
2019-04-10 | 35461251001 | ND |
2019-04-10 | 35461251001 | ND |
2019-07-17 | 35483189002 | 0.400 ppb |
2019-07-17 | 35483189001 | 0.900 ppb |
2019-07-17 | 35483189001 | 0.900 ppb |
2019-07-17 | 35483189002 | 0.400 ppb |
2019-10-17 | 35506297001 | 1.50 ppb |
2019-10-17 | 35506297002 | 0.540 ppb |
2019-10-17 | 35506297001 | 1.50 ppb |
2019-10-17 | 35506297002 | 0.540 ppb |