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EWG's Tap Water Database — 2021 UPDATE

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Haloacetic acids (HAA5)

Jackson County PWSD 2

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.

 

58

Samples

0

Samples exceeding legal limit (MCL)

26

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20143.88 ppb164ND - 22.3 ppb
20157.01 ppb104ND - 28.2 ppb
201610.2 ppb85ND - 23.6 ppb
20175.66 ppb83ND - 19.6 ppb
201811.5 ppb86ND - 21.2 ppb
20194.64 ppb84ND - 13.4 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
2014-03-12AC19870ND
2014-03-12AC19869ND
2014-03-12AC19872ND
2014-03-12AC1987111.9 ppb
2014-06-16AC2856722.3 ppb
2014-06-16AC28569ND
2014-06-16AC28571ND
2014-06-16AC28573ND
2014-09-12AC3559312.8 ppb
2014-09-12AC35594ND
2014-09-12AC3559515.0 ppb
2014-09-12AC35596ND
2014-12-12AC39476ND
2014-12-12AC39477ND
2014-12-12AC39478ND
2014-12-12AC39479ND
2015-03-10AC4356015.8 ppb
2015-03-10AC4355711.0 ppb
2015-03-10AC43558ND
2015-03-10AC43559ND
2015-06-16AC51206ND
2015-06-16AC5120528.2 ppb
2015-09-10AC59495ND
2015-09-10AC5949415.1 ppb
2015-12-15AC63929ND
2015-12-15AC63930ND
2016-03-15AC6762811.5 ppb
2016-03-18AC6907711.9 ppb
2016-06-24AC7768819.8 ppb
2016-06-24AC7768723.6 ppb
2016-09-08AC83827ND
2016-09-08AC8382814.9 ppb
2016-12-14AC88436ND
2016-12-14AC88437ND
2017-03-15AC9212719.6 ppb
2017-03-15AC92126ND
2017-06-19AC98449ND
2017-06-19AC9845013.1 ppb
2017-09-12AD0643212.6 ppb
2017-09-12AD06433ND
2017-12-12AD10596ND
2017-12-12AD10595ND
2018-03-16AD1647315.2 ppb
2018-03-16AD1647417.3 ppb
2018-06-20AD2727112.1 ppb
2018-06-20AD2727214.9 ppb
2018-09-10AD32902ND
2018-09-10AD3290321.2 ppb
2018-12-11AD3676211.4 ppb
2018-12-11AD36763ND
2019-03-12AD40501ND
2019-03-12AD40502ND
2019-06-17AD49080ND
2019-06-17AD49081ND
2019-09-10AD5517013.4 ppb
2019-09-10AD551715.37 ppb
2019-12-11AD5908410.00 ppb
2019-12-11AD590858.33 ppb