Know Your Environment. Protect Your Health.

Haloacetic acids (HAA5)

Cooper County Consolidated Public Water Supply District # 1

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.

 

50

Samples

3

Samples exceeding legal limit (MCL)

27

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201823.4 ppb84ND - 59.5 ppb
201936.9 ppb85ND - 113.0 ppb
202030.6 ppb106ND - 94.8 ppb
202115.1 ppb85ND - 32.3 ppb
202212.8 ppb84ND - 37.0 ppb
20233.73 ppb83ND - 22.4 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2018-02-23AD14261ND
2018-02-23AD1426217.3 ppb
2018-05-24AD2049559.5 ppb
2018-05-24AD20494ND
2018-08-15AD3118251.7 ppb
2018-08-15AD31183ND
2018-11-15AD3570458.6 ppb
2018-11-15AD35705ND
2019-03-14AD4140537.2 ppb
2019-03-14AD41406ND
2019-05-21AD47454ND
2019-05-21AD4745349.7 ppb
2019-08-27AD53910113.0 ppb
2019-08-27AD53911ND
2019-12-16AD5959946.4 ppb
2019-12-16AD5960048.8 ppb
2020-02-122002026ND
2020-02-12200202594.8 ppb
2020-05-29200890147.3 ppb
2020-05-292008900ND
2020-06-15201078376.2 ppb
2020-06-152010784ND
2020-08-2020143444.42 ppb
2020-09-28201643550.6 ppb
2020-11-232018055ND
2020-11-23201805432.9 ppb
2021-03-012100760ND
2021-03-01210075926.2 ppb
2021-05-18211094432.3 ppb
2021-05-1821109453.45 ppb
2021-08-162115304ND
2021-08-16211530327.4 ppb
2021-11-152119523ND
2021-11-15211952231.8 ppb
2022-02-14220205616.0 ppb
2022-02-142202057ND
2022-05-23221156328.5 ppb
2022-05-232211564ND
2022-08-17221626437.0 ppb
2022-08-172216265ND
2022-11-222221177ND
2022-11-22222117620.9 ppb
2023-02-22230067722.4 ppb
2023-02-222300678ND
2023-05-1523081371.35 ppb
2023-05-1523081366.10 ppb
2023-08-162313364ND
2023-08-162313363ND
2023-11-162318302ND
2023-11-162318301ND