Know Your Environment. Protect Your Health.

Haloacetic acids (HAA5)

Cromwell Fire District Water Department

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.

 

96

Samples

0

Samples exceeding legal limit (MCL)

44

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.694 ppb167ND - 2.70 ppb
20190.650 ppb165ND - 2.40 ppb
20201.19 ppb1610ND - 2.90 ppb
20212.15 ppb1611ND - 6.00 ppb
20220.494 ppb165ND - 2.00 ppb
20230.988 ppb166ND - 6.40 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
2018-01-23BZ78968HAA52.00 ppb
2018-01-23BZ78969HAA5ND
2018-01-23BZ78970HAA5ND
2018-01-23BZ78967HAA5ND
2018-04-24CA34727HAA52.70 ppb
2018-04-24CA34728HAA51.10 ppb
2018-04-24CA34729HAA5ND
2018-04-24CA34730HAA5ND
2018-07-24CA964472.00 ppb
2018-07-24CA964481.000 ppb
2018-07-24CA964491.10 ppb
2018-07-24CA96450ND
2018-10-23CB79905ND
2018-10-23CB79907ND
2018-10-23CB799061.20 ppb
2018-10-23CB79904ND
2019-01-22CC32593ND
2019-01-22CC325942.20 ppb
2019-01-22CC32595ND
2019-01-22CC32596ND
2019-04-23CC997002.40 ppb
2019-04-23CC99701ND
2019-04-23CC99702ND
2019-04-23CC99703ND
2019-07-23CD62967ND
2019-07-23CD62969ND
2019-07-23CD629681.000 ppb
2019-07-23CD62966ND
2019-10-22CE452872.40 ppb
2019-10-22CE452882.40 ppb
2019-10-22CE45289ND
2019-10-22CE45286ND
2020-01-28CF22057ND
2020-01-28CF220582.50 ppb
2020-01-28CF220591.10 ppb
2020-01-28CF22060ND
2020-04-28CF79828ND
2020-04-28CF798291.10 ppb
2020-04-28CF798272.60 ppb
2020-04-28CF79826ND
2020-07-28CG42024ND
2020-07-28CG420252.80 ppb
2020-07-28CG420261.30 ppb
2020-07-28CG420271.30 ppb
2020-10-13CG95665ND
2020-10-13CG956661.000 ppb
2020-10-13CG956672.90 ppb
2020-10-13CG956682.50 ppb
2021-01-26CH525923.30 ppb
2021-01-26CH52589ND
2021-01-26CH525901.30 ppb
2021-01-26CH525916.00 ppb
2021-04-27CI161304.70 ppb
2021-04-27CI161313.90 ppb
2021-04-27CI161324.30 ppb
2021-04-27CI161293.80 ppb
2021-07-27CI824801.000 ppb
2021-07-27CI824812.30 ppb
2021-07-27CI824821.10 ppb
2021-07-27CI824832.70 ppb
2021-10-26CJ64983ND
2021-10-26CJ64982ND
2021-10-26CJ64981ND
2021-10-26CJ64980ND
2022-01-25CK22523ND
2022-01-25CK225241.20 ppb
2022-01-25CK22525ND
2022-01-25CK22526ND
2022-04-26CL165251.80 ppb
2022-04-26CL165261.10 ppb
2022-04-26CL165272.00 ppb
2022-04-26CL165281.80 ppb
2022-07-26CL89039ND
2022-07-26CL89037ND
2022-07-26CL89036ND
2022-07-26CL89038ND
2022-10-25CM69531ND
2022-10-25CM69532ND
2022-10-25CM69533ND
2022-10-25CM69534ND
2023-01-24CN289231.000 ppb
2023-01-24CN289241.20 ppb
2023-01-24CN28925ND
2023-01-24CN289261.10 ppb
2023-04-25CN907016.40 ppb
2023-04-25CN90703ND
2023-04-25CN907025.10 ppb
2023-04-25CN90700ND
2023-07-23CO57974ND
2023-07-23CO57975ND
2023-07-23CO57976ND
2023-07-23CO57977ND
2023-10-24CP32123ND
2023-10-24CP321241.000 ppb
2023-10-24CP32125ND
2023-10-24CP32126ND