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EWG's Tap Water Database — 2021 UPDATE

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Dibromoacetic acid

City of Ottawa

Dibromoacetic 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)

83

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.93 ppb16160.880 ppb - 3.20 ppb
20151.97 ppb16160.710 ppb - 4.40 ppb
20160.733 ppb1612ND - 1.60 ppb
20170.704 ppb1612ND - 1.20 ppb
20181.52 ppb16160.530 ppb - 2.30 ppb
20191.28 ppb1611ND - 5.00 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.04 ppb

The EWG Health Guideline of 0.04 ppb for dibromoacetic acid was defined in a peer-reviewed scientific study by EWG and represents a on-in-a-million lifetime cancer risk level. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date Lab ID Result
2014-02-11601822.00 ppb
2014-02-11601782.10 ppb
2014-02-11601742.00 ppb
2014-02-11601722.20 ppb
2014-05-061106352.90 ppb
2014-05-061106342.90 ppb
2014-05-061106333.20 ppb
2014-05-061106323.00 ppb
2014-08-111716170.920 ppb
2014-08-111716160.970 ppb
2014-08-111716181.10 ppb
2014-08-111716190.880 ppb
2014-11-102298191.60 ppb
2014-11-102298171.90 ppb
2014-11-102298141.50 ppb
2014-11-102298111.70 ppb
2015-02-112773751.40 ppb
2015-02-112773741.60 ppb
2015-02-112773731.40 ppb
2015-02-112773721.50 ppb
2015-05-123319621.60 ppb
2015-05-123319631.70 ppb
2015-05-123319651.60 ppb
2015-05-123319641.80 ppb
2015-08-103806790.710 ppb
2015-08-103806781.000 ppb
2015-08-103806770.900 ppb
2015-08-103806761.10 ppb
2015-11-044279204.40 ppb
2015-11-044279192.90 ppb
2015-11-044279184.10 ppb
2015-11-044279173.80 ppb
2016-02-164933940.700 ppb
2016-02-164933930.670 ppb
2016-02-164933950.630 ppb
2016-02-164933960.500 ppb
2016-05-24550888ND
2016-05-24550887ND
2016-05-24550886ND
2016-05-24550885ND
2016-08-236075251.000 ppb
2016-08-236075241.20 ppb
2016-08-236075231.40 ppb
2016-08-236075221.60 ppb
2016-11-146588510.980 ppb
2016-11-146588540.980 ppb
2016-11-146588530.970 ppb
2016-11-146588521.10 ppb
2017-02-137077820.630 ppb
2017-02-137077810.640 ppb
2017-02-137077800.660 ppb
2017-02-137077790.740 ppb
2017-05-17762309ND
2017-05-17762308ND
2017-05-17762307ND
2017-05-17762306ND
2017-08-218223721.000 ppb
2017-08-218223711.20 ppb
2017-08-218223731.000 ppb
2017-08-218223741.000 ppb
2017-11-148776601.20 ppb
2017-11-148776591.20 ppb
2017-11-148776581.000 ppb
2017-11-148776571.000 ppb
2018-02-149074121.50 ppb
2018-02-149074111.60 ppb
2018-02-149074091.40 ppb
2018-02-149074081.50 ppb
2018-05-239742671.90 ppb
2018-05-239742681.90 ppb
2018-05-239742701.90 ppb
2018-05-239742692.00 ppb
2018-08-2210294562.10 ppb
2018-08-2210294551.70 ppb
2018-08-2210294542.30 ppb
2018-08-2210294532.30 ppb
2018-11-2710811700.530 ppb
2018-11-2710811690.530 ppb
2018-11-2710811680.590 ppb
2018-11-2710811670.580 ppb
2019-02-121119812ND
2019-02-121119810ND
2019-02-121119814ND
2019-02-121119816ND
2019-05-201157465ND
2019-05-2011574640.630 ppb
2019-05-2011574630.710 ppb
2019-05-2011574620.690 ppb
2019-08-2812298075.00 ppb
2019-08-2812298060.760 ppb
2019-08-2812298050.720 ppb
2019-08-2812298040.720 ppb
2019-11-2012776092.70 ppb
2019-11-2012776122.70 ppb
2019-11-2012776113.10 ppb
2019-11-2012776102.80 ppb