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EWG's Tap Water Database — 2021 UPDATE

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Haloacetic acids (HAA5)

Pleasant City, Village of

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.

 

26

Samples

0

Samples exceeding legal limit (MCL)

7

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20145.50 ppb41ND - 22.0 ppb
20150.850 ppb81ND - 6.80 ppb
20162.91 ppb83ND - 8.70 ppb
2017ND20ND
2018ND20ND
201920.1 ppb2217.8 ppb - 22.3 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
2014-03-04A140068637ND
2014-06-07A140213631ND
2014-09-02A140213630ND
2014-12-02A14021766222.0 ppb
2015-03-03A1502319646.80 ppb
2015-03-03A150231965ND
2015-06-02A150285366ND
2015-06-02A150285367ND
2015-09-01A150320083ND
2015-09-01A150320084ND
2015-12-01A150217661ND
2015-12-01A150320082ND
2016-03-01A1603385688.70 ppb
2016-03-01A1603385678.10 ppb
2016-06-01A1603992616.50 ppb
2016-06-01A160399262ND
2016-09-06A160435313ND
2016-09-06A160435314ND
2016-12-06A160463076ND
2016-12-06A160463077ND
2017-09-19A170539935ND
2017-09-19A170539936ND
2018-09-11A180626708ND
2018-09-11A180626709ND
2019-08-209H03366-0122.3 ppb
2019-08-209H03366-0217.8 ppb