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EWG's Tap Water Database — 2019 UPDATE

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Haloacetic acids (HAA5)

York Water Company

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.

 

121

Samples

0

Samples exceeding legal limit (MCL)

100

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201212.3 ppb2521ND - 17.7 ppb
201312.9 ppb2824ND - 29.8 ppb
201411.7 ppb1612ND - 30.2 ppb
201513.1 ppb1613ND - 27.1 ppb
201618.5 ppb1614ND - 35.6 ppb
201722.5 ppb2016ND - 59.9 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 on-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
2012-02-09CHAZS E. PROND
2012-05-07CHAZS, E PROND
2012-05-07STEWARTSTOWN12.9 ppb
2012-05-07YORKHANA TUR14.5 ppb
2012-05-07HOKE MILL14.4 ppb
2012-05-07W MANCESTER14.4 ppb
2012-05-07N YORK PUMPH14.2 ppb
2012-05-07MT ZION PUMP14.4 ppb
2012-05-07LOGANVILLE P14.8 ppb
2012-08-07CHAZS E. PROND
2012-08-07STEWARTSTOWN13.5 ppb
2012-08-07YORKANA TURK12.0 ppb
2012-08-07HOKE MILL AB12.5 ppb
2012-08-07W. MANCHESTE16.6 ppb
2012-08-07N. YORK PUMP15.3 ppb
2012-08-07MT ZION PUMP14.2 ppb
2012-08-07LOGANVILLE P17.5 ppb
2012-11-07CHAZS E PROSND
2012-11-07STEWARTSTOWN13.9 ppb
2012-11-07YORKANA TURK10.1 ppb
2012-11-07HOKE MILL AB13.0 ppb
2012-11-07W MANCHESTER17.1 ppb
2012-11-07N YORK PUMPH17.3 ppb
2012-11-07MT ZION PUMP17.7 ppb
2012-11-07LOGANVILLE P16.2 ppb
2013-02-07HOKE MILL AB13.5 ppb
2013-02-07W MANCHESTER12.4 ppb
2013-02-08CHAZS E PROSND
2013-02-08YORKANA TURK13.6 ppb
2013-02-08N YORK PUMPH11.8 ppb
2013-02-08MT ZION PUMP11.7 ppb
2013-02-08LOGANVILLE P12.9 ppb
2013-02-11STEWARTSTOWN13.2 ppb
2013-05-07CHAZS E PROSND
2013-05-07STEWARTSTOWN15.0 ppb
2013-05-07YORKANA TURK14.1 ppb
2013-05-08HOKE MILL13.6 ppb
2013-05-08W MANCHESTER12.6 ppb
2013-05-08N YORK PUMPH11.8 ppb
2013-05-08MT ZION PUMP13.6 ppb
2013-05-08LOGANVILLE P12.9 ppb
2013-08-07HOKE MILL8.92 ppb
2013-08-08W MANCHESTER12.9 ppb
2013-08-08N YORK PUMPH12.8 ppb
2013-08-08MT ZION PUMP12.6 ppb
2013-08-09CHAZS E PROSND
2013-08-09YORKANA TURK9.68 ppb
2013-08-12STEWARTSTOWN29.8 ppb
2013-08-12LOGANVILLE P26.3 ppb
2013-11-07STEWARTSTOWN19.1 ppb
2013-11-07W MANCHESTER24.8 ppb
2013-11-07LOGANVILLE P22.4 ppb
2013-11-11CHAZS E PROSND
2014-02-11STEWARTSTOWN10.5 ppb
2014-02-11LOGANVILLE P7.84 ppb
2014-02-12CHAZS E PROS7.96 ppb
2014-02-12W MANCHESTER8.72 ppb
2014-05-07CHAZS E PROSND
2014-05-08STEWARTSTOWN18.1 ppb
2014-05-08W MANCHESTER19.7 ppb
2014-05-08LOGANVILLE P18.8 ppb
2014-08-11CHAZS E PROSND
2014-08-11STEWARTSTOWN13.2 ppb
2014-08-11W MANCHESTER30.2 ppb
2014-08-11LOGANVILLE P28.3 ppb
2014-11-07CHAZS E PROSND
2014-11-07STEWARTSTOWNND
2014-11-07MANHESTER PU12.0 ppb
2014-11-07LOGANVILLE P11.7 ppb
2015-02-101249758313.8 ppb
2015-02-101249759510.6 ppb
2015-02-1112497577ND
2015-02-111249758911.2 ppb
2015-05-0812863926ND
2015-05-111286393215.7 ppb
2015-05-111286393815.0 ppb
2015-05-11128639447.61 ppb
2015-08-1113246443ND
2015-08-111324644920.2 ppb
2015-08-111324645520.8 ppb
2015-08-111324646120.1 ppb
2015-11-10136156305.30 ppb
2015-11-101361563627.1 ppb
2015-11-101361564220.8 ppb
2015-11-101361564821.1 ppb
2016-02-10139676921.60 ppb
2016-02-101396769818.9 ppb
2016-02-101396770417.3 ppb
2016-02-101396771018.2 ppb
2016-05-0614384028ND
2016-05-111438404529.7 ppb
2016-05-111438405120.8 ppb
2016-05-111438403919.5 ppb
2016-08-301505594933.4 ppb
2016-08-301505595527.1 ppb
2016-08-3115055961ND
2016-08-311505596735.6 ppb
2016-11-071534858021.6 ppb
2016-11-071534859825.5 ppb
2016-11-09153485862.90 ppb
2016-11-101534859223.7 ppb
2017-02-071577374416.2 ppb
2017-02-071577375012.7 ppb
2017-02-071577373213.6 ppb
2017-02-0815773738ND
2017-05-091623458132.2 ppb
2017-05-3016234665ND
2017-05-301623466328.0 ppb
2017-05-301623466425.3 ppb
2017-08-0816705734ND
2017-08-101670574659.9 ppb
2017-08-101670574035.0 ppb
2017-08-101670575241.9 ppb
2017-11-081714274626.2 ppb
2017-11-081714278827.4 ppb
2017-11-081714277025.5 ppb
2017-11-081714276423.9 ppb
2017-11-081714277629.1 ppb
2017-11-081714278227.4 ppb
2017-11-0917142752ND
2017-11-091714275825.3 ppb