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EWG's Tap Water Database — 2021 UPDATE

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Haloacetic acids (HAA5)

Middletown Water Department

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

 

104

Samples

0

Samples exceeding legal limit (MCL)

104

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201430.1 ppb242417.8 ppb - 51.1 ppb
201527.0 ppb161622.2 ppb - 36.1 ppb
201629.1 ppb161616.4 ppb - 40.5 ppb
201723.7 ppb161612.9 ppb - 39.2 ppb
201825.1 ppb161616.3 ppb - 30.9 ppb
201921.8 ppb161612.3 ppb - 34.4 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
2014-01-07DBP 20038899624.6 ppb
2014-01-07DBP 20038899722.0 ppb
2014-01-07DBP 20038899822.6 ppb
2014-01-07DBP 20038899928.0 ppb
2014-03-13DBP 20039266531.2 ppb
2014-03-13DBP 20039266627.7 ppb
2014-03-13DBP 20039266726.9 ppb
2014-03-13DBP 20039266829.2 ppb
2014-04-04DBP 20039370234.5 ppb
2014-04-04DBP 20039370330.3 ppb
2014-04-04DBP 20039370435.5 ppb
2014-04-04DBP 20039370532.6 ppb
2014-07-03DBP 20039899546.4 ppb
2014-07-03DBP 20039899623.6 ppb
2014-07-03DBP 20039899842.6 ppb
2014-07-03DBP 20039899951.1 ppb
2014-10-02DBP 20040538732.6 ppb
2014-10-02DBP 20040538827.3 ppb
2014-10-02DBP 20040538925.0 ppb
2014-10-02DBP 20040539039.3 ppb
2014-12-11DBP 20040945423.5 ppb
2014-12-11DBP 20040945519.3 ppb
2014-12-11DBP 20040945617.8 ppb
2014-12-11DBP 20040945728.9 ppb
2015-01-08DBP 20041040530.8 ppb
2015-01-08DBP 20041040224.7 ppb
2015-01-08DBP 20041040322.3 ppb
2015-01-08DBP 20041040425.1 ppb
2015-04-02DBP 20041437429.9 ppb
2015-04-02DBP 20041437528.1 ppb
2015-04-02DBP 20041437326.2 ppb
2015-04-02DBP 20041437227.8 ppb
2015-07-07DBP 20041966027.0 ppb
2015-07-07DBP 20041965930.6 ppb
2015-07-07DBP 20041966129.0 ppb
2015-07-07DBP 20041966236.1 ppb
2015-10-01DBP 20042594122.2 ppb
2015-10-01DBP 20042594023.8 ppb
2015-10-01DBP 20042593824.7 ppb
2015-10-01DBP 20042593923.8 ppb
2016-01-07DBP 20043158820.9 ppb
2016-01-07DBP 20043158916.4 ppb
2016-01-07DBP 20043159017.7 ppb
2016-01-07DBP 20043159122.2 ppb
2016-04-07DBP 20043684137.2 ppb
2016-04-07DBP 20043684229.3 ppb
2016-04-07DBP 20043684337.0 ppb
2016-04-07DBP 20043684440.3 ppb
2016-07-07DBP 20044403338.9 ppb
2016-07-07DBP 20044403435.8 ppb
2016-07-07DBP 20044403536.2 ppb
2016-07-07DBP 20044403640.5 ppb
2016-10-07DBP 20045191625.9 ppb
2016-10-07DBP 20045191720.6 ppb
2016-10-07DBP 20045191820.4 ppb
2016-10-07DBP 20045191926.6 ppb
2017-01-05DBP 20045819014.9 ppb
2017-01-05DBP 20045819114.2 ppb
2017-01-05DBP 20045819212.9 ppb
2017-01-05DBP 20045819315.2 ppb
2017-04-07DBP 20046408821.7 ppb
2017-04-07DBP 20046408923.8 ppb
2017-04-07DBP 20046409027.6 ppb
2017-04-07DBP 20046409125.7 ppb
2017-07-06DBP 20047128334.1 ppb
2017-07-06DBP 20047128431.5 ppb
2017-07-06DBP 20047128531.1 ppb
2017-07-06DBP 20047128639.2 ppb
2017-10-05DBP 20047879224.9 ppb
2017-10-05DBP 20047879321.6 ppb
2017-10-05DBP 20047879419.5 ppb
2017-10-05DBP 20047879520.8 ppb
2018-01-05DBP 20048541022.6 ppb
2018-01-05DBP 20048541124.0 ppb
2018-01-05DBP 20048541219.2 ppb
2018-01-05DBP 20048541325.3 ppb
2018-04-05DBP 20049144628.3 ppb
2018-04-05DBP 20049144729.5 ppb
2018-04-05DBP 20049144830.9 ppb
2018-04-05DBP 20049144929.4 ppb
2018-07-04DBP 20049863828.7 ppb
2018-07-04DBP 20049863926.3 ppb
2018-07-04DBP 20049864026.6 ppb
2018-07-04DBP 20049864129.5 ppb
2018-10-04DBP 20050804722.0 ppb
2018-10-04DBP 20050804823.3 ppb
2018-10-04DBP 20050804916.3 ppb
2018-10-04DBP 20050805019.0 ppb
2019-01-03DBP 20051750626.7 ppb
2019-01-03DBP 20051750725.0 ppb
2019-01-03DBP 20051750819.2 ppb
2019-01-03DBP 20051750926.3 ppb
2019-04-04DBP 20052718228.4 ppb
2019-04-04DBP 20052718329.3 ppb
2019-04-04DBP 20052718434.4 ppb
2019-04-04DBP 20052718531.7 ppb
2019-07-03DBP 20053892214.9 ppb
2019-07-03DBP 20053892322.0 ppb
2019-07-03DBP 20053892413.2 ppb
2019-07-03DBP 20053892513.3 ppb
2019-10-17DBP 20055333317.4 ppb
2019-10-17DBP 20055333512.3 ppb
2019-10-17DBP 20055333717.0 ppb
2019-10-17DBP 20055333917.9 ppb