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EWG's Tap Water Database — 2021 UPDATE

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Haloacetic acids (HAA5)

Cromwell Fire District 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

 

95

Samples

0

Samples exceeding legal limit (MCL)

28

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.173 ppb152ND - 1.30 ppb
20150.406 ppb164ND - 3.00 ppb
20160.581 ppb165ND - 3.30 ppb
20170.469 ppb165ND - 3.00 ppb
20180.694 ppb167ND - 2.70 ppb
20190.650 ppb165ND - 2.40 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
2014-01-14BF98733HAA5ND
2014-01-14BF98734HAA5ND
2014-01-14BF98735HAA5ND
2014-01-14BF98732HAA5ND
2014-02-25BG12770HAA51.30 ppb
2014-04-22BG35619HAA5ND
2014-04-22BG35620HAA5ND
2014-04-22BG35621HAA5ND
2014-04-22BG35622HAA5ND
2014-05-27BG48886HAA5ND
2014-07-22BG79666HAA5ND
2014-07-22BG79667HAA5ND
2014-07-22BG79665HAA5ND
2014-07-22BG79664HAA51.30 ppb
2014-11-24BH45136HAA5ND
2015-01-13BH62502HAA5ND
2015-01-13BH62501HAA5ND
2015-01-13BH62503HAA5ND
2015-01-13BH62500HAA5ND
2015-04-14BJ02140HAA51.20 ppb
2015-04-14BJ02142HAA5ND
2015-04-14BJ02139HAA53.00 ppb
2015-04-14BJ02141HAA5ND
2015-07-14BJ46024HAA5ND
2015-07-14BJ46025HAA5ND
2015-07-14BJ46027HAA5ND
2015-07-14BJ46026HAA5ND
2015-10-15BK08380HAA51.000 ppb
2015-10-15BK08379HAA5ND
2015-10-15BK08381HAA51.30 ppb
2015-10-15BK08382HAA5ND
2016-01-26BK57526HAA5ND
2016-01-26BK57527HAA5ND
2016-01-26BK57528HAA5ND
2016-01-26BK57529HAA5ND
2016-04-26BN19505HAA5ND
2016-04-26BN19506HAA5ND
2016-04-26BN19504HAA5ND
2016-04-26BN19503HAA5ND
2016-07-12BN71527HAA5ND
2016-07-12BN71528HAA51.000 ppb
2016-07-12BN71529HAA53.30 ppb
2016-07-12BN71530HAA5ND
2016-10-11BV45154HAA5ND
2016-10-11BV45155HAA51.20 ppb
2016-10-11BV45156HAA51.10 ppb
2016-10-11BV45157HAA52.70 ppb
2017-01-24BX37057HAA5ND
2017-01-24BX37054HAA5ND
2017-01-24BX37055HAA5ND
2017-01-24BX37056HAA5ND
2017-04-25BY09440HAA51.000 ppb
2017-04-25BY09441HAA51.10 ppb
2017-04-25BY09442HAA5ND
2017-04-25BY09439HAA5ND
2017-07-25BY71908HAA51.20 ppb
2017-07-25BY71909HAA51.20 ppb
2017-07-25BY71910HAA53.00 ppb
2017-07-25BY71911HAA5ND
2017-10-24BZ25926HAA5ND
2017-10-24BZ25925HAA5ND
2017-10-24BZ25924HAA5ND
2017-10-24BZ25923HAA5ND
2018-01-23BZ78967HAA5ND
2018-01-23BZ78968HAA52.00 ppb
2018-01-23BZ78969HAA5ND
2018-01-23BZ78970HAA5ND
2018-04-24CA34727HAA52.70 ppb
2018-04-24CA34728HAA51.10 ppb
2018-04-24CA34729HAA5ND
2018-04-24CA34730HAA5ND
2018-07-24CA96450ND
2018-07-24CA964481.000 ppb
2018-07-24CA964472.00 ppb
2018-07-24CA964491.10 ppb
2018-10-23CB79904ND
2018-10-23CB79905ND
2018-10-23CB799061.20 ppb
2018-10-23CB79907ND
2019-01-22CC32593ND
2019-01-22CC325942.20 ppb
2019-01-22CC32595ND
2019-01-22CC32596ND
2019-04-23CC99701ND
2019-04-23CC99703ND
2019-04-23CC99702ND
2019-04-23CC997002.40 ppb
2019-07-23CD62966ND
2019-07-23CD62967ND
2019-07-23CD629681.000 ppb
2019-07-23CD62969ND
2019-10-22CE45286ND
2019-10-22CE452872.40 ppb
2019-10-22CE452882.40 ppb
2019-10-22CE45289ND