Chlorodibromoacetic acid
Daviess County Public Water Supply District 2
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.
42
Samples
0
Samples exceeding legal limit (MCL)
25
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 0.989 ppb | 10 | 4 | ND - 3.25 ppb |
| 2015 | 4.54 ppb | 8 | 2 | ND - 20.7 ppb |
| 2016 | 3.00 ppb | 8 | 7 | ND - 6.12 ppb |
| 2017 | 1.11 ppb | 8 | 4 | ND - 3.21 ppb |
| 2018 | 2.99 ppb | 6 | 6 | 1.13 ppb - 6.25 ppb |
| 2019 | 1.15 ppb | 2 | 2 | 1.10 ppb - 1.20 ppb |
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 |
|---|---|---|
| 2014-03-19 | AC16682 | ND |
| 2014-03-19 | AC16681 | ND |
| 2014-03-21 | AC16683 | 3.25 ppb |
| 2014-03-21 | AC16684 | 3.18 ppb |
| 2014-06-11 | AC28987 | ND |
| 2014-06-11 | AC28988 | 2.03 ppb |
| 2014-06-11 | AC28989 | 1.43 ppb |
| 2014-09-09 | AC30615 | ND |
| 2014-10-21 | AC37643 | ND |
| 2014-10-21 | AC37644 | ND |
| 2015-03-09 | AC40368 | ND |
| 2015-03-09 | AC40367 | ND |
| 2015-04-26 | AC45038 | ND |
| 2015-04-26 | AC45037 | ND |
| 2015-07-20 | AC54271 | ND |
| 2015-07-20 | AC54270 | ND |
| 2015-10-21 | AC61199 | 15.6 ppb |
| 2015-10-21 | AC61200 | 20.7 ppb |
| 2016-01-25 | AC65006 | 2.06 ppb |
| 2016-01-25 | AC65007 | 6.12 ppb |
| 2016-05-16 | AC69366 | ND |
| 2016-05-16 | AC69365 | 3.44 ppb |
| 2016-08-22 | AC79695 | 3.64 ppb |
| 2016-08-22 | AC79694 | 3.06 ppb |
| 2016-11-16 | AC86273 | 2.39 ppb |
| 2016-11-16 | AC86274 | 3.28 ppb |
| 2017-02-06 | AC89084 | 3.21 ppb |
| 2017-02-06 | AC89083 | 2.16 ppb |
| 2017-04-27 | AC94445 | ND |
| 2017-04-27 | AC94446 | ND |
| 2017-09-05 | AD01383 | ND |
| 2017-09-05 | AD01382 | 1.20 ppb |
| 2017-11-14 | AD07882 | ND |
| 2017-11-14 | AD07881 | 2.29 ppb |
| 2018-03-07 | AD11323 | 3.70 ppb |
| 2018-03-07 | AD11324 | 6.25 ppb |
| 2018-08-07 | AD17996 | 1.13 ppb |
| 2018-08-07 | AD17997 | 2.98 ppb |
| 2018-08-07 | AD29159 | 1.13 ppb |
| 2018-08-07 | AD29160 | 2.74 ppb |
| 2019-09-16 | AD51777 | 1.20 ppb |
| 2019-09-16 | AD51778 | 1.10 ppb |