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EWG's Tap Water Database — 2021 UPDATE

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Haloacetic acids (HAA5)

City of Dodge 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

 

92

Samples

0

Samples exceeding legal limit (MCL)

24

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.406 ppb163ND - 2.40 ppb
20150.275 ppb162ND - 2.40 ppb
20163.27 ppb168ND - 25.0 ppb
20171.42 ppb121ND - 17.0 ppb
20181.13 ppb166ND - 4.10 ppb
20190.575 ppb164ND - 2.70 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
2014-02-1160092ND
2014-02-1160063ND
2014-02-1160058ND
2014-02-1160054ND
2014-05-051091182.40 ppb
2014-05-051091172.00 ppb
2014-05-05109116ND
2014-05-051091152.10 ppb
2014-08-04166967ND
2014-08-05166961ND
2014-08-05166960ND
2014-08-05166962ND
2014-11-03223426ND
2014-11-03223410ND
2014-11-03223409ND
2014-11-03223397ND
2015-02-02270190ND
2015-02-02270189ND
2015-02-02270188ND
2015-02-02270187ND
2015-05-04322041ND
2015-05-04322040ND
2015-05-04322042ND
2015-05-04322043ND
2015-08-03377199ND
2015-08-03377198ND
2015-08-03377197ND
2015-08-03377196ND
2015-11-034279902.00 ppb
2015-11-034279892.40 ppb
2015-11-03427988ND
2015-11-03427987ND
2016-02-08490152ND
2016-02-08490149ND
2016-02-0849015025.0 ppb
2016-02-08490151ND
2016-05-03537548ND
2016-05-035375473.60 ppb
2016-05-03537546ND
2016-05-035375453.40 ppb
2016-08-08598762ND
2016-08-085987612.10 ppb
2016-08-08598759ND
2016-08-08598758ND
2016-11-076562514.90 ppb
2016-11-076562494.50 ppb
2016-11-076562484.50 ppb
2016-11-076562474.30 ppb
2017-02-06703810ND
2017-02-28714783ND
2017-02-28714782ND
2017-02-28714781ND
2017-08-0881462717.0 ppb
2017-08-21823289ND
2017-08-21823277ND
2017-08-22823302ND
2017-11-06871638ND
2017-11-06871636ND
2017-11-06871637ND
2017-11-06871639ND
2018-02-059078303.30 ppb
2018-02-05907829ND
2018-02-05907828ND
2018-02-059078272.00 ppb
2018-05-07966206ND
2018-05-079662052.20 ppb
2018-05-07966204ND
2018-05-07966203ND
2018-08-1310243674.10 ppb
2018-08-131024363ND
2018-08-131024364ND
2018-08-1310243662.70 ppb
2018-11-051070505ND
2018-11-051070504ND
2018-11-051070503ND
2018-11-0510705023.80 ppb
2019-02-041113659ND
2019-02-041113660ND
2019-02-0411136612.10 ppb
2019-02-041113662ND
2019-05-061157666ND
2019-05-061157665ND
2019-05-061157664ND
2019-05-061157663ND
2019-08-051214943ND
2019-08-051214942ND
2019-08-051214940ND
2019-08-0512149392.70 ppb
2019-11-0512688462.30 ppb
2019-11-051268847ND
2019-11-0512688482.10 ppb
2019-11-051268845ND