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EWG's Tap Water Database — 2019 UPDATE

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Haloacetic acids (HAA5)

Grain Valley

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.

 

57

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND120ND
2013ND160ND
20142.70 ppb194ND - 13.3 ppb
2015ND60ND
2016ND20ND
2017ND20ND

ppb = parts per billion

State and national drinking water standards and health guidelines

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
2012-06-27AB75175ND
2012-06-27AB75176ND
2012-06-27AB75177ND
2012-06-27AB75178ND
2012-10-02AB83298ND
2012-10-02AB83300ND
2012-10-02AB83299ND
2012-10-02AB83297ND
2012-12-10AB87544ND
2012-12-10AB87545ND
2012-12-10AB87546ND
2012-12-10AB87547ND
2013-03-25AB93304ND
2013-03-25AB93303ND
2013-03-25AB93302ND
2013-03-25AB93301ND
2013-06-24AC01373ND
2013-06-24AC01372ND
2013-06-24AC01371ND
2013-06-24AC01370ND
2013-09-16AC11109ND
2013-09-16AC11110ND
2013-09-16AC11111ND
2013-09-16AC11112ND
2013-12-11AC15907ND
2013-12-11AC15906ND
2013-12-11AC15905ND
2013-12-11AC15904ND
2014-04-07AC19858ND
2014-04-07AC19856ND
2014-04-07AC19855ND
2014-06-12AC28490ND
2014-06-12AC2849113.0 ppb
2014-06-12AC2848912.9 ppb
2014-06-12AC2848812.1 ppb
2014-06-12AC28487ND
2014-06-12AC2848513.3 ppb
2014-06-12AC28484ND
2014-06-12AC28486ND
2014-09-18AC35559ND
2014-09-18AC35560ND
2014-09-18AC35561ND
2014-09-18AC35562ND
2014-12-16AC39454ND
2014-12-16AC39457ND
2014-12-16AC39456ND
2014-12-16AC39455ND
2015-03-13AC43534ND
2015-03-13AC43535ND
2015-03-13AC43537ND
2015-03-13AC43536ND
2015-06-10AC51151ND
2015-06-10AC51150ND
2016-06-09AC74805ND
2016-06-09AC74804ND
2017-06-09AC98395ND
2017-06-09AC98396ND