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EWG's Tap Water Database — 2021 UPDATE

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Haloacetic acids (HAA5)

Randolph Twp Public Works 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

 

100

Samples

0

Samples exceeding legal limit (MCL)

18

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND200ND
2015ND160ND
20160.107 ppb161ND - 1.71 ppb
20170.488 ppb162ND - 4.16 ppb
20181.19 ppb1614ND - 3.80 ppb
20190.0788 ppb161ND - 1.26 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
2014-02-12340212033ND
2014-02-12340212034ND
2014-02-12340212035ND
2014-02-12340212036ND
2014-05-07340507046ND
2014-05-07340507048ND
2014-05-07340507044ND
2014-05-07340507050ND
2014-07-03340703045ND
2014-07-03340703047ND
2014-07-03340703043ND
2014-07-03340703049ND
2014-08-05340805026ND
2014-08-05340805024ND
2014-08-05340805022ND
2014-08-05340805028ND
2014-11-04341104028ND
2014-11-04341104024ND
2014-11-04341104022ND
2014-11-04341104026ND
2015-02-045020036-04ND
2015-02-045020036-01ND
2015-02-045020036-02ND
2015-02-045020036-03ND
2015-05-055050100-04ND
2015-05-055050100-01ND
2015-05-055050100-02ND
2015-05-055050100-03ND
2015-08-045080036-04ND
2015-08-045080036-01ND
2015-08-045080036-02ND
2015-08-045080036-03ND
2015-11-035110054-04ND
2015-11-035110054-02ND
2015-11-035110054-03ND
2015-11-035110054-01ND
2016-02-16360216014ND
2016-02-16360216018ND
2016-02-16360216020ND
2016-02-16360216016ND
2016-05-03360503016ND
2016-05-03360503020ND
2016-05-03360503022ND
2016-05-03360503018ND
2016-08-02360802017ND
2016-08-02360802021ND
2016-08-023608020231.71 ppb
2016-08-02360802019ND
2016-11-01361101014ND
2016-11-01361101020ND
2016-11-01361101016ND
2016-11-01361101018ND
2017-02-07370207022ND
2017-02-07370207024ND
2017-02-07370207026ND
2017-02-07370207028ND
2017-05-03370503025ND
2017-05-03370503021ND
2017-05-03370503023ND
2017-05-03370503027ND
2017-08-023708020314.16 ppb
2017-08-02370802027ND
2017-08-02370802029ND
2017-08-023708020333.64 ppb
2017-11-02371102010ND
2017-11-02371102006ND
2017-11-02371102012ND
2017-11-02371102008ND
2018-02-06HA022018-561.27 ppb
2018-02-06HA022018-551.80 ppb
2018-02-06HA022018-573.80 ppb
2018-02-06HA022018-581.15 ppb
2018-05-01HA051018-150.570 ppb
2018-05-01HA051018-140.620 ppb
2018-05-01HA051018-130.840 ppb
2018-05-01HA051018-120.970 ppb
2018-08-07HA082418-53ND
2018-08-07HA082418-501.03 ppb
2018-08-07HA082418-521.28 ppb
2018-08-07HA082418-49ND
2018-11-05HA111818-081.26 ppb
2018-11-05HA111818-061.46 ppb
2018-11-05HA111818-091.68 ppb
2018-11-05HA111818-071.30 ppb
2019-02-077079005001-HAAND
2019-02-077079005004-HAAND
2019-02-077079005003-HAAND
2019-02-077079005002-HAAND
2019-05-08390508011.2ND
2019-05-08390508014.2ND
2019-05-08390508013.2ND
2019-05-08390508012.2ND
2019-08-07390807013.2ND
2019-08-07390807010.2ND
2019-08-07390807011.2ND
2019-08-07390807012.2ND
2019-11-08391108015.2ND
2019-11-08391108016.2ND
2019-11-08391108017.21.26 ppb
2019-11-08391108018.2ND