Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Dichloroacetic acid

City of Hereford

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)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND160ND
2015ND160ND
2016ND160ND
2017ND160ND
2018ND160ND
2019ND160ND

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
2014-02-12Q1404321003ND
2014-02-12Q1404321002ND
2014-02-12Q1404321001ND
2014-02-12Q1404321029ND
2014-06-04Q1419262005ND
2014-06-04Q1419262004ND
2014-06-04Q1419262003ND
2014-06-04Q1419262002ND
2014-08-07Q1434599002ND
2014-08-07Q1434599001ND
2014-08-07Q1434599003ND
2014-08-07Q1434599004ND
2014-10-16Q1452918004ND
2014-10-16Q1452918003ND
2014-10-16Q1452918002ND
2014-10-16Q1452918001ND
2015-01-29Q1503619016ND
2015-01-29Q1503619015ND
2015-01-29Q1503619023ND
2015-01-29Q1503619022ND
2015-04-14Q1514098001ND
2015-04-14Q1514098002ND
2015-04-14Q1514098004ND
2015-04-14Q1514098003ND
2015-09-15Q1535782003ND
2015-09-15Q1535782002ND
2015-09-15Q1535782001ND
2015-09-15Q1535782004ND
2015-11-23Q1546384004ND
2015-11-23Q1546384003ND
2015-11-23Q1546384002ND
2015-11-23Q1546384001ND
2016-02-10Q1605969010ND
2016-02-10Q1605969009ND
2016-02-10Q1605969011ND
2016-02-10Q1605969012ND
2016-05-12Q1619085004ND
2016-05-12Q1619085003ND
2016-05-12Q1619085002ND
2016-05-12Q1619085001ND
2016-09-15Q1637842004ND
2016-09-15Q1637842003ND
2016-09-15Q1637842002ND
2016-09-15Q1637842001ND
2016-10-18Q1644175002ND
2016-10-18Q1644175004ND
2016-10-18Q1644175001ND
2016-10-18Q1644175003ND
2017-01-17Q1702053013ND
2017-01-17Q1702053005ND
2017-01-17Q1702053012ND
2017-01-17Q1702053004ND
2017-05-09Q1718998015ND
2017-05-09Q1718998014ND
2017-05-09Q1718998013ND
2017-05-09Q1718998012ND
2017-07-13Q1728901009ND
2017-07-13Q1728901005ND
2017-07-13Q1728901006ND
2017-07-13Q1728901010ND
2017-10-12Q1752577004ND
2017-10-12Q1752577002ND
2017-10-12Q1752577003ND
2017-10-12Q1752577001ND
2018-01-16Q1801777006ND
2018-01-16Q1801777001ND
2018-01-16Q1801777005ND
2018-01-16Q1801777007ND
2018-04-12Q1815215003ND
2018-04-12Q1815215009ND
2018-04-12Q1815215010ND
2018-04-12Q1815215004ND
2018-08-01Q1830563009ND
2018-08-01Q1830563008ND
2018-08-01Q1830563007ND
2018-08-01Q1830563006ND
2018-10-11Q1840697002ND
2018-10-11Q1840697006ND
2018-10-11Q1840697001ND
2018-10-11Q1840697005ND
2019-01-17Q1902747003ND
2019-01-17Q1902747008ND
2019-01-17Q1902747009ND
2019-01-17Q1902747004ND
2019-04-23Q1916150005ND
2019-04-23Q1916150010ND
2019-04-23Q1916150004ND
2019-04-23Q1916150009ND
2019-07-08Q1942256009ND
2019-07-08Q1942256008ND
2019-07-08Q1942256007ND
2019-07-08Q1942256006ND
2019-10-15Q1972637004ND
2019-10-15Q1972637003ND
2019-10-15Q1972637002ND
2019-10-15Q1972637001ND