Bromodichloromethane
City of Columbia
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | 7.12 ppb | 32 | 32 | 3.64 ppb - 10.4 ppb |
2015 | 8.13 ppb | 32 | 32 | 4.69 ppb - 14.4 ppb |
2016 | 7.60 ppb | 40 | 40 | 3.61 ppb - 14.0 ppb |
2017 | 6.87 ppb | 48 | 48 | 3.18 ppb - 9.19 ppb |
2018 | 6.54 ppb | 48 | 48 | 3.15 ppb - 9.34 ppb |
2019 | 6.54 ppb | 48 | 48 | 4.57 ppb - 9.80 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 | 2140115-3 | 5.60 ppb |
2014-01-14 | 2140115-4 | 6.89 ppb |
2014-01-15 | 2140116-10 | 4.94 ppb |
2014-01-15 | 2140116-11 | 3.64 ppb |
2014-01-15 | 2140116-12 | 5.74 ppb |
2014-01-15 | 2140116-13 | 6.65 ppb |
2014-01-15 | 2140116-14 | 5.45 ppb |
2014-01-15 | 2140116-9 | 5.89 ppb |
2014-04-07 | 2140408-10 | 6.45 ppb |
2014-04-07 | 2140408-11 | 6.36 ppb |
2014-04-07 | 2140408-12 | 7.69 ppb |
2014-04-07 | 2140408-13 | 6.44 ppb |
2014-04-07 | 2140408-14 | 6.35 ppb |
2014-04-07 | 2140408-9 | 7.72 ppb |
2014-04-09 | 2140410-3 | 6.98 ppb |
2014-04-09 | 2140410-4 | 6.25 ppb |
2014-07-07 | 2140708-11 | 7.99 ppb |
2014-07-07 | 2140708-12 | 7.99 ppb |
2014-07-07 | 2140708-13 | 5.90 ppb |
2014-07-07 | 2140708-14 | 8.04 ppb |
2014-07-07 | 2140708-15 | 10.4 ppb |
2014-07-07 | 2140708-16 | 9.29 ppb |
2014-07-07 | 2140708-17 | 9.34 ppb |
2014-07-07 | 2140708-18 | 9.13 ppb |
2014-10-13 | 2141014-23 | 8.96 ppb |
2014-10-13 | 2141014-24 | 5.80 ppb |
2014-10-13 | 2141014-25 | 5.77 ppb |
2014-10-13 | 2141014-26 | 7.16 ppb |
2014-10-13 | 2141014-27 | 8.51 ppb |
2014-10-13 | 2141014-28 | 8.16 ppb |
2014-10-13 | 2141014-29 | 8.24 ppb |
2014-10-13 | 2141014-30 | 8.01 ppb |
2015-01-12 | 2150113-11 | 7.03 ppb |
2015-01-12 | 2150113-12 | 6.17 ppb |
2015-01-12 | 2150113-13 | 4.77 ppb |
2015-01-12 | 2150113-14 | 6.23 ppb |
2015-01-12 | 2150113-15 | 7.52 ppb |
2015-01-12 | 2150113-16 | 6.47 ppb |
2015-01-12 | 2150113-17 | 6.91 ppb |
2015-01-12 | 2150113-18 | 7.14 ppb |
2015-04-06 | 2150408-19 | 7.15 ppb |
2015-04-06 | 2150408-20 | 9.68 ppb |
2015-04-06 | 2150408-21 | 7.62 ppb |
2015-04-06 | 2150408-22 | 8.42 ppb |
2015-04-06 | 2150408-23 | 8.60 ppb |
2015-04-06 | 2150408-24 | 7.88 ppb |
2015-04-06 | 2150408-25 | 7.16 ppb |
2015-04-06 | 2150408-26 | 7.26 ppb |
2015-07-13 | 2150717-53 | 14.4 ppb |
2015-07-13 | 2150717-54 | 8.80 ppb |
2015-07-13 | 2150717-55 | 5.00 ppb |
2015-07-13 | 2150717-56 | 8.03 ppb |
2015-07-13 | 2150717-57 | 12.4 ppb |
2015-07-13 | 2150717-58 | 12.0 ppb |
2015-07-13 | 2150717-59 | 14.2 ppb |
2015-07-13 | 2150717-60 | 11.9 ppb |
2015-11-09 | 2151116-11 | 7.89 ppb |
2015-11-09 | 2151116-12 | 4.97 ppb |
2015-11-09 | 2151116-13 | 4.90 ppb |
2015-11-09 | 2151116-14 | 4.69 ppb |
2015-11-09 | 2151116-15 | 8.07 ppb |
2015-11-09 | 2151116-16 | 9.35 ppb |
2015-11-09 | 2151116-17 | 9.23 ppb |
2015-11-09 | 2151116-18 | 8.25 ppb |
2016-01-11 | 2160114-12 | 5.09 ppb |
2016-01-11 | 2160114-14 | 4.79 ppb |
2016-01-11 | 2160114-15 | 9.79 ppb |
2016-01-11 | 2160114-13 | 4.75 ppb |
2016-01-11 | 2160114-11 | 8.46 ppb |
2016-01-12 | 2160114-16 | 9.84 ppb |
2016-01-12 | 2160114-17 | 8.60 ppb |
2016-01-13 | 2160114-18 | 9.50 ppb |
2016-04-12 | 2160413-12 | 5.48 ppb |
2016-04-12 | 2160413-14 | 3.61 ppb |
2016-04-12 | 2160413-15 | 6.04 ppb |
2016-04-12 | 2160413-13 | 9.86 ppb |
2016-04-12 | 2160413-18 | 4.85 ppb |
2016-04-12 | 2160413-11 | 6.58 ppb |
2016-04-12 | 2160413-16 | 4.50 ppb |
2016-04-12 | 2160413-17 | 4.34 ppb |
2016-08-24 | 2160826-26 | 6.88 ppb |
2016-08-24 | 2160826-16 | 6.23 ppb |
2016-08-24 | 2160826-18 | 7.44 ppb |
2016-08-24 | 2160826-19 | 11.0 ppb |
2016-08-24 | 2160826-23 | 7.99 ppb |
2016-08-24 | 2160826-24 | 14.0 ppb |
2016-08-24 | 2160826-25 | 8.43 ppb |
2016-08-24 | 2160826-17 | 7.47 ppb |
2016-08-24 | 2160826-22 | 8.05 ppb |
2016-08-24 | 2160826-15 | 7.36 ppb |
2016-08-24 | 2160826-20 | 7.87 ppb |
2016-08-24 | 2160826-21 | 8.29 ppb |
2016-10-11 | 2161014-26 | 6.41 ppb |
2016-10-11 | 2161014-16 | 8.17 ppb |
2016-10-11 | 2161014-18 | 8.43 ppb |
2016-10-11 | 2161014-19 | 10.6 ppb |
2016-10-11 | 2161014-23 | 5.50 ppb |
2016-10-11 | 2161014-24 | 9.36 ppb |
2016-10-11 | 2161014-25 | 5.24 ppb |
2016-10-11 | 2161014-17 | 5.43 ppb |
2016-10-11 | 2161014-22 | 8.89 ppb |
2016-10-11 | 2161014-15 | 9.78 ppb |
2016-10-11 | 2161014-20 | 9.68 ppb |
2016-10-11 | 2161014-21 | 9.55 ppb |
2017-01-11 | 2170113-26 | 4.56 ppb |
2017-01-11 | 2170113-16 | 4.35 ppb |
2017-01-11 | 2170113-18 | 5.42 ppb |
2017-01-11 | 2170113-19 | 6.32 ppb |
2017-01-11 | 2170113-23 | 4.47 ppb |
2017-01-11 | 2170113-24 | 7.03 ppb |
2017-01-11 | 2170113-25 | 4.32 ppb |
2017-01-11 | 2170113-17 | 3.40 ppb |
2017-01-11 | 2170113-22 | 5.88 ppb |
2017-01-11 | 2170113-15 | 5.96 ppb |
2017-01-11 | 2170113-20 | 6.35 ppb |
2017-01-11 | 2170113-21 | 6.53 ppb |
2017-04-10 | 2170414-33 | 5.71 ppb |
2017-04-10 | 2170414-34 | 5.36 ppb |
2017-04-10 | 2170414-35 | 5.43 ppb |
2017-04-10 | 2170414-36 | 8.07 ppb |
2017-04-10 | 2170414-37 | 3.18 ppb |
2017-04-10 | 2170414-40 | 3.20 ppb |
2017-04-10 | 2170414-41 | 8.21 ppb |
2017-04-10 | 2170414-42 | 7.96 ppb |
2017-04-10 | 2170414-43 | 6.83 ppb |
2017-04-10 | 2170414-44 | 7.34 ppb |
2017-05-25 | 2170526-17 | 9.19 ppb |
2017-05-25 | 2170526-18 | 8.35 ppb |
2017-07-10 | 2170714-32 | 8.24 ppb |
2017-07-11 | 2170714-29 | 7.81 ppb |
2017-07-11 | 2170714-30 | 7.21 ppb |
2017-07-11 | 2170714-31 | 7.42 ppb |
2017-07-11 | 2170714-33 | 8.10 ppb |
2017-07-11 | 2170714-34 | 8.99 ppb |
2017-07-11 | 2170714-35 | 7.79 ppb |
2017-07-12 | 2170714-36 | 7.88 ppb |
2017-07-12 | 2170714-37 | 8.75 ppb |
2017-07-12 | 2170714-38 | 7.51 ppb |
2017-07-12 | 2170714-39 | 8.02 ppb |
2017-07-12 | 2170714-40 | 8.07 ppb |
2017-10-09 | 2171012-18 | 7.55 ppb |
2017-10-09 | 2171012-26 | 7.08 ppb |
2017-10-10 | 2171012-15 | 6.96 ppb |
2017-10-10 | 2171012-16 | 7.71 ppb |
2017-10-10 | 2171012-17 | 7.12 ppb |
2017-10-10 | 2171012-19 | 7.40 ppb |
2017-10-10 | 2171012-20 | 7.64 ppb |
2017-10-10 | 2171012-21 | 7.59 ppb |
2017-10-11 | 2171012-22 | 7.45 ppb |
2017-10-11 | 2171012-23 | 7.58 ppb |
2017-10-11 | 2171012-24 | 7.88 ppb |
2017-10-11 | 2171012-25 | 8.63 ppb |
2018-01-09 | 2180112-33 | 4.22 ppb |
2018-01-09 | 2180112-35 | 3.15 ppb |
2018-01-09 | 2180112-36 | 5.66 ppb |
2018-01-09 | 2180112-37 | 5.56 ppb |
2018-01-09 | 2180112-38 | 5.46 ppb |
2018-01-09 | 2180112-39 | 5.35 ppb |
2018-01-09 | 2180112-41 | 4.64 ppb |
2018-01-09 | 2180112-44 | 5.89 ppb |
2018-01-09 | 2180112-40 | 4.01 ppb |
2018-01-09 | 2180112-43 | 5.35 ppb |
2018-01-10 | 2180112-42 | 5.95 ppb |
2018-01-11 | 2180112-34 | 6.38 ppb |
2018-04-09 | 2180413-18 | 6.54 ppb |
2018-04-09 | 2180413-19 | 7.05 ppb |
2018-04-09 | 2180413-20 | 6.60 ppb |
2018-04-09 | 2180413-26 | 7.37 ppb |
2018-04-11 | 2180413-15 | 5.63 ppb |
2018-04-11 | 2180413-16 | 5.39 ppb |
2018-04-11 | 2180413-17 | 5.43 ppb |
2018-04-11 | 2180413-22 | 5.30 ppb |
2018-04-11 | 2180413-23 | 5.78 ppb |
2018-04-11 | 2180413-25 | 5.43 ppb |
2018-04-12 | 2180413-21 | 6.69 ppb |
2018-04-12 | 2180413-24 | 6.43 ppb |
2018-07-09 | 2180711-19 | 6.57 ppb |
2018-07-09 | 2180711-20 | 7.70 ppb |
2018-07-09 | 2180711-21 | 7.63 ppb |
2018-07-09 | 2180711-22 | 8.66 ppb |
2018-07-09 | 2180711-23 | 8.28 ppb |
2018-07-09 | 2180711-26 | 8.60 ppb |
2018-07-09 | 2180711-27 | 7.17 ppb |
2018-07-09 | 2180711-28 | 8.58 ppb |
2018-07-10 | 2180711-17 | 5.30 ppb |
2018-07-10 | 2180711-18 | 7.11 ppb |
2018-07-10 | 2180711-24 | 6.05 ppb |
2018-07-10 | 2180711-25 | 6.32 ppb |
2018-10-08 | 2181009-17 | 8.37 ppb |
2018-10-08 | 2181009-18 | 8.01 ppb |
2018-10-08 | 2181009-19 | 6.62 ppb |
2018-10-08 | 2181009-20 | 7.76 ppb |
2018-10-08 | 2181009-21 | 7.78 ppb |
2018-10-08 | 2181009-22 | 9.34 ppb |
2018-10-08 | 2181009-23 | 8.14 ppb |
2018-10-08 | 2181009-24 | 6.71 ppb |
2018-10-08 | 2181009-25 | 6.76 ppb |
2018-10-08 | 2181009-26 | 6.81 ppb |
2018-10-08 | 2181009-27 | 6.65 ppb |
2018-10-08 | 2181009-28 | 7.55 ppb |
2019-01-07 | 2190109-11 | 5.36 ppb |
2019-01-07 | 2190109-12 | 5.35 ppb |
2019-01-07 | 2190109-13 | 5.81 ppb |
2019-01-07 | 2190109-14 | 5.29 ppb |
2019-01-07 | 2190109-23 | 5.52 ppb |
2019-01-07 | 2190109-26 | 5.44 ppb |
2019-01-07 | 2190109-27 | 5.54 ppb |
2019-01-07 | 2190109-28 | 6.53 ppb |
2019-01-08 | 2190109-09 | 5.18 ppb |
2019-01-08 | 2190109-10 | 4.80 ppb |
2019-01-08 | 2190109-24 | 4.57 ppb |
2019-01-08 | 2190109-25 | 5.02 ppb |
2019-04-08 | 2190410-17 | 5.37 ppb |
2019-04-08 | 2190410-18 | 5.70 ppb |
2019-04-08 | 2190410-19 | 5.18 ppb |
2019-04-08 | 2190410-20 | 5.59 ppb |
2019-04-08 | 2190410-21 | 5.56 ppb |
2019-04-08 | 2190410-22 | 5.37 ppb |
2019-04-08 | 2190410-23 | 5.44 ppb |
2019-04-08 | 2190410-24 | 6.17 ppb |
2019-04-08 | 2190410-25 | 5.93 ppb |
2019-04-08 | 2190410-26 | 5.41 ppb |
2019-04-08 | 2190410-27 | 6.15 ppb |
2019-04-08 | 2190410-28 | 5.15 ppb |
2019-07-11 | 2190712-09 | 7.42 ppb |
2019-07-11 | 2190712-10 | 7.40 ppb |
2019-07-11 | 2190712-11 | 8.47 ppb |
2019-07-11 | 2190712-12 | 7.73 ppb |
2019-07-11 | 2190712-13 | 8.81 ppb |
2019-07-11 | 2190712-14 | 7.42 ppb |
2019-07-11 | 2190712-23 | 7.77 ppb |
2019-07-11 | 2190712-24 | 7.69 ppb |
2019-07-11 | 2190712-25 | 7.95 ppb |
2019-07-11 | 2190712-26 | 9.44 ppb |
2019-07-11 | 2190712-27 | 8.67 ppb |
2019-07-11 | 2190712-28 | 9.80 ppb |
2019-10-14 | 2191016-09 | 8.10 ppb |
2019-10-14 | 2191016-10 | 6.20 ppb |
2019-10-14 | 2191016-11 | 6.30 ppb |
2019-10-14 | 2191016-12 | 7.33 ppb |
2019-10-14 | 2191016-13 | 7.77 ppb |
2019-10-14 | 2191016-14 | 8.56 ppb |
2019-10-16 | 2191018-09 | 6.58 ppb |
2019-10-16 | 2191018-10 | 6.44 ppb |
2019-10-16 | 2191018-11 | 6.51 ppb |
2019-10-16 | 2191018-12 | 6.34 ppb |
2019-10-16 | 2191018-13 | 6.67 ppb |
2019-10-16 | 2191018-14 | 7.06 ppb |