Dibromochloromethane
Highline Water District
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | 1.19 ppb | 28 | 26 | ND - 1.90 ppb |
2015 | 1.54 ppb | 33 | 33 | 0.600 ppb - 3.10 ppb |
2016 | 1.16 ppb | 33 | 29 | ND - 2.05 ppb |
2017 | 0.872 ppb | 32 | 24 | ND - 2.00 ppb |
2018 | 0.0773 ppb | 33 | 3 | ND - 1.18 ppb |
2019 | 0.914 ppb | 33 | 19 | ND - 3.04 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 | Lab ID | Result |
---|---|---|
2014-03-04 | 03967 | 1.70 ppb |
2014-03-04 | 03966 | 1.20 ppb |
2014-03-04 | 03968 | 1.40 ppb |
2014-03-04 | 03969 | 1.60 ppb |
2014-06-06 | 10266 | 1.40 ppb |
2014-06-06 | 10270 | 1.90 ppb |
2014-06-06 | 10267 | 0.900 ppb |
2014-06-06 | 10273 | 0.900 ppb |
2014-06-06 | 10272 | 1.80 ppb |
2014-06-06 | 10271 | 1.50 ppb |
2014-06-06 | 10268 | 1.50 ppb |
2014-06-06 | 10269 | 1.50 ppb |
2014-09-04 | 16268 | 1.30 ppb |
2014-09-04 | 16269 | 1.50 ppb |
2014-09-04 | 16266 | 0.800 ppb |
2014-09-04 | 16267 | 1.50 ppb |
2014-09-04 | 16270 | 1.70 ppb |
2014-09-04 | 16265 | 1.20 ppb |
2014-09-04 | 16272 | 1.30 ppb |
2014-09-04 | 16271 | 1.40 ppb |
2014-12-04 | 01143 | 1.000 ppb |
2014-12-04 | 01141 | 0.900 ppb |
2014-12-04 | 01145 | 1.000 ppb |
2014-12-04 | 01147 | ND |
2014-12-04 | 01142 | 0.700 ppb |
2014-12-04 | 01144 | 0.800 ppb |
2014-12-04 | 01148 | ND |
2014-12-04 | 01146 | 0.800 ppb |
2015-03-04 | 59605 | 2.46 ppb |
2015-03-04 | 59607 | 2.44 ppb |
2015-03-04 | 59604 | 2.33 ppb |
2015-03-04 | 59601 | 1.97 ppb |
2015-03-04 | 59603 | 2.98 ppb |
2015-03-04 | 59608 | 2.49 ppb |
2015-03-04 | 59606 | 1.39 ppb |
2015-03-04 | 59602 | 1.22 ppb |
2015-03-30 | 74852 | 3.10 ppb |
2015-06-03 | 30508 | 1.31 ppb |
2015-06-03 | 30507 | 1.63 ppb |
2015-06-03 | 30506 | 1.02 ppb |
2015-06-03 | 30505 | 2.01 ppb |
2015-06-03 | 30504 | 1.18 ppb |
2015-06-03 | 30503 | 0.600 ppb |
2015-06-03 | 30502 | 1.06 ppb |
2015-06-03 | 30501 | 0.980 ppb |
2015-09-10 | 95808 | 1.32 ppb |
2015-09-10 | 95807 | 1.73 ppb |
2015-09-10 | 95806 | 1.11 ppb |
2015-09-10 | 95805 | 1.91 ppb |
2015-09-10 | 95804 | 1.37 ppb |
2015-09-10 | 95803 | 1.67 ppb |
2015-09-10 | 95802 | 1.12 ppb |
2015-09-10 | 95801 | 1.31 ppb |
2015-12-01 | 63908 | 0.750 ppb |
2015-12-01 | 63907 | 1.43 ppb |
2015-12-01 | 63906 | 0.780 ppb |
2015-12-01 | 63905 | 1.77 ppb |
2015-12-01 | 63904 | 0.650 ppb |
2015-12-01 | 63903 | 1.28 ppb |
2015-12-01 | 63902 | 0.690 ppb |
2015-12-01 | 63901 | 1.65 ppb |
2016-03-09 | 1.69 ppb | |
2016-03-09 | 1.42 ppb | |
2016-03-09 | 1.16 ppb | |
2016-03-09 | 1.51 ppb | |
2016-03-09 | 0.920 ppb | |
2016-03-09 | 0.840 ppb | |
2016-03-09 | 1.63 ppb | |
2016-03-09 | 1.23 ppb | |
2016-05-27 | 0.700 ppb | |
2016-06-08 | ND | |
2016-06-08 | 0.650 ppb | |
2016-06-08 | 1.22 ppb | |
2016-06-08 | ND | |
2016-06-08 | ND | |
2016-06-08 | ND | |
2016-06-08 | 0.650 ppb | |
2016-06-08 | 0.520 ppb | |
2016-09-08 | 1.81 ppb | |
2016-09-08 | 1.60 ppb | |
2016-09-08 | 1.37 ppb | |
2016-09-08 | 1.55 ppb | |
2016-09-08 | 1.01 ppb | |
2016-09-08 | 1.29 ppb | |
2016-09-08 | 1.49 ppb | |
2016-09-08 | 1.15 ppb | |
2016-12-07 | 1.21 ppb | |
2016-12-07 | 1.99 ppb | |
2016-12-07 | 1.57 ppb | |
2016-12-07 | 1.57 ppb | |
2016-12-07 | 2.05 ppb | |
2016-12-07 | 1.54 ppb | |
2016-12-07 | 1.26 ppb | |
2016-12-07 | 1.76 ppb | |
2017-03-07 | 1.24 ppb | |
2017-03-07 | 1.62 ppb | |
2017-03-07 | 1.30 ppb | |
2017-03-07 | 2.00 ppb | |
2017-03-07 | 1.73 ppb | |
2017-03-07 | 1.69 ppb | |
2017-03-07 | 1.31 ppb | |
2017-03-07 | 1.21 ppb | |
2017-06-07 | 1.12 ppb | |
2017-06-07 | 1.73 ppb | |
2017-06-07 | 0.740 ppb | |
2017-06-07 | 1.20 ppb | |
2017-06-07 | 1.08 ppb | |
2017-06-07 | 1.54 ppb | |
2017-06-07 | 1.45 ppb | |
2017-06-07 | 1.12 ppb | |
2017-09-06 | 0.760 ppb | |
2017-09-06 | ND | |
2017-09-06 | 0.850 ppb | |
2017-09-06 | 0.830 ppb | |
2017-09-06 | 0.700 ppb | |
2017-09-06 | 0.770 ppb | |
2017-09-06 | 0.710 ppb | |
2017-09-06 | 0.560 ppb | |
2017-12-07 | ND | |
2017-12-07 | ND | |
2017-12-07 | ND | |
2017-12-07 | ND | |
2017-12-07 | ND | |
2017-12-07 | ND | |
2017-12-07 | ND | |
2017-12-07 | 0.650 ppb | |
2018-03-06 | ND | |
2018-03-06 | ND | |
2018-03-06 | ND | |
2018-03-06 | ND | |
2018-03-06 | ND | |
2018-03-06 | ND | |
2018-03-06 | ND | |
2018-03-06 | 1.18 ppb | |
2018-06-06 | ND | |
2018-06-06 | ND | |
2018-06-06 | ND | |
2018-06-06 | ND | |
2018-06-06 | ND | |
2018-06-06 | ND | |
2018-06-06 | ND | |
2018-06-06 | ND | |
2018-09-05 | 0.760 ppb | |
2018-09-05 | ND | |
2018-09-05 | ND | |
2018-09-05 | ND | |
2018-09-05 | ND | |
2018-09-05 | ND | |
2018-09-05 | ND | |
2018-09-05 | 0.610 ppb | |
2018-10-04 | ND | |
2018-12-05 | ND | |
2018-12-05 | ND | |
2018-12-05 | ND | |
2018-12-05 | ND | |
2018-12-05 | ND | |
2018-12-05 | ND | |
2018-12-05 | ND | |
2018-12-05 | ND | |
2019-03-06 | ND | |
2019-03-06 | ND | |
2019-03-06 | ND | |
2019-03-06 | ND | |
2019-03-06 | ND | |
2019-03-06 | ND | |
2019-03-06 | ND | |
2019-03-06 | 1.29 ppb | |
2019-06-05 | ND | |
2019-06-05 | ND | |
2019-06-05 | ND | |
2019-06-05 | ND | |
2019-06-05 | ND | |
2019-06-05 | ND | |
2019-06-05 | ND | |
2019-06-05 | 0.936 ppb | |
2019-09-05 | 1.78 ppb | |
2019-09-05 | 1.36 ppb | |
2019-09-05 | 2.63 ppb | |
2019-09-05 | 2.75 ppb | |
2019-09-05 | 1.38 ppb | |
2019-09-05 | 1.22 ppb | |
2019-09-05 | 3.04 ppb | |
2019-09-05 | 2.30 ppb | |
2019-09-18 | 0.960 ppb | |
2019-12-04 | 1.12 ppb | |
2019-12-04 | 1.000 ppb | |
2019-12-04 | 1.19 ppb | |
2019-12-04 | 1.01 ppb | |
2019-12-04 | 1.42 ppb | |
2019-12-04 | 1.37 ppb | |
2019-12-04 | 1.10 ppb | |
2019-12-04 | 2.29 ppb |