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EWG's Tap Water Database — 2021 UPDATE

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Monobromoacetic acid

Castle Rock Municipal Water

Monobromoacetic 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

 

36

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND60ND
2015ND80ND
2016ND80ND
2017ND80ND
2018ND40ND
2019ND20ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 25 ppb

The EWG Health Guideline of 25 ppb for monobromoacetic 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 muscular degeneration.

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-2206312ND
2014-04-1436722ND
2014-07-2375652ND
2014-07-2375651ND
2014-10-2117192ND
2014-10-2318921ND
2015-02-0310433ND
2015-02-0310432ND
2015-03-1626582ND
2015-03-1626581ND
2015-07-2078372ND
2015-07-2078373ND
2015-10-1917902ND
2015-10-1917901ND
2016-02-29ND
2016-03-01ND
2016-04-18ND
2016-04-18ND
2016-07-18ND
2016-07-18ND
2016-10-20ND
2016-10-20ND
2017-01-19ND
2017-01-19ND
2017-04-20ND
2017-04-20ND
2017-07-18ND
2017-07-18ND
2017-10-30ND
2017-10-30ND
2018-03-12ND
2018-03-12ND
2018-07-16ND
2018-07-16ND
2019-07-17ND
2019-07-17ND