Dibromoacetic acid
Chester, Town of
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)
9
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 0.397 ppb | 3 | 2 | ND - 0.600 ppb |
| 2015 | 0.340 ppb | 3 | 3 | 0.290 ppb - 0.430 ppb |
| 2016 | 0.380 ppb | 3 | 3 | 0.260 ppb - 0.590 ppb |
| 2017 | 0.290 ppb | 1 | 1 | 0.290 ppb |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
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 |
|---|---|---|
| 2014-01-15 | B14011089-001B | ND |
| 2014-04-02 | B14040353-001B | 0.600 ppb |
| 2014-07-07 | B14070630-001B | 0.590 ppb |
| 2015-07-07 | B15070791-001B | 0.430 ppb |
| 2015-10-13 | B15101112-003B | 0.290 ppb |
| 2015-10-15 | B15101456-001B | 0.300 ppb |
| 2016-01-11 | B16010647-004B | 0.260 ppb |
| 2016-04-04 | B16040255-004B | 0.290 ppb |
| 2016-07-12 | B16070862-004B | 0.590 ppb |
| 2017-07-12 | B17070994-001B | 0.290 ppb |
| 2018-07-09 | B18070626-001B | ND |
| 2019-07-09 | B19070904-001B | ND |