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EWG's Tap Water Database — 2021 UPDATE

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Haloacetic acids (HAA5)

Brunswick County Water System

Haloacetic acids are formed when disinfectants such as chlorine are added to tap water. The group of five haloacetic acids regulated by federal standards includes monochloroacetic acid, dichloroacetic acid, trichloroacetic acid, monobromoacetic acid and dibromoacetic acid. Read More.

Haloacetic acids are harmful during pregnancy and may increase the risk of cancer. Haloacetic acids are� genotoxic, which means that they induce mutations and DNA damage. Multiple studies by the National Toxicology Program have demonstrated the cancer-causing properties of individual haloacetic acids in laboratory animals. The Department of Health and Human Services is currently considering listing di- or tri-haloacetic acids for possible inclusion in its comprehensive Report on Carcinogens.

Click here to read more about disinfection byproducts.

MORE ABOUT THIS CONTAMINANT

 

192

Samples

0

Samples exceeding legal limit (MCL)

192

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201425.8 ppb323216.0 ppb - 35.0 ppb
201522.8 ppb323216.0 ppb - 29.0 ppb
201617.9 ppb323212.0 ppb - 23.0 ppb
201716.8 ppb323212.0 ppb - 24.0 ppb
201821.0 ppb323212.0 ppb - 34.0 ppb
201920.5 ppb323210.00 ppb - 32.0 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.1 ppb

The EWG Health Guideline of 0.1 ppb for the group of five haloacetic acids, or HAA5, was defined in a peer-reviewed scientific study by EWG and represents a one-in-a-million lifetime cancer risk level. This health guideline protects against cancer.

EPA Maximum Contaminant
Level (MCL) 60 ppb

The legal limit for the group of five haloacetic acids (HAA5), established in 1998, was based on the need for residual disinfectant levels in water served to customers and the cost of treatment. This limit does not fully protect against the risk of cancer and harm to the developing fetus due to exposure to haloacetic acids.

ppb = parts per billion

All test results

Date Lab ID Result
2014-03-0737729_14-0659623.0 ppb
2014-03-0737729_14-0659725.0 ppb
2014-03-0737729_14-0659925.0 ppb
2014-03-0737729_14-0660016.0 ppb
2014-03-0737729_14-0660118.0 ppb
2014-03-0737729_14-0660226.0 ppb
2014-03-0737729_14-0660322.0 ppb
2014-03-0737729_14-0660423.0 ppb
2014-06-0637729_14-1618425.0 ppb
2014-06-0637729_14-1618529.0 ppb
2014-06-0637729_14-1618622.0 ppb
2014-06-0637729_14-1618727.0 ppb
2014-06-0637729_14-1618826.0 ppb
2014-06-0637729_14-1618925.0 ppb
2014-06-0637729_14-1619025.0 ppb
2014-06-0637729_14-1619126.0 ppb
2014-09-0537729_14-2696223.0 ppb
2014-09-0537729_14-2696323.0 ppb
2014-09-0537729_14-2696426.0 ppb
2014-09-0537729_14-2696531.0 ppb
2014-09-0537729_14-2696632.0 ppb
2014-09-0537729_14-2696724.0 ppb
2014-09-0537729_14-2696825.0 ppb
2014-09-0537729_14-2696926.0 ppb
2014-12-0537729_14-3700730.0 ppb
2014-12-0537729_14-3700935.0 ppb
2014-12-0537729_14-3701028.0 ppb
2014-12-0537729_14-3701126.0 ppb
2014-12-0537729_14-3701231.0 ppb
2014-12-0537729_14-3701329.0 ppb
2014-12-0537729_14-3701430.0 ppb
2014-12-0537729_14-3701825.0 ppb
2015-03-0620.0 ppb
2015-03-0616.0 ppb
2015-03-0618.0 ppb
2015-03-0620.0 ppb
2015-03-0617.0 ppb
2015-03-0620.0 ppb
2015-03-0620.0 ppb
2015-03-0617.0 ppb
2015-06-0425.0 ppb
2015-06-0416.0 ppb
2015-06-0424.0 ppb
2015-06-0424.0 ppb
2015-06-0425.0 ppb
2015-06-0423.0 ppb
2015-06-0429.0 ppb
2015-06-0417.0 ppb
2015-09-2823.0 ppb
2015-09-2820.0 ppb
2015-09-2824.0 ppb
2015-09-2826.0 ppb
2015-09-2829.0 ppb
2015-09-2824.0 ppb
2015-09-2822.0 ppb
2015-09-2824.0 ppb
2015-12-0418.0 ppb
2015-12-0421.0 ppb
2015-12-0426.0 ppb
2015-12-0429.0 ppb
2015-12-0429.0 ppb
2015-12-0428.0 ppb
2015-12-0429.0 ppb
2015-12-0428.0 ppb
2016-03-1137729_16-0797917.0 ppb
2016-03-1137729_16-0799315.0 ppb
2016-03-1137729_16-0799414.0 ppb
2016-03-1137729_16-0799520.0 ppb
2016-03-1137729_16-0799620.0 ppb
2016-03-1137729_16-0799716.0 ppb
2016-03-1137729_16-0799815.0 ppb
2016-03-1137729_16-0799919.0 ppb
2016-06-1037729_16-1864818.0 ppb
2016-06-1037729_16-1864919.0 ppb
2016-06-1037729_16-1865021.0 ppb
2016-06-1037729_16-1865120.0 ppb
2016-06-1037729_16-1865218.0 ppb
2016-06-1037729_16-1865320.0 ppb
2016-06-1037729_16-1865418.0 ppb
2016-06-1037729_16-1865818.0 ppb
2016-09-0237729_16-3065923.0 ppb
2016-09-0237729_16-3066014.0 ppb
2016-09-0237729_16-3066118.0 ppb
2016-09-0237729_16-3066220.0 ppb
2016-09-0237729_16-3066321.0 ppb
2016-09-0237729_16-3066419.0 ppb
2016-09-0237729_16-3066519.0 ppb
2016-09-0237729_16-3066621.0 ppb
2016-12-2237729_16-4457615.0 ppb
2016-12-2237729_16-4457820.0 ppb
2016-12-2237729_16-4457915.0 ppb
2016-12-2237729_16-4458019.0 ppb
2016-12-2237729_16-4458118.0 ppb
2016-12-2237729_16-4458217.0 ppb
2016-12-2237729_16-4458315.0 ppb
2016-12-2237729_16-4458412.0 ppb
2017-03-1037729_17-0822016.0 ppb
2017-03-1037729_17-0822114.0 ppb
2017-03-1037729_17-0822214.0 ppb
2017-03-1037729_17-0822315.0 ppb
2017-03-1037729_17-0822415.0 ppb
2017-03-1037729_17-0822513.0 ppb
2017-03-1037729_17-0822613.0 ppb
2017-03-1037729_17-0822716.0 ppb
2017-06-0737729_17-1909520.0 ppb
2017-06-0737729_17-1909621.0 ppb
2017-06-0737729_17-1909718.0 ppb
2017-06-0737729_17-1909824.0 ppb
2017-06-0737729_17-1909920.0 ppb
2017-06-0737729_17-1910019.0 ppb
2017-06-0737729_17-1910118.0 ppb
2017-06-0737729_17-1910220.0 ppb
2017-09-1837729_17-3463018.0 ppb
2017-09-1837729_17-3463118.0 ppb
2017-09-1837729_17-3462420.0 ppb
2017-09-1837729_17-3462519.0 ppb
2017-09-1837729_17-3462620.0 ppb
2017-09-1837729_17-3462718.0 ppb
2017-09-1837729_17-3462822.0 ppb
2017-09-1837729_17-3462918.0 ppb
2017-12-0437729_17-4559414.0 ppb
2017-12-0437729_17-4562213.0 ppb
2017-12-0437729_17-4562313.0 ppb
2017-12-0437729_17-4562413.0 ppb
2017-12-0437729_17-4562512.0 ppb
2017-12-0437729_17-4562614.0 ppb
2017-12-0437729_17-4562718.0 ppb
2017-12-0437729_17-4562913.0 ppb
2018-03-0837729_18-08917 18.0 ppb
2018-03-0837729_18-08918 16.0 ppb
2018-03-0837729_18-08919 17.0 ppb
2018-03-0837729_18-08920 17.0 ppb
2018-03-0837729_18-08921 16.0 ppb
2018-03-0837729_18-08922 15.0 ppb
2018-03-0837729_18-08923 17.0 ppb
2018-03-0837729_18-08924 17.0 ppb
2018-06-2137729_18-25058 32.0 ppb
2018-06-2137729_18-25063 34.0 ppb
2018-06-2137729_18-25064 30.0 ppb
2018-06-2137729_18-25065 27.0 ppb
2018-06-2137729_18-25066 24.0 ppb
2018-06-2137729_18-25067 28.0 ppb
2018-06-2137729_18-25068 28.0 ppb
2018-06-2137729_18-25069 25.0 ppb
2018-09-1037729_18-38014 20.0 ppb
2018-09-1037729_18-38015 19.0 ppb
2018-09-1037729_18-38016 24.0 ppb
2018-09-1037729_18-38017 23.0 ppb
2018-09-1037729_18-38018 22.0 ppb
2018-09-1037729_18-38019 21.0 ppb
2018-09-1037729_18-38020 19.0 ppb
2018-09-1037729_18-38021 14.0 ppb
2018-12-0337729_18-50400 18.0 ppb
2018-12-0337729_18-50401 18.0 ppb
2018-12-0337729_18-50402 20.0 ppb
2018-12-0337729_18-50403 21.0 ppb
2018-12-0337729_18-50404 21.0 ppb
2018-12-0337729_18-50405 12.0 ppb
2018-12-0337729_18-50407 18.0 ppb
2018-12-0337729_18-50411 20.0 ppb
2019-03-0837729_19-09882 17.0 ppb
2019-03-0837729_19-09883 21.0 ppb
2019-03-0837729_19-09884 15.0 ppb
2019-03-0837729_19-09885 23.0 ppb
2019-03-0837729_19-09886 17.0 ppb
2019-03-0837729_19-09887 18.0 ppb
2019-03-0837729_19-09889 21.0 ppb
2019-03-0837729_19-A 15.0 ppb
2019-06-0637729_19-23182 21.0 ppb
2019-06-0637729_19-23183 14.0 ppb
2019-06-0637729_19-23184 22.0 ppb
2019-06-0637729_19-23185 23.0 ppb
2019-06-0637729_19-23186 19.0 ppb
2019-06-0637729_19-23187 22.0 ppb
2019-06-0637729_19-23188 16.0 ppb
2019-06-0637729_19-23189 21.0 ppb
2019-09-2537729_19-41660 22.0 ppb
2019-09-2537729_19-41661 17.0 ppb
2019-09-2537729_19-41662 24.0 ppb
2019-09-2537729_19-41663 32.0 ppb
2019-09-2537729_19-41664 27.0 ppb
2019-09-2537729_19-41665 28.0 ppb
2019-09-2537729_19-41666 25.0 ppb
2019-09-2537729_19-41667 27.0 ppb
2019-12-1637729_19-53468 20.0 ppb
2019-12-1637729_19-53469 18.0 ppb
2019-12-1637729_19-53470 20.0 ppb
2019-12-1637729_19-53471 10.00 ppb
2019-12-1637729_19-53472 22.0 ppb
2019-12-1637729_19-53473 20.0 ppb
2019-12-1637729_19-53474 19.0 ppb
2019-12-1637729_19-53475 19.0 ppb