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EWG's Tap Water Database — 2021 UPDATE

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Haloacetic acids (HAA5)

Bridgeton City 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

 

96

Samples

0

Samples exceeding legal limit (MCL)

50

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20143.24 ppb1611ND - 7.23 ppb
20152.00 ppb1613ND - 4.30 ppb
20160.983 ppb169ND - 3.90 ppb
20170.938 ppb168ND - 5.00 ppb
20180.669 ppb164ND - 4.00 ppb
20190.481 ppb165ND - 2.30 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
2014-02-04L4869265-15.39 ppb
2014-02-04L4869265-37.23 ppb
2014-02-04L4869265-4ND
2014-02-04L4869265-24.94 ppb
2014-05-13L4974692-11.92 ppb
2014-05-13L4974692-3ND
2014-05-13L4974692-42.44 ppb
2014-05-13L4974692-25.75 ppb
2014-08-12L5101570-2ND
2014-08-12L5101570-4ND
2014-08-12L5101570-12.98 ppb
2014-08-12L5101570-34.00 ppb
2014-11-13L5247491-4ND
2014-11-13L5247491-25.28 ppb
2014-11-13L5247491-17.02 ppb
2014-11-13L5247491-34.81 ppb
2015-02-18L5364422-23.94 ppb
2015-02-18L5364422-13.51 ppb
2015-02-18L5364422-40.710 ppb
2015-02-18L5364422-31.80 ppb
2015-05-12L5497476-23.03 ppb
2015-05-12L5497476-41.000 ppb
2015-05-12L5497476-10.410 ppb
2015-05-12L5497476-3ND
2015-08-18L5652037-23.36 ppb
2015-08-18L5652037-41.31 ppb
2015-08-18L5652037-12.80 ppb
2015-08-18L5652037-3ND
2015-11-10L5817542-12.28 ppb
2015-11-10L5817542-33.60 ppb
2015-11-10L5817542-24.30 ppb
2015-11-10L5817542-4ND
2016-02-18L5966476-23.90 ppb
2016-02-18L5966476-40.860 ppb
2016-02-18L5966476-31.24 ppb
2016-02-18L5966476-10.830 ppb
2016-05-0334416282.00 ppb
2016-05-033441631ND
2016-05-033441630ND
2016-05-0334416292.20 ppb
2016-08-023511712ND
2016-08-023511715ND
2016-08-0235117142.10 ppb
2016-08-0235117131.40 ppb
2016-11-013576950ND
2016-11-013576949ND
2016-11-0135769511.20 ppb
2016-11-013576952ND
2017-02-073633926ND
2017-02-073633923ND
2017-02-0736339251.60 ppb
2017-02-073633924ND
2017-05-023686286ND
2017-05-0236862831.20 ppb
2017-05-0236862841.000 ppb
2017-05-3037053481.60 ppb
2017-08-083751965ND
2017-08-0837519621.20 ppb
2017-08-0837519631.10 ppb
2017-08-0837519642.30 ppb
2017-11-063815675ND
2017-11-063815677ND
2017-11-063815674ND
2017-11-0938203515.00 ppb
2018-02-1338724192.60 ppb
2018-02-133872417ND
2018-02-133872418ND
2018-02-133872420ND
2018-05-0139254074.00 ppb
2018-05-013925405ND
2018-05-013925408ND
2018-05-013925406ND
2018-08-074016315ND
2018-08-074016313ND
2018-08-0740163142.70 ppb
2018-08-074016312ND
2018-11-074116269ND
2018-11-074116267ND
2018-11-0741162681.40 ppb
2018-11-074116266ND
2019-02-053014568001ND
2019-02-0530145680031.40 ppb
2019-02-053014568002ND
2019-02-053014568004ND
2019-05-1430337360031.60 ppb
2019-05-143033736004ND
2019-05-1430337360011.40 ppb
2019-05-143033736002ND
2019-08-063049872003ND
2019-08-0630498720011.000 ppb
2019-08-063049872002ND
2019-08-063049872004ND
2019-11-063068365001ND
2019-11-063068365002ND
2019-11-063068365004ND
2019-11-0630683650032.30 ppb