Dibromoacetic acid
Nashua, 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.
17
Samples
0
Samples exceeding legal limit (MCL)
16
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 0.933 ppb | 3 | 3 | 0.620 ppb - 1.20 ppb |
| 2015 | 0.650 ppb | 3 | 3 | 0.290 ppb - 1.10 ppb |
| 2016 | 0.718 ppb | 4 | 4 | 0.280 ppb - 1.10 ppb |
| 2017 | 0.630 ppb | 2 | 2 | 0.360 ppb - 0.900 ppb |
| 2018 | 0.903 ppb | 4 | 4 | 0.470 ppb - 1.20 ppb |
| 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 |
|---|---|---|
| 2014-02-10 | B14020561-001B | 1.20 ppb |
| 2014-07-01 | B14070263-001B | 0.980 ppb |
| 2014-12-15 | B14121408-001B | 0.620 ppb |
| 2015-05-11 | B15050914-001B | 1.10 ppb |
| 2015-08-10 | B15080916-001B | 0.290 ppb |
| 2015-11-02 | B15110223-001B | 0.560 ppb |
| 2016-02-01 | B16020177-001B | 0.280 ppb |
| 2016-05-09 | B16050781-001B | 1.10 ppb |
| 2016-08-29 | B16082835-001B | 1.10 ppb |
| 2016-11-28 | B16112142-001B | 0.390 ppb |
| 2017-04-17 | B17041434-001B | 0.900 ppb |
| 2017-11-08 | B17110740-001B | 0.360 ppb |
| 2018-02-07 | B18020651-001B | 0.470 ppb |
| 2018-05-07 | B18050770-001B | 1.20 ppb |
| 2018-08-29 | B18083037-001B | 0.840 ppb |
| 2018-12-26 | B18121931-001B | 1.10 ppb |
| 2019-04-08 | B19040736-001B | ND |