Tribromoacetic acid
Howard County Cons Public Water Supply District 1
Tribromoacetic 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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | 2.30 ppb | 2 | 2 | 2.23 ppb - 2.36 ppb |
2015 | ND | 2 | 0 | ND |
2016 | 1.26 ppb | 2 | 1 | ND - 2.52 ppb |
2017 | 1.35 ppb | 6 | 2 | ND - 5.00 ppb |
2018 | 2.16 ppb | 7 | 5 | ND - 3.70 ppb |
2019 | 0.894 ppb | 14 | 3 | ND - 5.89 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 tribromoacetic 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 |
---|---|---|
2014-06-30 | AC28709 | 2.36 ppb |
2014-06-30 | AC28708 | 2.23 ppb |
2015-07-10 | AC55732 | ND |
2015-07-10 | AC55733 | ND |
2016-06-27 | AC74929 | ND |
2016-06-27 | AC74930 | 2.52 ppb |
2017-06-27 | AC98527 | 5.00 ppb |
2017-06-27 | AC98528 | ND |
2017-09-25 | AD07508 | 3.11 ppb |
2017-09-25 | AD07509 | ND |
2017-12-18 | AD10653 | ND |
2017-12-18 | AD10654 | ND |
2018-03-21 | AD16531 | ND |
2018-03-21 | AD16532 | ND |
2018-06-27 | AD27344 | 3.20 ppb |
2018-06-27 | AD27343 | 3.70 ppb |
2018-10-01 | AD34141 | 3.09 ppb |
2018-10-01 | AD32966 | 2.33 ppb |
2018-10-01 | AD32965 | 2.82 ppb |
2019-01-08 | AD38619 | ND |
2019-01-08 | AD38620 | ND |
2019-03-25 | AD40556 | ND |
2019-03-25 | AD40557 | ND |
2019-03-25 | AD40558 | 3.30 ppb |
2019-06-17 | AD49158 | ND |
2019-06-17 | AD49159 | ND |
2019-06-17 | AD49157 | 5.89 ppb |
2019-09-16 | AD55240 | ND |
2019-09-16 | AD55242 | ND |
2019-09-16 | AD55241 | ND |
2019-12-16 | AD59145 | ND |
2019-12-16 | AD59146 | 3.32 ppb |
2019-12-16 | AD59147 | ND |