Know Your Environment. Protect Your Health.

Haloacetic acids (HAA5)

Hoosick Falls

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.

 

88

Samples

0

Samples exceeding legal limit (MCL)

16

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.502 ppb155ND - 2.16 ppb
20190.155 ppb131ND - 2.01 ppb
20200.1000 ppb141ND - 1.40 ppb
20210.113 ppb151ND - 1.70 ppb
20220.403 ppb154ND - 1.90 ppb
20230.399 ppb164ND - 2.33 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
2018-02-20JH1801171ND
2018-02-20JH1801170ND
2018-02-20JH1801171-72ND
2018-02-20JH1801166ND
2018-02-20JH1801172ND
2018-02-20JH1801168ND
2018-06-18JH1804230ND
2018-06-18JH1804227ND
2018-06-18JH18042341.55 ppb
2018-06-18JH18042321.80 ppb
2018-06-18JH1804228ND
2018-12-11JH1809750-HAA51.36 ppb
2018-12-11JH1809749-HAA5ND
2018-12-11JH18097482.16 ppb
2018-12-11JH1809751-HAA50.660 ppb
2019-03-11JH1901459ND
2019-03-11JH1901457ND
2019-03-11JH1901461ND
2019-03-11JH19014552.01 ppb
2019-06-12JH1903674-HAAND
2019-06-12JH1903676-DBPND
2019-06-12JH1903675-HAAND
2019-06-12JH1903673-HAAND
2019-06-12JH1903676ND
2019-12-09JH1908729ND
2019-12-09JH1908728ND
2019-12-09JH1908730ND
2019-12-09JH1908731ND
2020-06-08JH2003809ND
2020-06-08JH2003808ND
2020-06-08JH2003807ND
2020-06-08JH2003806ND
2020-09-14JH2006970ND
2020-09-14JH2006972ND
2020-09-14JH2006974ND
2020-09-14JH20069761.40 ppb
2020-09-14JH2006971ND
2020-09-14JH2006973ND
2020-12-14JH2009692ND
2020-12-14JH2009690ND
2020-12-14JH2009688ND
2020-12-14JH2009694ND
2021-03-16JH2101999ND
2021-03-16JH2101997ND
2021-03-16JH2101995ND
2021-03-16JH2101993ND
2021-06-14JH2104545ND
2021-06-14JH2104547ND
2021-06-14JH2104543ND
2021-09-20JH21085711.70 ppb
2021-09-20JH2108565ND
2021-09-20JH2108567ND
2021-09-20JH2108568ND
2021-12-06JH2110944ND
2021-12-06JH2110943ND
2021-12-06JH2110941ND
2021-12-06JH2110939ND
2022-03-07JH2201783ND
2022-03-07JH2201779ND
2022-03-07JH2201781ND
2022-03-07JH22017771.30 ppb
2022-06-14JH2204566ND
2022-06-14JH2204564ND
2022-06-14JH2204562ND
2022-09-21JH2208310ND
2022-09-21JH22083041.65 ppb
2022-09-21JH22083061.20 ppb
2022-09-21JH2208308ND
2022-12-13JH22106341.90 ppb
2022-12-13JH2210640ND
2022-12-13JH2210638ND
2022-12-13JH2210636ND
2023-03-21JH2302115ND
2023-03-21JH2302119ND
2023-03-21JH2302113ND
2023-03-21JH2302117ND
2023-06-06JH23041891.50 ppb
2023-06-06JH23041911.05 ppb
2023-06-06JH2304193ND
2023-06-06JH2304195ND
2023-09-12JH2307822ND
2023-09-12JH2307824ND
2023-09-12JH23078182.33 ppb
2023-09-12JH2307820ND
2023-12-12JH23108251.51 ppb
2023-12-12JH2310827ND
2023-12-12JH2310829ND
2023-12-12JH2310823ND