Dibromochloromethane
Manitou Springs, City of
Dibromochloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Dibromochloromethane 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 |
|---|---|---|---|---|
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | 0.188 ppb | 6 | 2 | ND - 0.620 ppb |
| 2016 | 0.478 ppb | 9 | 6 | ND - 0.950 ppb |
| 2017 | 0.824 ppb | 9 | 8 | ND - 1.60 ppb |
| 2018 | 0.529 ppb | 11 | 7 | ND - 1.20 ppb |
| 2019 | 0.798 ppb | 9 | 8 | ND - 1.20 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.1 ppb
The EWG Health Guideline of 0.1 ppb for dibromochloromethane 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 | Result |
|---|---|
| 2015-05-28 | ND |
| 2015-05-28 | ND |
| 2015-08-12 | ND |
| 2015-08-12 | 0.510 ppb |
| 2015-11-23 | ND |
| 2015-11-23 | 0.620 ppb |
| 2016-02-17 | 0.720 ppb |
| 2016-02-17 | ND |
| 2016-05-17 | 0.950 ppb |
| 2016-05-17 | ND |
| 2016-08-02 | 0.540 ppb |
| 2016-08-02 | 0.720 ppb |
| 2016-08-02 | 0.530 ppb |
| 2016-11-16 | 0.840 ppb |
| 2016-11-16 | ND |
| 2017-02-07 | 1.60 ppb |
| 2017-02-07 | 0.700 ppb |
| 2017-04-13 | 0.560 ppb |
| 2017-05-26 | 0.800 ppb |
| 2017-05-26 | ND |
| 2017-08-16 | 1.10 ppb |
| 2017-08-16 | 1.10 ppb |
| 2017-11-14 | 0.800 ppb |
| 2017-11-14 | 0.760 ppb |
| 2018-02-21 | 0.720 ppb |
| 2018-02-21 | 0.660 ppb |
| 2018-04-03 | ND |
| 2018-05-15 | 0.810 ppb |
| 2018-05-15 | ND |
| 2018-08-14 | 0.510 ppb |
| 2018-08-14 | ND |
| 2018-10-16 | 1.20 ppb |
| 2018-10-16 | 1.20 ppb |
| 2018-11-27 | 0.720 ppb |
| 2018-11-27 | ND |
| 2019-02-06 | ND |
| 2019-02-06 | 0.780 ppb |
| 2019-02-06 | 0.970 ppb |
| 2019-05-15 | 1.20 ppb |
| 2019-05-15 | 1.10 ppb |
| 2019-08-13 | 0.860 ppb |
| 2019-08-13 | 0.770 ppb |
| 2019-11-05 | 0.700 ppb |
| 2019-11-05 | 0.800 ppb |