Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Monochloroacetic acid

Jefferson, Town of

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

 

26

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND60ND
2015ND40ND
2016ND40ND
2017ND50ND
2018ND40ND
2019ND30ND

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
2014-02-1892189979005ND
2014-02-1892189979005DISND
2014-05-0692200074003DISND
2014-06-1992206094002DISND
2014-08-0592212113002TTHND
2014-11-0492224052003TTHND
2015-02-03ND
2015-05-05ND
2015-08-04ND
2015-11-03ND
2016-02-0292285044002TTHND
2016-05-0392296161002TTHND
2016-08-0292307356004TTHND
2016-11-0192318123001TTHND
2017-02-23339-17ND
2017-05-24803-17ND
2017-08-291396-17ND
2017-10-251843-17ND
2017-11-282075-17ND
2018-02-22391-18 ND
2018-05-22863-18 ND
2018-08-231592-18 ND
2018-11-282375-18 ND
2019-02-143038-19 ND
2019-05-163776-19 ND
2019-08-144630-19A ND