Bromodichloromethane
Belton
Bromodichloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromodichloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | 0.648 ppb | 16 | 13 | ND - 1.12 ppb |
| 2015 | 0.889 ppb | 10 | 8 | ND - 1.94 ppb |
| 2016 | 0.876 ppb | 8 | 8 | 0.610 ppb - 1.41 ppb |
| 2017 | 0.809 ppb | 8 | 8 | 0.670 ppb - 1.06 ppb |
| 2018 | 0.904 ppb | 8 | 8 | 0.630 ppb - 1.54 ppb |
| 2019 | 1.24 ppb | 8 | 8 | 0.800 ppb - 1.56 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.06 ppb
The EWG Health Guideline of 0.06 ppb for bromodichloromethane was proposed in 2018 by the California Office of Environmental Health Hazard Assessment as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-01-14 | AC16582 | ND |
| 2014-01-14 | AC16583 | 0.550 ppb |
| 2014-01-14 | AC16584 | ND |
| 2014-01-14 | AC16581 | ND |
| 2014-04-07 | AC21488 | 0.910 ppb |
| 2014-04-07 | AC21489 | 0.810 ppb |
| 2014-04-07 | AC21490 | 0.710 ppb |
| 2014-04-07 | AC21491 | 0.730 ppb |
| 2014-07-22 | AC30474 | 0.920 ppb |
| 2014-07-22 | AC30476 | 0.940 ppb |
| 2014-07-22 | AC30475 | 1.000 ppb |
| 2014-07-22 | AC30473 | 1.12 ppb |
| 2014-10-14 | AC37562 | 0.640 ppb |
| 2014-10-14 | AC37563 | 0.750 ppb |
| 2014-10-14 | AC37564 | 0.640 ppb |
| 2014-10-14 | AC37565 | 0.640 ppb |
| 2015-01-16 | AC40288 | 0.560 ppb |
| 2015-01-16 | AC40286 | 0.540 ppb |
| 2015-01-16 | AC40287 | ND |
| 2015-01-16 | AC40289 | ND |
| 2015-04-20 | AC44977 | 0.800 ppb |
| 2015-04-20 | AC44976 | 0.820 ppb |
| 2015-07-14 | AC54171 | 1.94 ppb |
| 2015-07-14 | AC54172 | 1.93 ppb |
| 2015-10-21 | AC61134 | 1.12 ppb |
| 2015-10-21 | AC61135 | 1.18 ppb |
| 2016-01-12 | AC64936 | 0.620 ppb |
| 2016-01-12 | AC64937 | 0.610 ppb |
| 2016-04-25 | AC69296 | 0.820 ppb |
| 2016-04-25 | AC69297 | 0.760 ppb |
| 2016-07-12 | AC79641 | 1.32 ppb |
| 2016-07-12 | AC79640 | 1.41 ppb |
| 2016-10-18 | AC86207 | 0.760 ppb |
| 2016-10-18 | AC86206 | 0.710 ppb |
| 2017-01-09 | AC89017 | 0.670 ppb |
| 2017-01-09 | AC89018 | 0.690 ppb |
| 2017-04-11 | AC94384 | 0.700 ppb |
| 2017-04-11 | AC94385 | 0.680 ppb |
| 2017-07-11 | AD01286 | 1.05 ppb |
| 2017-07-11 | AD01287 | 1.06 ppb |
| 2017-10-17 | AD07823 | 0.780 ppb |
| 2017-10-17 | AD07822 | 0.840 ppb |
| 2018-01-16 | AD11266 | 0.630 ppb |
| 2018-01-16 | AD11267 | 0.640 ppb |
| 2018-04-16 | AD17936 | 0.880 ppb |
| 2018-04-16 | AD17937 | 0.830 ppb |
| 2018-07-16 | AD29068 | 1.30 ppb |
| 2018-07-16 | AD29067 | 1.54 ppb |
| 2018-10-15 | AD34348 | 0.710 ppb |
| 2018-10-15 | AD34349 | 0.700 ppb |
| 2019-01-15 | AD37659 | 0.800 ppb |
| 2019-01-15 | AD37660 | 0.920 ppb |
| 2019-04-08 | AD46079 | 1.18 ppb |
| 2019-04-08 | AD46080 | 1.21 ppb |
| 2019-07-09 | AD51682 | 1.41 ppb |
| 2019-07-09 | AD51683 | 1.31 ppb |
| 2019-10-15 | AD56661 | 1.54 ppb |
| 2019-10-15 | AD56662 | 1.56 ppb |