Chlorodibromoacetic acid
Carroll County Public Water Supply District 1
Chlorodibromoacetic acid is formed when chlorine or other disinfectants are used to treat drinking water. Disinfection byproducts increase the risk of cancer and may cause problems during pregnancy.
26
Samples
0
Samples exceeding legal limit (MCL)
11
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | ND | 2 | 0 | ND |
| 2015 | 0.905 ppb | 4 | 1 | ND - 3.62 ppb |
| 2016 | 1.69 ppb | 8 | 5 | ND - 3.20 ppb |
| 2017 | 0.989 ppb | 8 | 3 | ND - 3.63 ppb |
| 2018 | 2.19 ppb | 2 | 2 | 2.05 ppb - 2.32 ppb |
| 2019 | ND | 2 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.02 ppb
The EWG Health Guideline of 0.02 ppb for chlorodibromoacetic 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 |
|---|---|---|
| 2014-09-18 | AC35665 | ND |
| 2014-09-18 | AC35664 | ND |
| 2015-10-05 | AC60953 | ND |
| 2015-10-05 | AC60954 | ND |
| 2015-12-22 | AC63978 | 3.62 ppb |
| 2015-12-22 | AC63977 | ND |
| 2016-03-29 | AC67681 | 2.74 ppb |
| 2016-03-29 | AC67680 | 3.20 ppb |
| 2016-06-28 | AC79465 | 2.83 ppb |
| 2016-06-28 | AC79466 | 3.19 ppb |
| 2016-09-15 | AC83911 | ND |
| 2016-09-15 | AC83910 | ND |
| 2016-12-30 | AC88493 | 1.57 ppb |
| 2016-12-30 | AC88492 | ND |
| 2017-04-05 | AC92179 | ND |
| 2017-04-05 | AC92178 | ND |
| 2017-06-28 | AC98524 | ND |
| 2017-06-28 | AC98523 | ND |
| 2017-09-28 | AD06496 | 3.63 ppb |
| 2017-09-28 | AD06497 | 2.59 ppb |
| 2017-12-28 | AD10649 | 1.69 ppb |
| 2017-12-28 | AD10650 | ND |
| 2018-09-27 | AD32961 | 2.32 ppb |
| 2018-09-27 | AD32962 | 2.05 ppb |
| 2019-11-22 | AD55236 | ND |
| 2019-11-22 | AD55237 | ND |