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EWG's Tap Water Database — 2021 UPDATE

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Monobromoacetic acid

Castle Rock

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

 

112

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015N/A00N/A
2016ND240ND
2017ND240ND
20180.331 ppb326ND - 2.20 ppb
20190.119 ppb323ND - 1.50 ppb

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 Result
2016-05-03ND
2016-05-03ND
2016-05-03ND
2016-05-03ND
2016-05-03ND
2016-05-03ND
2016-05-03ND
2016-05-03ND
2016-08-15ND
2016-08-15ND
2016-08-15ND
2016-08-15ND
2016-08-15ND
2016-08-15ND
2016-08-15ND
2016-08-15ND
2016-11-14ND
2016-11-14ND
2016-11-14ND
2016-11-14ND
2016-11-14ND
2016-11-14ND
2016-11-14ND
2016-11-14ND
2017-05-15ND
2017-05-15ND
2017-05-15ND
2017-05-15ND
2017-05-15ND
2017-05-15ND
2017-05-15ND
2017-05-16ND
2017-08-15ND
2017-08-15ND
2017-08-15ND
2017-08-15ND
2017-08-15ND
2017-08-15ND
2017-08-15ND
2017-08-23ND
2017-11-13ND
2017-11-13ND
2017-11-13ND
2017-11-13ND
2017-11-13ND
2017-11-13ND
2017-11-13ND
2017-11-13ND
2018-02-21ND
2018-02-21ND
2018-02-21ND
2018-02-21ND
2018-02-21ND
2018-02-21ND
2018-02-21ND
2018-02-21ND
2018-05-14ND
2018-05-14ND
2018-05-14ND
2018-05-141.70 ppb
2018-05-142.20 ppb
2018-05-142.10 ppb
2018-05-141.70 ppb
2018-05-141.50 ppb
2018-08-07ND
2018-08-07ND
2018-08-07ND
2018-08-07ND
2018-08-07ND
2018-08-07ND
2018-08-07ND
2018-08-07ND
2018-11-271.40 ppb
2018-11-27ND
2018-11-27ND
2018-11-27ND
2018-11-27ND
2018-11-27ND
2018-11-27ND
2018-11-27ND
2019-02-19ND
2019-02-19ND
2019-02-191.10 ppb
2019-02-19ND
2019-02-19ND
2019-02-19ND
2019-02-19ND
2019-02-191.20 ppb
2019-05-07ND
2019-05-07ND
2019-05-07ND
2019-05-07ND
2019-05-08ND
2019-05-08ND
2019-05-08ND
2019-05-08ND
2019-08-071.50 ppb
2019-08-07ND
2019-08-07ND
2019-08-07ND
2019-08-07ND
2019-08-07ND
2019-08-07ND
2019-08-07ND
2019-11-12ND
2019-11-12ND
2019-11-12ND
2019-11-12ND
2019-11-12ND
2019-11-12ND
2019-11-12ND
2019-11-12ND