Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Monochloroacetic acid

Pritchett Water Supply Corporation

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

 

32

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND20ND
2015ND60ND
2016ND80ND
2017ND80ND
2018ND60ND
2019ND20ND

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
2014-06-25Q1423783046ND
2014-06-25Q1423783045ND
2015-06-23Q1523522002ND
2015-06-23Q1523522001ND
2015-09-04Q1534659003ND
2015-09-04Q1534659002ND
2015-11-18Q1545634003ND
2015-11-18Q1545634002ND
2016-02-25Q1608021016ND
2016-02-25Q1608021015ND
2016-05-25Q1620685004ND
2016-05-25Q1620685003ND
2016-08-01Q1631456003ND
2016-08-01Q1631456002ND
2016-10-24Q1645066008ND
2016-10-24Q1645066029ND
2017-03-02Q1709045010ND
2017-03-02Q1709045009ND
2017-04-19Q1716429003ND
2017-04-19Q1716429002ND
2017-07-20Q1729911003ND
2017-07-20Q1729911002ND
2017-11-20Q1759246002ND
2017-11-20Q1759246001ND
2018-02-23Q1807826001ND
2018-02-23Q1807826002ND
2018-05-29Q1821174001ND
2018-05-29Q1821174002ND
2018-09-12Q1836200002ND
2018-09-12Q1836200001ND
2019-09-24Q1968128001ND
2019-09-24Q1968128002ND