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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Jefferson County PWSD 3

Monochloroacetic 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

 

58

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
20140.441 ppb161ND - 7.05 ppb
20152.02 ppb102ND - 11.6 ppb
2016ND80ND
2017ND80ND
2018ND80ND
2019ND80ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 53 ppb

The EWG Health Guideline of 53 ppb for monochloroacetic 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.. This health guideline protects against system toxicity.

ppb = parts per billion

All test results

Date Lab ID Result
2014-02-25AC18256ND
2014-02-25AC18257ND
2014-02-25AC18258ND
2014-02-26AC18259ND
2014-06-02AC28377ND
2014-06-02AC28380ND
2014-06-02AC28378ND
2014-06-02AC28379ND
2014-09-15AC33488ND
2014-09-15AC33489ND
2014-09-15AC33490ND
2014-09-15AC33491ND
2014-12-03AC38312ND
2014-12-03AC38313ND
2014-12-03AC383147.05 ppb
2014-12-03AC38315ND
2015-02-25AC4203911.6 ppb
2015-02-25AC420418.60 ppb
2015-02-25AC42042ND
2015-02-25AC42040ND
2015-06-01AC46594ND
2015-06-01AC46593ND
2015-09-01AC57575ND
2015-09-01AC57576ND
2015-12-09AC62859ND
2015-12-09AC62860ND
2016-03-01AC66405ND
2016-03-01AC66406ND
2016-06-06AC72099ND
2016-06-06AC72100ND
2016-08-29AC81750ND
2016-08-29AC81751ND
2016-11-02AC86999ND
2016-11-02AC86998ND
2017-02-27AC90848ND
2017-02-27AC90849ND
2017-05-31AC95825ND
2017-05-31AC95826ND
2017-08-31AD03579ND
2017-08-31AD03578ND
2017-11-27AD09538ND
2017-11-27AD09539ND
2018-02-21AD14324ND
2018-02-21AD14325ND
2018-06-04AD20553ND
2018-06-04AD20554ND
2018-09-05AD31365ND
2018-09-05AD31366ND
2018-11-20AD35763ND
2018-11-20AD35764ND
2019-02-26AD39432ND
2019-02-26AD39431ND
2019-05-22AD47509ND
2019-05-22AD47510ND
2019-09-03AD54102ND
2019-09-03AD54103ND
2019-11-26AD58145ND
2019-11-26AD58146ND