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EWG's Tap Water Database — 2021 UPDATE

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Dichloroacetic acid

Avon Water Company

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

 

80

Samples

0

Samples exceeding legal limit (MCL)

23

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.114 ppb163ND - 0.750 ppb
2015N/A00N/A
20160.218 ppb164ND - 1.80 ppb
20170.309 ppb167ND - 1.10 ppb
20180.0313 ppb161ND - 0.500 ppb
20190.375 ppb168ND - 1.10 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
2014-01-16E401A25-2CHND
2014-01-16E401A25-3CHND
2014-01-16E401A25-4CHND
2014-01-16E401A25-1CHND
2014-04-15E404E43-1CHND
2014-04-15E404E43-2CHND
2014-04-15E404E43-3CHND
2014-04-15E404E43-4CHND
2014-07-14E407C09-4GEND
2014-07-14E407C09-3GE0.750 ppb
2014-07-14E407C09-2GEND
2014-07-14E407C09-1GEND
2014-10-16E410F41-1GEND
2014-10-16E410F41-2GE0.530 ppb
2014-10-16E410F41-3GEND
2014-10-16E410F41-4GE0.550 ppb
2016-01-15E601D17-1GE0.560 ppb
2016-01-15E601D17-2GE0.530 ppb
2016-01-15E601D17-3GEND
2016-01-15E601D17-4GEND
2016-04-19E605079-2GEND
2016-04-19E605079-4GEND
2016-04-19E605079-3GEND
2016-04-19E605079-1GEND
2016-07-13E607C00-2GEND
2016-07-13E607C00-3GE0.600 ppb
2016-07-13E607C00-4GEND
2016-07-13E607C00-1GE1.80 ppb
2016-10-14E610G73-1GEND
2016-10-14E610G73-2GEND
2016-10-14E610G73-3GEND
2016-10-14E610G73-4GEND
2017-01-13E701C67-1GE0.640 ppb
2017-01-13E701C67-4GEND
2017-01-13E701C67-3GEND
2017-01-13E701C67-2GEND
2017-04-13D7D1107-01HA5ND
2017-04-13D7D1107-02HA50.600 ppb
2017-04-13D7D1107-03HA5ND
2017-04-13D7D1107-04HA5ND
2017-07-14D7G1331-04HA5ND
2017-07-14D7G1331-01HA50.600 ppb
2017-07-14D7G1331-02HA51.10 ppb
2017-07-14D7G1331-03HA50.800 ppb
2017-10-13D7J1362-02HA50.600 ppb
2017-10-13D7J1362-03HA5ND
2017-10-13D7J1362-04HA5ND
2017-10-13D7J1362-01HA50.600 ppb
2018-01-24D8A1669-01HA5ND
2018-01-24D8A1669-02HA5ND
2018-01-24D8A1669-03HA5ND
2018-01-24D8A1669-04HA5ND
2018-04-25D8D2151-09HA5ND
2018-04-25D8D2151-11HA50.500 ppb
2018-04-25D8D2151-10HA5ND
2018-04-25D8D2151-08HA5ND
2018-07-26CA98743ND
2018-07-26CA98744ND
2018-07-26CA98745ND
2018-07-26CA98746ND
2018-10-09DBP 200508678ND
2018-10-09DBP 200508665ND
2018-10-09DBP 200508664ND
2018-10-09DBP 200508676ND
2019-01-08DBP 200518131ND
2019-01-08DBP 200518132ND
2019-01-08DBP 200518133ND
2019-01-08DBP 200518135ND
2019-04-11DBP 2005282700.600 ppb
2019-04-11DBP 200528269ND
2019-04-11DBP 2005282680.800 ppb
2019-04-11DBP 200528267ND
2019-07-02DBP 200538992ND
2019-07-02DBP 2005389931.10 ppb
2019-07-02DBP 2005389950.600 ppb
2019-07-02DBP 2005389961.000 ppb
2019-10-03DBP 200551429ND
2019-10-03DBP 2005514300.600 ppb
2019-10-03DBP 2005514310.600 ppb
2019-10-03DBP 2005514320.700 ppb