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EWG's Tap Water Database — 2021 UPDATE

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Monobromoacetic acid

City of Ottawa

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

 

96

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.694 ppb1614ND - 1.30 ppb
20150.425 ppb164ND - 1.80 ppb
20160.392 ppb1610ND - 0.970 ppb
2017ND160ND
20180.443 ppb167ND - 2.20 ppb
20190.660 ppb169ND - 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 Lab ID Result
2014-02-11601820.530 ppb
2014-02-11601780.560 ppb
2014-02-11601740.530 ppb
2014-02-11601720.680 ppb
2014-05-061106351.20 ppb
2014-05-061106341.20 ppb
2014-05-061106331.30 ppb
2014-05-061106321.20 ppb
2014-08-111716170.670 ppb
2014-08-111716160.690 ppb
2014-08-111716180.720 ppb
2014-08-11171619ND
2014-11-10229819ND
2014-11-102298170.620 ppb
2014-11-102298140.570 ppb
2014-11-102298110.630 ppb
2015-02-11277375ND
2015-02-11277374ND
2015-02-11277373ND
2015-02-11277372ND
2015-05-12331962ND
2015-05-12331963ND
2015-05-12331965ND
2015-05-12331964ND
2015-08-10380679ND
2015-08-10380678ND
2015-08-10380677ND
2015-08-10380676ND
2015-11-044279201.60 ppb
2015-11-044279191.70 ppb
2015-11-044279181.80 ppb
2015-11-044279171.70 ppb
2016-02-164933940.570 ppb
2016-02-164933930.580 ppb
2016-02-164933950.560 ppb
2016-02-164933960.610 ppb
2016-05-24550888ND
2016-05-245508870.670 ppb
2016-05-245508860.650 ppb
2016-05-245508850.620 ppb
2016-08-23607525ND
2016-08-23607524ND
2016-08-23607523ND
2016-08-23607522ND
2016-11-14658851ND
2016-11-146588540.970 ppb
2016-11-146588530.530 ppb
2016-11-146588520.510 ppb
2017-02-13707782ND
2017-02-13707781ND
2017-02-13707780ND
2017-02-13707779ND
2017-05-17762309ND
2017-05-17762308ND
2017-05-17762307ND
2017-05-17762306ND
2017-08-21822372ND
2017-08-21822371ND
2017-08-21822373ND
2017-08-21822374ND
2017-11-14877660ND
2017-11-14877659ND
2017-11-14877658ND
2017-11-14877657ND
2018-02-14907412ND
2018-02-14907411ND
2018-02-14907409ND
2018-02-14907408ND
2018-05-239742670.730 ppb
2018-05-239742680.690 ppb
2018-05-239742700.740 ppb
2018-05-239742690.680 ppb
2018-08-2210294560.950 ppb
2018-08-221029455ND
2018-08-2210294542.20 ppb
2018-08-2210294531.10 ppb
2018-11-271081170ND
2018-11-271081169ND
2018-11-271081168ND
2018-11-271081167ND
2019-02-121119812ND
2019-02-121119810ND
2019-02-121119814ND
2019-02-121119816ND
2019-05-201157465ND
2019-05-2011574641.30 ppb
2019-05-2011574631.30 ppb
2019-05-2011574621.10 ppb
2019-08-281229807ND
2019-08-2812298061.50 ppb
2019-08-2812298051.20 ppb
2019-08-281229804ND
2019-11-2012776090.990 ppb
2019-11-2012776120.970 ppb
2019-11-2012776111.000 ppb
2019-11-2012776101.20 ppb