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EWG's Tap Water Database — 2019 UPDATE

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Haloacetic acids (HAA5)

City of Emporia

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.

 

96

Samples

0

Samples exceeding legal limit (MCL)

55

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20122.98 ppb166ND - 10.00 ppb
20133.66 ppb169ND - 8.40 ppb
20142.73 ppb1615ND - 3.60 ppb
20156.81 ppb16162.00 ppb - 16.0 ppb
20160.256 ppb162ND - 2.10 ppb
20171.73 ppb167ND - 5.40 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
2012-02-21575761DFND
2012-02-21575762DFND
2012-02-21575763DF4.50 ppb
2012-02-21575760DF4.20 ppb
2012-05-08578712DFND
2012-05-08578713DFND
2012-05-08578710DFND
2012-05-08578711DFND
2012-09-11585322DFND
2012-09-11585321DFND
2012-09-11585319DFND
2012-09-11585320DFND
2012-11-27588238DF9.70 ppb
2012-11-27588239DF10.00 ppb
2012-11-27588240DF9.30 ppb
2012-11-27588241DF10.00 ppb
2013-03-12593410DF7.50 ppb
2013-03-12593411DF5.60 ppb
2013-03-12593412DF5.90 ppb
2013-03-12593413DF5.30 ppb
2013-05-14596123DFND
2013-05-14596120DFND
2013-05-14596121DF6.30 ppb
2013-05-14596122DF8.40 ppb
2013-08-20601880DFND
2013-08-20601879DFND
2013-08-20601882DFND
2013-08-20601881DFND
2013-12-03606071DF6.40 ppb
2013-12-03606069DF6.90 ppb
2013-12-03606070DFND
2013-12-03606068DF6.20 ppb
2014-02-17626543.40 ppb
2014-02-17626563.60 ppb
2014-02-17626523.30 ppb
2014-02-17626503.20 ppb
2014-04-22100330ND
2014-04-221003292.50 ppb
2014-04-221003282.60 ppb
2014-04-221003272.80 ppb
2014-07-221560952.40 ppb
2014-07-221560962.80 ppb
2014-07-221560972.70 ppb
2014-07-221560982.40 ppb
2014-10-152142663.00 ppb
2014-10-152142673.20 ppb
2014-10-152142652.80 ppb
2014-10-152142683.00 ppb
2015-01-2726773511.0 ppb
2015-01-2726773411.0 ppb
2015-01-2726773216.0 ppb
2015-01-2726773311.0 ppb
2015-04-283198163.70 ppb
2015-04-283198156.00 ppb
2015-04-283198182.30 ppb
2015-04-283198175.30 ppb
2015-07-2837461010.00 ppb
2015-07-283746075.20 ppb
2015-07-283746088.90 ppb
2015-07-283746099.50 ppb
2015-10-274188202.00 ppb
2015-10-274188192.50 ppb
2015-10-274188222.00 ppb
2015-10-274188212.60 ppb
2016-02-02484837ND
2016-02-02484838ND
2016-02-02484840ND
2016-02-02484839ND
2016-04-18529837ND
2016-04-18529835ND
2016-04-18529834ND
2016-04-18529836ND
2016-07-265901532.10 ppb
2016-07-26590152ND
2016-07-26590151ND
2016-07-26590150ND
2016-10-25647967ND
2016-10-25647966ND
2016-10-25647964ND
2016-10-256479652.00 ppb
2017-01-30678887ND
2017-01-30678886ND
2017-01-30678885ND
2017-01-30678884ND
2017-04-247464642.20 ppb
2017-04-24746469ND
2017-04-247464684.90 ppb
2017-04-247464635.40 ppb
2017-07-318077633.80 ppb
2017-07-318077653.80 ppb
2017-07-318077643.90 ppb
2017-07-318077663.60 ppb
2017-10-30868914ND
2017-10-30868913ND
2017-10-30868915ND
2017-10-30868916ND