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EWG's Tap Water Database — 2019 UPDATE

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Haloacetic acids (HAA5)

City of Liberal

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.

 

52

Samples

0

Samples exceeding legal limit (MCL)

9

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND10ND
2013ND50ND
20141.55 ppb163ND - 16.0 ppb
20150.538 ppb163ND - 3.80 ppb
20160.600 ppb122ND - 4.70 ppb
20171.80 ppb21ND - 3.60 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
2012-08-06583373DFND
2013-08-19601870DFND
2013-11-12605593DFND
2013-11-12605594DFND
2013-11-12605595DFND
2013-11-12605596DFND
2014-02-1060220ND
2014-02-1060221ND
2014-02-106022216.0 ppb
2014-02-1060223ND
2014-05-05110671ND
2014-05-05110670ND
2014-05-05110669ND
2014-05-051106683.50 ppb
2014-08-18175995ND
2014-08-18175993ND
2014-08-181759925.30 ppb
2014-08-18175994ND
2014-11-18233943ND
2014-11-18233945ND
2014-11-18233947ND
2014-11-18233949ND
2015-02-09277241ND
2015-02-09277239ND
2015-02-092772423.80 ppb
2015-02-09277240ND
2015-05-11331839ND
2015-05-11331837ND
2015-05-113318382.70 ppb
2015-05-113318362.10 ppb
2015-08-31397036ND
2015-08-31397037ND
2015-08-31397035ND
2015-08-31397034ND
2015-11-02428000ND
2015-11-02427998ND
2015-11-02427997ND
2015-11-02427999ND
2016-02-29500710ND
2016-02-29500713ND
2016-02-295007122.50 ppb
2016-02-29500711ND
2016-05-16547729ND
2016-05-16547728ND
2016-05-165477274.70 ppb
2016-05-16547730ND
2016-08-22608718ND
2016-08-22608719ND
2016-08-22608720ND
2016-08-22608717ND
2017-08-29830068ND
2017-08-298300593.60 ppb