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EWG's Tap Water Database — 2021 UPDATE

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Dibromoacetic acid

Helena Water System

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)

34

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.319 ppb1612ND - 0.700 ppb
20150.189 ppb164ND - 0.890 ppb
20160.141 ppb163ND - 0.830 ppb
20170.231 ppb168ND - 0.540 ppb
20180.0388 ppb162ND - 0.330 ppb
20190.216 ppb165ND - 0.880 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
2014-02-18H14020182-004BND
2014-02-18H14020182-003BND
2014-02-18H14020182-002BND
2014-02-18H14020182-001BND
2014-05-06H14050080-004A0.270 ppb
2014-05-06H14050080-003A0.400 ppb
2014-05-06H14050080-002A0.300 ppb
2014-05-06H14050080-001A0.270 ppb
2014-08-07H14080149-002B0.530 ppb
2014-08-07H14080149-001B0.700 ppb
2014-08-07H14080149-003B0.570 ppb
2014-08-07H14080149-004B0.460 ppb
2014-11-11H14110156-004B0.430 ppb
2014-11-11H14110156-003B0.310 ppb
2014-11-11H14110156-002B0.470 ppb
2014-11-11H14110156-001B0.390 ppb
2015-02-09H15020132-004BND
2015-02-09H15020132-003BND
2015-02-09H15020132-002BND
2015-02-09H15020132-001BND
2015-05-04H15050032-001BND
2015-05-04H15050032-002BND
2015-05-04H15050032-004BND
2015-05-04H15050032-003BND
2015-08-04H15080039-004B0.660 ppb
2015-08-04H15080039-003B0.600 ppb
2015-08-04H15080039-002B0.870 ppb
2015-08-04H15080039-001B0.890 ppb
2015-11-11H15110206-004BND
2015-11-11H15110206-003BND
2015-11-11H15110206-002BND
2015-11-11H15110206-001BND
2016-02-08H16020112-002BND
2016-02-08H16020112-001BND
2016-02-08H16020112-003BND
2016-02-08H16020112-004BND
2016-05-04H16050062-004BND
2016-05-04H16050062-003BND
2016-05-04H16050062-002BND
2016-05-04H16050062-001BND
2016-08-11H16080311-004BND
2016-08-11H16080311-003B0.690 ppb
2016-08-11H16080311-002B0.740 ppb
2016-08-11H16080311-001B0.830 ppb
2016-11-07H16110141-001BND
2016-11-07H16110141-004BND
2016-11-07H16110141-003BND
2016-11-07H16110141-002BND
2017-02-06H17020059-004BND
2017-02-06H17020059-003BND
2017-02-06H17020059-002BND
2017-02-06H17020059-001BND
2017-05-10H17050211-004BND
2017-05-10H17050211-003BND
2017-05-10H17050211-002B0.430 ppb
2017-05-10H17050211-001BND
2017-08-16H17080330-002B0.430 ppb
2017-08-16H17080330-001B0.540 ppb
2017-08-16H17080330-003B0.480 ppb
2017-08-16H17080330-004BND
2017-11-28H17110486-004B0.420 ppb
2017-11-28H17110486-003B0.460 ppb
2017-11-28H17110486-002B0.420 ppb
2017-11-28H17110486-001B0.510 ppb
2018-02-15H18020260-004BND
2018-02-15H18020260-003BND
2018-02-15H18020260-002BND
2018-02-15H18020260-001BND
2018-05-09H18050233-001BND
2018-05-09H18050233-002BND
2018-05-09H18050233-004BND
2018-05-09H18050233-003BND
2018-08-14H18080291-004BND
2018-08-14H18080291-003BND
2018-08-14H18080291-002B0.290 ppb
2018-08-14H18080291-001B0.330 ppb
2018-11-14H18110336-004BND
2018-11-14H18110336-003BND
2018-11-14H18110336-002BND
2018-11-14H18110336-001BND
2019-02-06H19020065-002BND
2019-02-06H19020065-001BND
2019-02-06H19020065-003BND
2019-02-06H19020065-004BND
2019-05-23H19050678-004BND
2019-05-23H19050678-003BND
2019-05-23H19050678-002B0.380 ppb
2019-05-23H19050678-001BND
2019-08-20H19080561-004B0.550 ppb
2019-08-20H19080561-003B0.880 ppb
2019-08-20H19080561-002B0.840 ppb
2019-08-20H19080561-001B0.810 ppb
2019-11-13H19110258-001BND
2019-11-13H19110258-004BND
2019-11-13H19110258-003BND
2019-11-13H19110258-002BND