Dibromoacetic acid
Stoughton Waterworks
Dibromoacetic acid, one of the group of five haloacetic acids regulated by federal standards, is formed when chlorine or other disinfectants are used to treat drinking water. Haloacetic acids and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.
12
Samples
0
Samples exceeding legal limit (MCL)
10
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | 0.165 ppb | 2 | 1 | ND - 0.330 ppb |
| 2015 | 0.365 ppb | 2 | 2 | 0.180 ppb - 0.550 ppb |
| 2016 | 0.356 ppb | 2 | 2 | 0.0720 ppb - 0.640 ppb |
| 2017 | 0.385 ppb | 2 | 2 | 0.130 ppb - 0.640 ppb |
| 2018 | 0.670 ppb | 2 | 2 | 0.340 ppb - 1.000 ppb |
| 2019 | 0.265 ppb | 2 | 1 | ND - 0.530 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.04 ppb
The EWG Health Guideline of 0.04 ppb for dibromoacetic acid was defined in a peer-reviewed scientific study by EWG and represents a on-in-a-million lifetime cancer risk level. This health guideline protects against cancer.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-07-23 | 805340 | 0.330 ppb |
| 2014-08-11 | 809428 | ND |
| 2015-08-19 | 878028 | 0.180 ppb |
| 2015-08-19 | 878029 | 0.550 ppb |
| 2016-07-27 | 935783 | 0.0720 ppb |
| 2016-07-27 | 935782 | 0.640 ppb |
| 2017-08-02 | 1008452 | 0.130 ppb |
| 2017-08-02 | 1008451 | 0.640 ppb |
| 2018-07-16 | 1067520 | 0.340 ppb |
| 2018-07-16 | 1067519 | 1.000 ppb |
| 2019-07-09 | 1133098 | ND |
| 2019-07-09 | 1133097 | 0.530 ppb |