Know Your Environment. Protect Your Health.

Haloacetic acids (HAA5)

City of Krum

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.

 

48

Samples

0

Samples exceeding legal limit (MCL)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND80ND
2019ND80ND
20200.225 ppb81ND - 1.80 ppb
20210.350 ppb82ND - 1.50 ppb
2022ND80ND
20230.538 ppb83ND - 2.10 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
2018-01-10Q1801331016ND
2018-01-10Q1801331015ND
2018-04-10Q1814607002ND
2018-04-10Q1814607001ND
2018-07-18Q1828860002ND
2018-07-18Q1828860003ND
2018-10-09Q1840450001ND
2018-10-09Q1840450002ND
2019-01-09Q1901597019ND
2019-01-09Q1901597020ND
2019-04-04Q1913696001ND
2019-04-04Q1913696002ND
2019-08-20Q1957155008ND
2019-08-20Q1957155007ND
2019-10-15Q1972688001ND
2019-10-15Q1972688002ND
2020-02-03Q20045010011.80 ppb
2020-02-03Q2004501002ND
2020-05-11Q2018215011ND
2020-05-11Q2018215012ND
2020-08-04Q2030359001ND
2020-08-04Q2030359002ND
2020-10-06Q2039052022ND
2020-10-06Q2039052023ND
2021-01-20Q2101424005ND
2021-01-20Q2101424006ND
2021-05-25Q2113519001ND
2021-05-25Q2113519002ND
2021-08-19Q21225420011.50 ppb
2021-08-19Q21225420021.30 ppb
2021-11-18Q2132474012ND
2021-11-18Q2132474013ND
2022-02-08Q2204313011ND
2022-02-08Q2204313012ND
2022-04-13Q2211388001ND
2022-04-13Q2211388002ND
2022-08-02Q2222011001ND
2022-08-02Q2222011002ND
2022-10-19Q2231852015ND
2022-10-19Q2231852016ND
2023-03-15Q23102400012.10 ppb
2023-03-15Q2310240002ND
2023-06-12Q23220930011.000 ppb
2023-06-12Q23220930021.20 ppb
2023-08-14Q2333742005ND
2023-08-14Q2333742006ND
2023-11-07Q2347808010ND
2023-11-07Q2347808011ND