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EWG's Tap Water Database — 2021 UPDATE

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Haloacetic acids (HAA5)

Yonkers City

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

 

177

Samples

1

Samples exceeding legal limit (MCL)

176

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
201427.2 ppb32323.30 ppb - 48.0 ppb
201530.4 ppb161620.0 ppb - 51.0 ppb
201631.3 ppb32329.30 ppb - 43.0 ppb
201728.6 ppb32321.50 ppb - 43.0 ppb
201835.2 ppb32323.40 ppb - 57.0 ppb
201936.0 ppb3332ND - 69.9 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
2014-02-04201402050179DBP23.0 ppb
2014-02-04201402050182DBP22.0 ppb
2014-02-04201402050177DBP30.0 ppb
2014-02-04201402050176DBP31.0 ppb
2014-02-04201402050175DBP35.0 ppb
2014-02-04201402050178DBP9.50 ppb
2014-02-04201402050181DBP23.0 ppb
2014-02-04201402050180DBP25.0 ppb
2014-05-08201405090632DBP43.0 ppb
2014-05-08201405090631DBP44.0 ppb
2014-05-08201405090633DBP37.0 ppb
2014-05-08201405090628DBP43.0 ppb
2014-05-08201405090630DBP36.0 ppb
2014-05-08201405090626DBP48.0 ppb
2014-05-08201405090627DBP39.0 ppb
2014-05-08201405090629DBP13.0 ppb
2014-08-07201408080285DBP26.0 ppb
2014-08-07201408080281DBP22.0 ppb
2014-08-07201408080284DBP28.0 ppb
2014-08-07201408080287DBP26.0 ppb
2014-08-07201408080282DBP19.0 ppb
2014-08-07201408080283DBP3.30 ppb
2014-08-07201408080280DBP24.0 ppb
2014-08-07201408080286DBP32.0 ppb
2014-11-06201411070599 DBP21.0 ppb
2014-11-06201411070595 DBP35.0 ppb
2014-11-06201411070600 DBP37.0 ppb
2014-11-06201411070601 DBP23.0 ppb
2014-11-06201411070597 DBP11.0 ppb
2014-11-06201411070602 DBP27.0 ppb
2014-11-06201411070596 DBP28.0 ppb
2014-11-06201411070598 DBP5.20 ppb
2015-02-05201502060181 DBP25.0 ppb
2015-02-05201502060186 DBP24.0 ppb
2015-02-05201502060185 DBP24.0 ppb
2015-02-05201502060187 DBP21.0 ppb
2015-02-05201502060180 DBP28.0 ppb
2015-02-05201502060184 DBP20.0 ppb
2015-02-05201502060183 DBP25.0 ppb
2015-02-05201502060182 DBP32.0 ppb
2015-05-04201505120255 DBP51.0 ppb
2015-05-04201505120256 DBP33.0 ppb
2015-05-04201505120257 DBP38.0 ppb
2015-05-08201505120262 DBP27.0 ppb
2015-05-08201505120260 DBP38.0 ppb
2015-05-08201505120258 DBP33.0 ppb
2015-05-08201505120259 DBP28.0 ppb
2015-05-08201505120261 DBP40.0 ppb
2016-02-04201602050219 DBP32.0 ppb
2016-02-04201602050217 DBP29.0 ppb
2016-02-04201602050218 DBP14.0 ppb
2016-02-04201602050222 DBP27.0 ppb
2016-02-04201602050220 DBP28.0 ppb
2016-02-04201602050215 DBP37.0 ppb
2016-02-04201602050216 DBP30.0 ppb
2016-02-04201602050221 DBP23.0 ppb
2016-05-05201605060281 DBP28.0 ppb
2016-05-05201605060285 DBP36.0 ppb
2016-05-05201605060280 DBP40.0 ppb
2016-05-05201605060284 DBP41.0 ppb
2016-05-05201605060279 DBP42.0 ppb
2016-05-05201605060282 DBP26.0 ppb
2016-05-05201605060283 DBP35.0 ppb
2016-05-05201605060286 DBP33.0 ppb
2016-08-04201608050760 DBP35.0 ppb
2016-08-0420160805074 DBP33.0 ppb
2016-08-04201608050766 DBP42.0 ppb
2016-08-04201608050759 DBP34.0 ppb
2016-08-04201608050763 DBP43.0 ppb
2016-08-04201608050761 DBP32.0 ppb
2016-08-04201608050762 DBP9.30 ppb
2016-08-04201608050765 DBP39.0 ppb
2016-11-04201611080637 DBP38.0 ppb
2016-11-04201611080634 DBP27.0 ppb
2016-11-04201611080636 DBP34.0 ppb
2016-11-04201611080632 DBP29.0 ppb
2016-11-04201611080633 DBP27.0 ppb
2016-11-04201611080635 DBP27.0 ppb
2016-11-04201611080638 DBP24.0 ppb
2016-11-04201611080639 DBP28.0 ppb
2017-02-08201702091190 DBP20.0 ppb
2017-02-08201702091184 DBP18.0 ppb
2017-02-08201702091183 DBP24.0 ppb
2017-02-08201702091185 DBP23.0 ppb
2017-02-08201702091187 DBP21.0 ppb
2017-02-08201702091188 DBP23.0 ppb
2017-02-08201702091189 DBP24.0 ppb
2017-02-08201702091186 DBP29.0 ppb
2017-06-01201706020314-DBP33.0 ppb
2017-06-01201706020317-DBP42.0 ppb
2017-06-01201706020318-DBP32.0 ppb
2017-06-01201706020313-DBP43.0 ppb
2017-06-01201706020312-DBP33.0 ppb
2017-06-01201706020316-DBP34.0 ppb
2017-06-01201706020315-DBP19.0 ppb
2017-06-01201706020319-DBP40.0 ppb
2017-08-07201708081017-DBP37.0 ppb
2017-08-07201708081018-DBP31.0 ppb
2017-08-07201708081019-DBP38.0 ppb
2017-08-07201708081015-DBP26.0 ppb
2017-08-07201708081014-DBP35.0 ppb
2017-08-07201708081016-DBP21.0 ppb
2017-08-07201708081020-DBP39.0 ppb
2017-08-07201708081013-DBP1.50 ppb
2017-11-09201711100262-DBP30.0 ppb
2017-11-09201711100257-DBP22.0 ppb
2017-11-09201711100261-DBP30.0 ppb
2017-11-09201711100255-DBP29.0 ppb
2017-11-09201711100256-DBP29.0 ppb
2017-11-09201711100260-DBP37.0 ppb
2017-11-09201711100258-DBP18.0 ppb
2017-11-09201711100259-DBP33.0 ppb
2018-02-13201802140882-DBP24.0 ppb
2018-02-13201802140883-DBP29.0 ppb
2018-02-13201802140886-DBP28.0 ppb
2018-02-13201802140881-DBP30.0 ppb
2018-02-13201802140888-DBP25.0 ppb
2018-02-13201802140885-DBP26.0 ppb
2018-02-13201802140884-DBP34.0 ppb
2018-02-13201802140887-DBP25.0 ppb
2018-05-14201805150315-DBP46.0 ppb
2018-05-14201805150320-DBP40.0 ppb
2018-05-14201805150314-DBP57.0 ppb
2018-05-14201805150321-DBP40.0 ppb
2018-05-14201805150318-DBP41.0 ppb
2018-05-14201805150316-DBP35.0 ppb
2018-05-14201805150319-DBP53.0 ppb
2018-05-14201805150317-DBP34.0 ppb
2018-08-06201808080563-DBP27.0 ppb
2018-08-06201808080566-DBP43.0 ppb
2018-08-06201808080561-DBP37.0 ppb
2018-08-06201808080562-DBP46.0 ppb
2018-08-06201808080565-DBP39.0 ppb
2018-08-06201808080567-DBP37.0 ppb
2018-08-06201808080568-DBP40.0 ppb
2018-08-06201808080564-DBP3.40 ppb
2018-11-07201811090243-DBP40.0 ppb
2018-11-07201811090239-DBP22.0 ppb
2018-11-07201811090240-DBP41.0 ppb
2018-11-07201811090237-DBP44.0 ppb
2018-11-07201811090238-DBP14.0 ppb
2018-11-07201811090242-DBP38.0 ppb
2018-11-07201811090241-DBP44.0 ppb
2018-11-07201811090236-DBP45.0 ppb
2019-02-057078668004-DBP224.4 ppb
2019-02-057078668008-DBP238.9 ppb
2019-02-057078668001-DBP254.5 ppb
2019-02-057078668002-DBP246.9 ppb
2019-02-057078668007-DBP240.3 ppb
2019-02-057078668005-DBP245.0 ppb
2019-02-05201902060648-DBPND
2019-02-057078668003-DBP226.4 ppb
2019-02-057078668006-DBP248.2 ppb
2019-05-02201905030243-DBP69.9 ppb
2019-05-02201905030244-DBP54.4 ppb
2019-05-02201905030245-DBP24.2 ppb
2019-05-02201905030246-DBP38.3 ppb
2019-05-02201905030250-DBP43.5 ppb
2019-05-02201905030248-DBP53.0 ppb
2019-05-02201205030249-DBP40.6 ppb
2019-05-02201905030247-DBP44.1 ppb
2019-08-06201908070681-DBP40.1 ppb
2019-08-06201908070682-DBP22.1 ppb
2019-08-06201908070684-DBP42.6 ppb
2019-08-06201908070687-DBP42.2 ppb
2019-08-06201908070680-DBP37.0 ppb
2019-08-06201908070683-DBP13.3 ppb
2019-08-06201908070685-DBP43.3 ppb
2019-08-06201908070686-DBP38.7 ppb
2019-11-0670114414003 DBP29.80 ppb
2019-11-0670111070006 DBP233.5 ppb
2019-11-0670111070005 DBP229.3 ppb
2019-11-0670111070007 DBP227.8 ppb
2019-11-0670114414001 DBP238.0 ppb
2019-11-0670111070001 DBP233.0 ppb
2019-11-0670111070008 DBP228.6 ppb
2019-11-067011441402 DBP216.1 ppb