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EWG's Tap Water Database — 2021 UPDATE

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Haloacetic acids (HAA5)

Beauregard Water Works District #3

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

 

276

Samples

0

Samples exceeding legal limit (MCL)

142

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND360ND
2015ND480ND
2016ND480ND
20175.19 ppb4846ND - 12.5 ppb
20185.61 ppb48482.27 ppb - 13.6 ppb
20196.81 ppb48481.000 ppb - 12.8 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
2014-03-251287963ND
2014-03-251287965ND
2014-03-251287966ND
2014-03-251287967ND
2014-03-251287968ND
2014-03-251287969ND
2014-03-251287963ND
2014-03-251287965ND
2014-03-251287966ND
2014-03-251287967ND
2014-03-251287968ND
2014-03-251287969ND
2014-06-251312926ND
2014-06-251312927ND
2014-06-251312928ND
2014-06-251312929ND
2014-06-251312930ND
2014-06-251312931ND
2014-06-251312926ND
2014-06-251312927ND
2014-06-251312928ND
2014-06-251312929ND
2014-06-251312930ND
2014-06-251312931ND
2014-12-031355129ND
2014-12-031355130ND
2014-12-031355131ND
2014-12-031355132ND
2014-12-031355133ND
2014-12-031355134ND
2014-12-031355129ND
2014-12-031355130ND
2014-12-031355131ND
2014-12-031355132ND
2014-12-031355133ND
2014-12-031355134ND
2015-03-241381708ND
2015-03-241381712ND
2015-03-241381713ND
2015-03-241381714ND
2015-03-241381715ND
2015-03-241381716ND
2015-03-241381708ND
2015-03-241381712ND
2015-03-241381713ND
2015-03-241381714ND
2015-03-241381715ND
2015-03-241381716ND
2015-06-231405172ND
2015-06-231405174ND
2015-06-231405175ND
2015-06-231405176ND
2015-06-231405177ND
2015-06-231405178ND
2015-06-231405172ND
2015-06-231405174ND
2015-06-231405175ND
2015-06-231405176ND
2015-06-231405177ND
2015-06-231405178ND
2015-09-241430267ND
2015-09-241430270ND
2015-09-241430271ND
2015-09-241430272ND
2015-09-241430273ND
2015-09-241430274ND
2015-09-241430267ND
2015-09-241430270ND
2015-09-241430271ND
2015-09-241430272ND
2015-09-241430273ND
2015-09-241430274ND
2015-12-091450373ND
2015-12-091450374ND
2015-12-091450375ND
2015-12-091450376ND
2015-12-091450377ND
2015-12-091450378ND
2015-12-091450373ND
2015-12-091450374ND
2015-12-091450375ND
2015-12-091450376ND
2015-12-091450377ND
2015-12-091450378ND
2016-03-221476807ND
2016-03-221476808ND
2016-03-221476809ND
2016-03-221476810ND
2016-03-221476811ND
2016-03-221476812ND
2016-03-221476807ND
2016-03-221476808ND
2016-03-221476809ND
2016-03-221476810ND
2016-03-221476811ND
2016-03-221476812ND
2016-06-271502670ND
2016-06-271502671ND
2016-06-271502672ND
2016-06-271502673ND
2016-06-271502674ND
2016-06-271502675ND
2016-06-271502670ND
2016-06-271502671ND
2016-06-271502672ND
2016-06-271502673ND
2016-06-271502674ND
2016-06-271502675ND
2016-09-271528120ND
2016-09-271528121ND
2016-09-271528122ND
2016-09-271528123ND
2016-09-271528124ND
2016-09-271528125ND
2016-09-271528120ND
2016-09-271528121ND
2016-09-271528122ND
2016-09-271528123ND
2016-09-271528124ND
2016-09-271528125ND
2016-12-191549784ND
2016-12-191549785ND
2016-12-191549786ND
2016-12-191549787ND
2016-12-191549788ND
2016-12-191549789ND
2016-12-191549784ND
2016-12-191549785ND
2016-12-191549786ND
2016-12-191549787ND
2016-12-191549788ND
2016-12-191549789ND
2017-03-02352987380012.00 ppb
2017-03-02352987380025.70 ppb
2017-03-02352987380035.20 ppb
2017-03-02352987380043.00 ppb
2017-03-02352987380052.70 ppb
2017-03-02352987380061.46 ppb
2017-03-02352987380012.00 ppb
2017-03-02352987380025.70 ppb
2017-03-02352987380035.20 ppb
2017-03-02352987380043.00 ppb
2017-03-02352987380052.70 ppb
2017-03-02352987380061.46 ppb
2017-06-0135315802009ND
2017-06-01353158020101.29 ppb
2017-06-01353158020115.90 ppb
2017-06-01353158020125.10 ppb
2017-06-01353158020134.70 ppb
2017-06-013531580201412.5 ppb
2017-06-0135315802009ND
2017-06-01353158020101.29 ppb
2017-06-01353158020115.90 ppb
2017-06-01353158020125.10 ppb
2017-06-01353158020134.70 ppb
2017-06-013531580201412.5 ppb
2017-09-07353350940015.90 ppb
2017-09-07353350940029.10 ppb
2017-09-07353350940033.50 ppb
2017-09-07353350940047.10 ppb
2017-09-07353350940057.60 ppb
2017-09-073533509400611.5 ppb
2017-09-07353350940015.90 ppb
2017-09-07353350940029.10 ppb
2017-09-07353350940033.50 ppb
2017-09-07353350940047.10 ppb
2017-09-07353350940057.60 ppb
2017-09-073533509400611.5 ppb
2017-12-06353623660012.46 ppb
2017-12-06353623660027.30 ppb
2017-12-06353623660034.50 ppb
2017-12-06353623660045.40 ppb
2017-12-06353623660055.50 ppb
2017-12-06353623660065.20 ppb
2017-12-06353623660012.46 ppb
2017-12-06353623660027.30 ppb
2017-12-06353623660034.50 ppb
2017-12-06353623660045.40 ppb
2017-12-06353623660055.50 ppb
2017-12-06353623660065.20 ppb
2018-03-07353791770012.90 ppb
2018-03-07353791770027.40 ppb
2018-03-07353791770032.68 ppb
2018-03-07353791770045.60 ppb
2018-03-07353791770056.10 ppb
2018-03-07353791770063.70 ppb
2018-03-07353791770012.90 ppb
2018-03-07353791770027.40 ppb
2018-03-07353791770032.68 ppb
2018-03-07353791770045.60 ppb
2018-03-07353791770056.10 ppb
2018-03-07353791770063.70 ppb
2018-06-13353987410013.20 ppb
2018-06-13353987410027.20 ppb
2018-06-13353987410033.00 ppb
2018-06-13353987410045.90 ppb
2018-06-13353987410052.80 ppb
2018-06-13353987410066.80 ppb
2018-06-13353987410013.20 ppb
2018-06-13353987410027.20 ppb
2018-06-13353987410033.00 ppb
2018-06-13353987410045.90 ppb
2018-06-13353987410052.80 ppb
2018-06-13353987410066.80 ppb
2018-09-04354162210013.30 ppb
2018-09-04354162210023.40 ppb
2018-09-043541622100313.6 ppb
2018-09-04354162260018.00 ppb
2018-09-04354162260027.70 ppb
2018-09-04354162260038.60 ppb
2018-09-04354162210013.30 ppb
2018-09-04354162210023.40 ppb
2018-09-043541622100313.6 ppb
2018-09-04354162260018.00 ppb
2018-09-04354162260027.70 ppb
2018-09-04354162260038.60 ppb
2018-12-12354373740019.00 ppb
2018-12-12354373740026.60 ppb
2018-12-12354373740032.82 ppb
2018-12-12354373740045.00 ppb
2018-12-12354373740057.00 ppb
2018-12-12354373740062.27 ppb
2018-12-12354373740019.00 ppb
2018-12-12354373740026.60 ppb
2018-12-12354373740032.82 ppb
2018-12-12354373740045.00 ppb
2018-12-12354373740057.00 ppb
2018-12-12354373740062.27 ppb
2019-03-11354547150019.00 ppb
2019-03-11354547150027.50 ppb
2019-03-113545471600112.0 ppb
2019-03-11354547160023.10 ppb
2019-03-11354547160033.10 ppb
2019-03-11354547150019.00 ppb
2019-03-11354547150027.50 ppb
2019-03-113545471600112.0 ppb
2019-03-11354547160023.10 ppb
2019-03-11354547160033.10 ppb
2019-03-14354547150039.00 ppb
2019-03-14354547150039.00 ppb
2019-06-03354742820018.00 ppb
2019-06-03354742820024.90 ppb
2019-06-03354742820034.00 ppb
2019-06-03354742840019.20 ppb
2019-06-03354742840028.80 ppb
2019-06-03354742840036.60 ppb
2019-06-03354742820018.00 ppb
2019-06-03354742820024.90 ppb
2019-06-03354742820034.00 ppb
2019-06-03354742840019.20 ppb
2019-06-03354742840028.80 ppb
2019-06-03354742840036.60 ppb
2019-09-03354958240018.00 ppb
2019-09-03354958310017.30 ppb
2019-09-03354958310023.80 ppb
2019-09-03354958310031.000 ppb
2019-09-03354958240018.00 ppb
2019-09-03354958310017.30 ppb
2019-09-03354958310023.80 ppb
2019-09-03354958310031.000 ppb
2019-09-263550113100112.8 ppb
2019-09-263550113100212.5 ppb
2019-09-263550113100112.8 ppb
2019-09-263550113100212.5 ppb
2019-12-02355169810019.20 ppb
2019-12-02355169810025.00 ppb
2019-12-02355169810037.30 ppb
2019-12-02355169860017.00 ppb
2019-12-02355169860022.21 ppb
2019-12-02355169860032.23 ppb
2019-12-02355169810019.20 ppb
2019-12-02355169810025.00 ppb
2019-12-02355169810037.30 ppb
2019-12-02355169860017.00 ppb
2019-12-02355169860022.21 ppb
2019-12-02355169860032.23 ppb