Haloacetic acids (HAA5)
Dewitt WDS - South
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 18.4 ppb | 8 | 8 | 10.00 ppb - 32.0 ppb |
| 2015 | 12.7 ppb | 8 | 8 | 1.90 ppb - 26.0 ppb |
| 2016 | 11.0 ppb | 8 | 8 | 5.00 ppb - 17.0 ppb |
| 2017 | 13.6 ppb | 6 | 6 | 7.20 ppb - 22.0 ppb |
| 2018 | 16.1 ppb | 8 | 8 | 3.30 ppb - 31.0 ppb |
| 2019 | 13.1 ppb | 8 | 8 | 8.00 ppb - 22.0 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 |
|---|---|---|
| 2014-02-13 | 1Q2014 CORONATIO | 32.0 ppb |
| 2014-02-13 | 1Q2014 JD EDINGE | 17.0 ppb |
| 2014-05-13 | 2Q2014 CORONATIO | 27.0 ppb |
| 2014-05-13 | 2Q2014 JD EDINGE | 20.0 ppb |
| 2014-08-13 | 3Q2014 JD EDINGE | 12.9 ppb |
| 2014-08-13 | 3Q2014 CORONATIO | 15.1 ppb |
| 2014-11-13 | 4Q2014 CORONATIO | 10.00 ppb |
| 2014-11-13 | 4Q2014 JD EDINGE | 13.2 ppb |
| 2015-02-11 | 1Q2015 CORONATIO | 1.90 ppb |
| 2015-02-11 | 1Q2015 JD EDINGE | 13.6 ppb |
| 2015-05-14 | 2Q2015 JD EDINGE | 20.6 ppb |
| 2015-05-14 | 2Q2015 CORONATIO | 26.0 ppb |
| 2015-08-13 | 3Q2015 JD EDINGE | 15.0 ppb |
| 2015-08-13 | 3Q2015 CORONATIO | 6.30 ppb |
| 2015-11-09 | 4Q2015 CORONATIO | 5.80 ppb |
| 2015-11-09 | 4Q2015 JD EDINGE | 12.0 ppb |
| 2016-02-12 | 1Q2016 JD EDINGE | 14.8 ppb |
| 2016-02-12 | 1Q2016 CORONATIO | 10.00 ppb |
| 2016-05-17 | 2Q2016 JD EDINGE | 12.0 ppb |
| 2016-05-17 | 2Q2016 CORONATIO | 11.2 ppb |
| 2016-08-10 | 3Q2016 CORONATIO | 17.0 ppb |
| 2016-08-10 | 3Q2016 JD EDINGE | 9.00 ppb |
| 2016-11-08 | 4Q2016 CORONATIO | 5.00 ppb |
| 2016-11-08 | 4Q2016 JD EDINGE | 9.10 ppb |
| 2017-05-10 | 2Q2017 JD EDINGE | 22.0 ppb |
| 2017-05-10 | 2Q2017 CORONATIO | 15.9 ppb |
| 2017-08-09 | 3Q2017 JD EDINGE | 11.3 ppb |
| 2017-08-09 | 3Q2017 CORONATIO | 15.3 ppb |
| 2017-11-07 | 4Q2017 CORONATIO | 7.20 ppb |
| 2017-11-07 | 4Q2017 JD EDINGE | 10.00 ppb |
| 2018-02-15 | 1Q2018 EDINGER D | 18.0 ppb |
| 2018-02-15 | 1Q2018 CORONATIO | 31.0 ppb |
| 2018-05-10 | 2Q2018 CORONATIO | 27.0 ppb |
| 2018-05-10 | 2Q2018 JD EDINGE | 16.0 ppb |
| 2018-08-16 | 3Q2018 JD EDINGE | 11.1 ppb |
| 2018-08-16 | 3Q2018 CORONATIO | 17.0 ppb |
| 2018-11-07 | 4Q2018 JD EDINGE | 5.30 ppb |
| 2018-11-17 | 4Q2018 CORONATIO | 3.30 ppb |
| 2019-02-14 | 1Q2019 CORONATIO | 14.0 ppb |
| 2019-02-14 | 1Q2019 JD EDINGE | 16.2 ppb |
| 2019-05-10 | 2Q2019 CORONATIO | 12.2 ppb |
| 2019-05-10 | 2Q2019 JD EDINGE | 11.9 ppb |
| 2019-08-13 | 3Q2019 JD EDINGE | 8.00 ppb |
| 2019-08-13 | 3Q2019 CORONATIO | 22.0 ppb |
| 2019-11-06 | 4Q2019 JD EDINGE | 10.5 ppb |
| 2019-11-06 | 4Q2019 CORONATIO | 9.90 ppb |