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Dichloroacetic acid

Farmington City 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.

 

44

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20100.275 ppb41ND - 1.10 ppb
2011ND40ND
2012ND80ND
20130.342 ppb123ND - 1.90 ppb
2014ND80ND
20150.138 ppb81ND - 1.10 ppb

ppb = parts per billion.

State and national drinking water standards and health guidelines

Health Guideline 0.7 ppb

The health guideline of 0.7 ppb for dichloroacetic acid was defined by the Environmental Protection Agency as 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.

EPA Maximum Contaminant
Level Goal (MCLG)0 ppb

A non-enforceable federal health guideline. For cancer-causing chemicals, these health goals are typically set to zero.

ppb = parts per billion.

All test results

Date Result
2010-09-131.10 ppb
2010-09-13ND
2010-09-13ND
2010-09-13ND
2011-08-03ND
2011-08-03ND
2011-08-03ND
2011-08-03ND
2012-09-11ND
2012-09-11ND
2012-09-11ND
2012-09-11ND
2012-12-04ND
2012-12-04ND
2012-12-04ND
2012-12-04ND
2013-06-24ND
2013-06-24ND
2013-06-24ND
2013-06-24ND
2013-08-27ND
2013-08-271.90 ppb
2013-08-271.10 ppb
2013-08-271.10 ppb
2013-12-17ND
2013-12-17ND
2013-12-17ND
2013-12-17ND
2014-02-27ND
2014-02-27ND
2014-06-17ND
2014-06-17ND
2014-09-17ND
2014-09-17ND
2014-12-11ND
2014-12-11ND
2015-03-10ND
2015-03-10ND
2015-06-111.10 ppb
2015-06-11ND
2015-09-23ND
2015-09-23ND
2015-12-09ND
2015-12-09ND