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EWG's Tap Water Database — 2021 UPDATE

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Monobromoacetic acid

Johnston Municipal Water Supply

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

 

100

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND160ND
20150.710 ppb164ND - 3.95 ppb
2016ND160ND
2017ND160ND
20180.170 ppb162ND - 1.66 ppb
20190.121 ppb206ND - 0.469 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 Lab ID Result
2014-02-112036125ND
2014-02-112036124ND
2014-02-112036127ND
2014-02-112036126ND
2014-05-132052508ND
2014-05-132052511ND
2014-05-132052509ND
2014-05-132052510ND
2014-08-112072256ND
2014-08-112072257ND
2014-08-112072258ND
2014-08-112072259ND
2014-11-172093853ND
2014-11-172093854ND
2014-11-172093855ND
2014-11-172093856ND
2015-02-091B50515-01ND
2015-02-091B50515-04ND
2015-02-091B50515-03ND
2015-02-091B50515-02ND
2015-05-121E50706-01ND
2015-05-121E50706-02ND
2015-05-121E50706-03ND
2015-05-121E50706-04ND
2015-08-101H50713-02ND
2015-08-101H50713-01ND
2015-08-101H50713-04ND
2015-08-101H50713-03ND
2015-11-091K50689-012.78 ppb
2015-11-091K50689-021.94 ppb
2015-11-091K50689-032.69 ppb
2015-11-091K50689-043.95 ppb
2016-02-081B60495-01ND
2016-02-081B60495-02ND
2016-02-081B60495-03ND
2016-02-081B60495-04ND
2016-05-091E60708-03ND
2016-05-091E60708-04ND
2016-05-091E60708-02ND
2016-05-091E60708-01ND
2016-08-091H60712-03ND
2016-08-091H60712-04ND
2016-08-091H60712-01ND
2016-08-091H60712-02ND
2016-11-081K60675-01ND
2016-11-081K60675-02ND
2016-11-081K60675-03ND
2016-11-081K60675-04ND
2017-02-061B70432-03ND
2017-02-061B70432-02ND
2017-02-061B70432-04ND
2017-02-061B70432-01ND
2017-05-091E70770-01ND
2017-05-091E70770-02ND
2017-05-091E70770-03ND
2017-05-091E70770-04ND
2017-08-081H71209-04ND
2017-08-081H71209-03ND
2017-08-081H71209-02ND
2017-08-081H71209-01ND
2017-11-131K71083-01ND
2017-11-131K71083-02ND
2017-11-131K71083-03ND
2017-11-131K71083-04ND
2018-02-061B80339-04ND
2018-02-061B80339-03ND
2018-02-061B80339-02ND
2018-02-061B80339-01ND
2018-05-081E80685-04ND
2018-05-081E80685-01ND
2018-05-081E80685-021.06 ppb
2018-05-081E80685-031.66 ppb
2018-08-141H81206-01ND
2018-08-141H81206-02ND
2018-08-141H81206-03ND
2018-08-141H81206-04ND
2018-11-131K80985-01ND
2018-11-131K80985-02ND
2018-11-131K80985-03ND
2018-11-131K80985-04ND
2019-02-131B90883-01ND
2019-02-131B90883-02ND
2019-02-131B90883-03ND
2019-02-131B90883-04ND
2019-05-151E91750-01ND
2019-05-151E91750-02ND
2019-05-151E91750-03ND
2019-05-151E91750-04ND
2019-07-161G91380-01ND
2019-07-161G91380-04ND
2019-07-161G91380-03ND
2019-07-161G91380-02ND
2019-08-131H90989-02ND
2019-08-131H90989-040.374 ppb
2019-08-131H90989-030.425 ppb
2019-08-131H90989-01ND
2019-11-121K90835-040.469 ppb
2019-11-121K90835-030.456 ppb
2019-11-121K90835-020.373 ppb
2019-11-121K90835-010.318 ppb