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EWG's Tap Water Database — 2021 UPDATE

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Monobromoacetic acid

Northwest Regional Water District

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

 

92

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND160ND
2015ND160ND
20160.438 ppb162ND - 3.90 ppb
2017ND160ND
2018ND160ND
2019ND120ND

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
2014-02-05A140176569ND
2014-02-05A140176568ND
2014-02-05A140176567ND
2014-02-05A140176566ND
2014-05-01A140190842ND
2014-05-01A140190841ND
2014-05-01A140190840ND
2014-05-01A140190839ND
2014-08-06A140191245ND
2014-08-06A140191244ND
2014-08-06A140191246ND
2014-08-06A140191247ND
2014-11-05A140216687ND
2014-11-05A140216688ND
2014-11-05A140216689ND
2014-11-05A140216690ND
2015-02-04A150217644ND
2015-02-04A150217641ND
2015-02-04A150217642ND
2015-02-04A150217643ND
2015-05-06A150232000ND
2015-05-06A150231999ND
2015-05-06A150231998ND
2015-05-06A150231997ND
2015-08-05A150285589ND
2015-08-05A150285588ND
2015-08-05A150285587ND
2015-08-05A150285586ND
2015-11-04A150319948ND
2015-11-04A150319949ND
2015-11-04A150319950ND
2015-11-04A150319951ND
2016-02-03A1603318213.90 ppb
2016-02-03A1603318243.10 ppb
2016-02-03A160331823ND
2016-02-03A160331822ND
2016-05-04A160338511ND
2016-05-04A160338512ND
2016-05-04A160338509ND
2016-05-04A160338510ND
2016-08-03A160399125ND
2016-08-03A160399126ND
2016-08-03A160399127ND
2016-08-03A160399128ND
2016-11-02A160435251ND
2016-11-02A160427500ND
2016-11-02A160427498ND
2016-11-02A160427499ND
2017-02-01A170453444ND
2017-02-01A170453445ND
2017-02-01A170453446ND
2017-02-01A170453447ND
2017-05-03A170477028ND
2017-05-03A170477029ND
2017-05-03A170477030ND
2017-05-03A170477031ND
2017-08-02A170498116ND
2017-08-02A170498118ND
2017-08-02A170498117ND
2017-08-02A170498115ND
2017-11-01A170532869ND
2017-11-01A170532870ND
2017-11-01A170532871ND
2017-11-01A170532872ND
2018-02-01A180548241ND
2018-02-01A180548243ND
2018-02-01A180548242ND
2018-02-01A180548240ND
2018-05-02A180570929ND
2018-05-02A180570930ND
2018-05-02A180570931ND
2018-05-02A180570932ND
2018-08-01A180600506ND
2018-08-01A180600507ND
2018-08-01A180600508ND
2018-08-01A180600509ND
2018-11-018K00091-03ND
2018-11-018K00091-02ND
2018-11-018K00091-01ND
2018-11-018K00091-04ND
2019-02-069B00762-01ND
2019-02-069B00762-04ND
2019-02-069B00762-03ND
2019-02-069B00762-02ND
2019-05-019E00227-01ND
2019-05-019E00227-02ND
2019-05-019E00227-03ND
2019-05-019E00227-04ND
2019-08-019H00013-01ND
2019-08-019H00013-02ND
2019-08-019H00013-03ND
2019-08-019H00013-04ND