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Haloacetic acids (HAA5)

Warminster Municipal Authority

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.

 

82

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20100.708 ppb123ND - 6.10 ppb
20112.50 ppb1211ND - 6.10 ppb
20122.03 ppb128ND - 6.40 ppb
20132.44 ppb1410ND - 6.20 ppb
20141.97 ppb1612ND - 5.10 ppb
20151.38 ppb167ND - 5.70 ppb

ppb = parts per billion.

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 60 ppb

The enforceable federal standard that defines the highest level of a contaminant allowed in drinking water.

ppb = parts per billion.

All test results

Date Lab ID Result
2010-02-239832480002ND
2010-02-2398324800011.30 ppb
2010-02-239832480003ND
2010-04-139839864002ND
2010-04-139839864001ND
2010-04-139839864003ND
2010-08-309862844001ND
2010-08-3098628440026.10 ppb
2010-08-309862844003ND
2010-11-1598763610021.10 ppb
2010-11-159876361001ND
2010-11-159876361003ND
2011-02-1598896830031.10 ppb
2011-02-1598896830021.30 ppb
2011-02-1598896830011.30 ppb
2011-04-159900501001ND
2011-04-1599005010021.40 ppb
2011-04-1599005010031.40 ppb
2011-09-1699270860031.80 ppb
2011-09-1699270860013.90 ppb
2011-09-1699270860023.50 ppb
2011-12-0699410750033.20 ppb
2011-12-0699410750016.10 ppb
2011-12-0699410750025.00 ppb
2012-02-2899545230022.60 ppb
2012-02-2899545230031.000 ppb
2012-02-289954523001ND
2012-05-1899686030034.60 ppb
2012-05-1899686030016.40 ppb
2012-05-1899686030025.50 ppb
2012-09-189989149001ND
2012-09-1899891490021.40 ppb
2012-09-189989149003ND
2012-11-0899976270031.20 ppb
2012-11-0899976270021.70 ppb
2012-11-089997627001ND
2013-02-2010132580014.10 ppb
2013-02-2010132580025.40 ppb
2013-02-2010132580034.50 ppb
2013-05-2110282890032.70 ppb
2013-05-211028289001ND
2013-05-2110282890025.60 ppb
2013-08-2010442080021.10 ppb
2013-08-2010442080031.80 ppb
2013-08-2010442080041.40 ppb
2013-08-201044208001ND
2013-11-2010599890031.40 ppb
2013-11-2010599890026.20 ppb
2013-11-201059989004ND
2013-11-201059989001ND
2014-02-1910726990041.20 ppb
2014-02-191072699002ND
2014-02-1910726990032.30 ppb
2014-02-191072699001ND
2014-05-2020078510043.20 ppb
2014-05-2020078510011.20 ppb
2014-05-2020078510033.10 ppb
2014-05-2020078510021.30 ppb
2014-08-1920247290021.20 ppb
2014-08-1920247290013.30 ppb
2014-08-1920247290045.10 ppb
2014-08-1920247290034.50 ppb
2014-11-172040720002ND
2014-11-1720407200034.10 ppb
2014-11-1720407200041.000 ppb
2014-11-172040720001ND
2015-02-1812389414ND
2015-02-1812389408ND
2015-02-18123894261.10 ppb
2015-02-1812389420ND
2015-05-1812737540ND
2015-05-18127375464.00 ppb
2015-05-1812737534ND
2015-05-18127375525.70 ppb
2015-08-19131227752.80 ppb
2015-08-1913122757ND
2015-08-1913122763ND
2015-08-19131227691.80 ppb
2015-11-20135023723.60 ppb
2015-11-20135023783.10 ppb
2015-11-2013502366ND
2015-11-2013502360ND