Bromodichloroacetic acid
Jefferson County PWSD 10
NOTE: Jefferson County PWSD 10 purchases water from Missouri American St. Louis County & St. Charles County which is required to test for bromodichloroacetic acid. Sample information shown below was taken by Missouri American St. Louis County & St. Charles County.
Bromodichloroacetic acid is formed when chlorine or other disinfectants are used to treat drinking water. Bromodichloroacetic acid and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2012 | 1.52 ppb | 6 | 6 | 0.630 ppb - 3.21 ppb |
| 2013 | 0.319 ppb | 8 | 3 | ND - 0.930 ppb |
| 2014 | 1.56 ppb | 8 | 8 | 1.10 ppb - 2.09 ppb |
| 2015 | 1.00 ppb | 8 | 7 | ND - 1.96 ppb |
| 2016 | ND | 8 | 0 | ND |
| 2017 | 0.160 ppb | 8 | 2 | ND - 0.660 ppb |
ppb = parts per billion
All test results
NOTE: Jefferson County PWSD 10 purchases water from Missouri American St. Louis County & St. Charles County which is required to test for bromodichloroacetic acid. Sample information shown below was taken by Missouri American St. Louis County & St. Charles County.
| Date | Lab ID | Result |
|---|---|---|
| 2014-08-19 | AC30934 | 2.02 ppb |
| 2014-08-19 | AC30948 | ND |
| 2014-08-19 | AC30947 | 1.51 ppb |
| 2014-08-19 | AC30946 | ND |
| 2014-08-19 | AC30945 | 1.42 ppb |
| 2014-08-19 | AC30944 | 1.65 ppb |
| 2014-08-19 | AC30943 | ND |
| 2014-08-19 | AC30942 | 1.10 ppb |
| 2014-08-19 | AC30941 | ND |
| 2014-08-19 | AC30940 | 1.67 ppb |
| 2014-08-19 | AC30939 | 0.790 ppb |
| 2014-08-19 | AC30938 | 2.04 ppb |
| 2014-08-19 | AC30937 | 2.04 ppb |
| 2014-08-19 | AC30936 | 0.840 ppb |
| 2014-08-19 | AC30935 | 0.910 ppb |
| 2014-08-19 | AC30949 | ND |