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EWG's Tap Water Database — 2021 UPDATE

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Haloacetic acids (HAA5)

Easton Utilities

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

 

60

Samples

0

Samples exceeding legal limit (MCL)

17

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015N/A00N/A
20160.519 ppb165ND - 2.70 ppb
20170.481 ppb164ND - 3.70 ppb
20180.762 ppb165ND - 3.67 ppb
20190.518 ppb123ND - 2.72 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
2016-01-1398524-2ND
2016-01-1398524-1ND
2016-01-1398524-3ND
2016-01-1398524-41.25 ppb
2016-04-2099805-41.30 ppb
2016-04-2099805-3ND
2016-04-2099805-1ND
2016-04-2099805-2ND
2016-07-18101066-2ND
2016-07-18101066-32.70 ppb
2016-07-18101066-41.50 ppb
2016-07-18101066-1ND
2016-10-12102385-4ND
2016-10-12102385-51.55 ppb
2016-10-12102385-3ND
2016-10-12102385-2ND
2017-01-18103684-3ND
2017-01-18103684-4ND
2017-01-18103684-2ND
2017-01-18103684-5ND
2017-04-17104735-4ND
2017-04-17104735-21.40 ppb
2017-04-17104735-33.70 ppb
2017-04-25104735-1ND
2017-07-13106010-11.10 ppb
2017-07-13106010-2ND
2017-07-13106010-41.50 ppb
2017-07-13106010-3ND
2017-10-13107358-4ND
2017-10-13107358-2ND
2017-10-13107358-1ND
2017-10-13107358-3ND
2018-01-10108660-2ND
2018-01-10108660-1ND
2018-01-10108660-3ND
2018-01-10108660-4BND
2018-04-13110291-2ND
2018-04-13110291-1ND
2018-04-13110291-3ND
2018-04-13110291-4ND
2018-07-06JR-18-0352ND
2018-07-06JR-18-03552.77 ppb
2018-07-06JR-18-03542.63 ppb
2018-07-06JR-18-03531.21 ppb
2018-10-12JR180562ND
2018-10-12JR1805683.67 ppb
2018-10-12JR1805641.91 ppb
2018-10-12JR180560ND
2019-01-08JR-19-0055ND
2019-01-08JR-19-0057ND
2019-01-08JR-19-0056ND
2019-01-08JR-19-00582.72 ppb
2019-04-02JR-19-0453ND
2019-04-02JR-19-0454ND
2019-04-02JR-19-04551.50 ppb
2019-04-02JR-19-0452ND
2019-07-09JR-19-0670ND
2019-07-09JR-19-0672ND
2019-10-01JR-19-0860ND
2019-10-01JR-19-08572.00 ppb