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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Valencia Heights Water Company

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

 

48

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND80ND
2015ND80ND
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
2014-01-249588-801-1100ND
2014-01-249588-800-1115ND
2014-04-239588-801-1020ND
2014-04-239588-800-1035ND
2014-07-249588-801-1415ND
2014-07-249588-800-1425ND
2014-10-279588-801-1100ND
2014-10-279588-800-1115ND
2015-01-289588-800-1100ND
2015-01-289588-801-1045ND
2015-04-239588-800-1030ND
2015-04-239588-801-1015ND
2015-07-279588-800-1240ND
2015-07-279588-801-1225ND
2015-10-289588-800-0745ND
2015-10-289588-801-0730ND
2016-01-259588-800-1310ND
2016-01-259588-801-1255ND
2016-04-279588-800-1110ND
2016-04-279588-801-1055ND
2016-07-259588-800-1240ND
2016-07-259588-801-1225ND
2016-10-259588-800-1300ND
2016-10-259588-801-1240ND
2017-01-279588-801-1030ND
2017-01-279588-800-1045ND
2017-04-259588-801-1235ND
2017-04-259588-800-1250ND
2017-07-259588-801-0820ND
2017-07-259588-800-0835ND
2017-10-279588-801-1040ND
2017-10-279588-800-1055ND
2018-01-269588-800-1110ND
2018-01-269588-801-1055ND
2018-04-259588-800-1220ND
2018-04-259588-801-1210ND
2018-07-279588-801-0925ND
2018-07-279588-800-0940ND
2018-10-249588-801-0950ND
2018-10-249588-800-0935ND
2019-01-239588-801-1010ND
2019-01-239588-800-1020ND
2019-04-249588-801-1015ND
2019-04-249588-800-1030ND
2019-07-249588-801-1035ND
2019-07-249588-800-1050ND
2019-10-259588-801-1210ND
2019-10-259588-800-1230ND