Dibromochloromethane
City of Columbia
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.
248
Samples
0
Samples exceeding legal limit (MCL)
213
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 1.95 ppb | 32 | 27 | ND - 4.33 ppb |
| 2015 | 2.00 ppb | 32 | 30 | ND - 5.62 ppb |
| 2016 | 1.45 ppb | 40 | 30 | ND - 3.44 ppb |
| 2017 | 1.51 ppb | 48 | 37 | ND - 2.67 ppb |
| 2018 | 2.11 ppb | 48 | 47 | ND - 3.62 ppb |
| 2019 | 1.77 ppb | 48 | 42 | ND - 2.67 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 |
|---|---|---|
| 2014-01-14 | 2140115-3 | 1.38 ppb |
| 2014-01-14 | 2140115-4 | 1.63 ppb |
| 2014-01-15 | 2140116-10 | ND |
| 2014-01-15 | 2140116-11 | ND |
| 2014-01-15 | 2140116-12 | ND |
| 2014-01-15 | 2140116-13 | 1.49 ppb |
| 2014-01-15 | 2140116-14 | 1.23 ppb |
| 2014-01-15 | 2140116-9 | 1.39 ppb |
| 2014-04-07 | 2140408-10 | 3.16 ppb |
| 2014-04-07 | 2140408-11 | 2.73 ppb |
| 2014-04-07 | 2140408-12 | 4.12 ppb |
| 2014-04-07 | 2140408-13 | ND |
| 2014-04-07 | 2140408-14 | 1.41 ppb |
| 2014-04-07 | 2140408-9 | 1.27 ppb |
| 2014-04-09 | 2140410-3 | 1.12 ppb |
| 2014-04-09 | 2140410-4 | ND |
| 2014-07-07 | 2140708-11 | 1.59 ppb |
| 2014-07-07 | 2140708-12 | 4.13 ppb |
| 2014-07-07 | 2140708-13 | 3.34 ppb |
| 2014-07-07 | 2140708-14 | 4.26 ppb |
| 2014-07-07 | 2140708-15 | 2.19 ppb |
| 2014-07-07 | 2140708-16 | 1.95 ppb |
| 2014-07-07 | 2140708-17 | 1.81 ppb |
| 2014-07-07 | 2140708-18 | 1.73 ppb |
| 2014-10-13 | 2141014-23 | 1.95 ppb |
| 2014-10-13 | 2141014-24 | 3.54 ppb |
| 2014-10-13 | 2141014-25 | 3.52 ppb |
| 2014-10-13 | 2141014-26 | 4.33 ppb |
| 2014-10-13 | 2141014-27 | 1.79 ppb |
| 2014-10-13 | 2141014-28 | 1.72 ppb |
| 2014-10-13 | 2141014-29 | 1.82 ppb |
| 2014-10-13 | 2141014-30 | 1.89 ppb |
| 2015-01-12 | 2150113-11 | 1.38 ppb |
| 2015-01-12 | 2150113-12 | 1.29 ppb |
| 2015-01-12 | 2150113-13 | ND |
| 2015-01-12 | 2150113-14 | 1.28 ppb |
| 2015-01-12 | 2150113-15 | 1.53 ppb |
| 2015-01-12 | 2150113-16 | 1.32 ppb |
| 2015-01-12 | 2150113-17 | 1.39 ppb |
| 2015-01-12 | 2150113-18 | 1.44 ppb |
| 2015-04-06 | 2150408-19 | 1.11 ppb |
| 2015-04-06 | 2150408-20 | 4.16 ppb |
| 2015-04-06 | 2150408-21 | 3.16 ppb |
| 2015-04-06 | 2150408-22 | 3.64 ppb |
| 2015-04-06 | 2150408-23 | 1.52 ppb |
| 2015-04-06 | 2150408-24 | 1.21 ppb |
| 2015-04-06 | 2150408-25 | 1.07 ppb |
| 2015-04-06 | 2150408-26 | 1.18 ppb |
| 2015-07-13 | 2150717-53 | 3.51 ppb |
| 2015-07-13 | 2150717-54 | 5.62 ppb |
| 2015-07-13 | 2150717-55 | 3.30 ppb |
| 2015-07-13 | 2150717-56 | 4.88 ppb |
| 2015-07-13 | 2150717-57 | 2.86 ppb |
| 2015-07-13 | 2150717-58 | 2.86 ppb |
| 2015-07-13 | 2150717-59 | 3.40 ppb |
| 2015-07-13 | 2150717-60 | 2.96 ppb |
| 2015-11-09 | 2151116-11 | 1.27 ppb |
| 2015-11-09 | 2151116-12 | 0.530 ppb |
| 2015-11-09 | 2151116-13 | ND |
| 2015-11-09 | 2151116-14 | 0.370 ppb |
| 2015-11-09 | 2151116-15 | 1.31 ppb |
| 2015-11-09 | 2151116-16 | 1.49 ppb |
| 2015-11-09 | 2151116-17 | 1.46 ppb |
| 2015-11-09 | 2151116-18 | 1.38 ppb |
| 2016-01-11 | 2160114-12 | ND |
| 2016-01-11 | 2160114-14 | ND |
| 2016-01-11 | 2160114-15 | 1.96 ppb |
| 2016-01-11 | 2160114-13 | ND |
| 2016-01-11 | 2160114-11 | 1.54 ppb |
| 2016-01-12 | 2160114-16 | 1.75 ppb |
| 2016-01-12 | 2160114-17 | 1.55 ppb |
| 2016-01-13 | 2160114-18 | 1.82 ppb |
| 2016-04-12 | 2160413-12 | 1.67 ppb |
| 2016-04-12 | 2160413-14 | 1.06 ppb |
| 2016-04-12 | 2160413-15 | ND |
| 2016-04-12 | 2160413-13 | 3.44 ppb |
| 2016-04-12 | 2160413-18 | ND |
| 2016-04-12 | 2160413-11 | 1.44 ppb |
| 2016-04-12 | 2160413-16 | ND |
| 2016-04-12 | 2160413-17 | ND |
| 2016-08-24 | 2160826-26 | 2.03 ppb |
| 2016-08-24 | 2160826-16 | 1.90 ppb |
| 2016-08-24 | 2160826-18 | 2.31 ppb |
| 2016-08-24 | 2160826-19 | 2.25 ppb |
| 2016-08-24 | 2160826-23 | 2.27 ppb |
| 2016-08-24 | 2160826-24 | 2.90 ppb |
| 2016-08-24 | 2160826-25 | 2.42 ppb |
| 2016-08-24 | 2160826-17 | 2.36 ppb |
| 2016-08-24 | 2160826-22 | 1.44 ppb |
| 2016-08-24 | 2160826-15 | 1.49 ppb |
| 2016-08-24 | 2160826-20 | 1.47 ppb |
| 2016-08-24 | 2160826-21 | 1.61 ppb |
| 2016-10-11 | 2161014-26 | 1.40 ppb |
| 2016-10-11 | 2161014-16 | 2.19 ppb |
| 2016-10-11 | 2161014-18 | 2.77 ppb |
| 2016-10-11 | 2161014-19 | 1.92 ppb |
| 2016-10-11 | 2161014-23 | ND |
| 2016-10-11 | 2161014-24 | 1.83 ppb |
| 2016-10-11 | 2161014-25 | ND |
| 2016-10-11 | 2161014-17 | ND |
| 2016-10-11 | 2161014-22 | 1.60 ppb |
| 2016-10-11 | 2161014-15 | 1.92 ppb |
| 2016-10-11 | 2161014-20 | 1.90 ppb |
| 2016-10-11 | 2161014-21 | 1.84 ppb |
| 2017-01-11 | 2170113-26 | ND |
| 2017-01-11 | 2170113-16 | ND |
| 2017-01-11 | 2170113-18 | ND |
| 2017-01-11 | 2170113-19 | 1.10 ppb |
| 2017-01-11 | 2170113-23 | ND |
| 2017-01-11 | 2170113-24 | 1.29 ppb |
| 2017-01-11 | 2170113-25 | ND |
| 2017-01-11 | 2170113-17 | ND |
| 2017-01-11 | 2170113-22 | 1.03 ppb |
| 2017-01-11 | 2170113-15 | 1.03 ppb |
| 2017-01-11 | 2170113-20 | 1.10 ppb |
| 2017-01-11 | 2170113-21 | 1.16 ppb |
| 2017-04-10 | 2170414-33 | ND |
| 2017-04-10 | 2170414-34 | ND |
| 2017-04-10 | 2170414-35 | ND |
| 2017-04-10 | 2170414-36 | 1.86 ppb |
| 2017-04-10 | 2170414-37 | ND |
| 2017-04-10 | 2170414-40 | ND |
| 2017-04-10 | 2170414-41 | 1.86 ppb |
| 2017-04-10 | 2170414-42 | 1.81 ppb |
| 2017-04-10 | 2170414-43 | 1.47 ppb |
| 2017-04-10 | 2170414-44 | 1.66 ppb |
| 2017-05-25 | 2170526-17 | 2.46 ppb |
| 2017-05-25 | 2170526-18 | 2.24 ppb |
| 2017-07-10 | 2170714-32 | 2.22 ppb |
| 2017-07-11 | 2170714-29 | 1.84 ppb |
| 2017-07-11 | 2170714-30 | 1.76 ppb |
| 2017-07-11 | 2170714-31 | 1.68 ppb |
| 2017-07-11 | 2170714-33 | 1.94 ppb |
| 2017-07-11 | 2170714-34 | 2.45 ppb |
| 2017-07-11 | 2170714-35 | 1.82 ppb |
| 2017-07-12 | 2170714-36 | 1.94 ppb |
| 2017-07-12 | 2170714-37 | 2.35 ppb |
| 2017-07-12 | 2170714-38 | 2.04 ppb |
| 2017-07-12 | 2170714-39 | 2.26 ppb |
| 2017-07-12 | 2170714-40 | 2.25 ppb |
| 2017-10-09 | 2171012-18 | 2.21 ppb |
| 2017-10-09 | 2171012-26 | 2.22 ppb |
| 2017-10-10 | 2171012-15 | 2.10 ppb |
| 2017-10-10 | 2171012-16 | 2.33 ppb |
| 2017-10-10 | 2171012-17 | 2.13 ppb |
| 2017-10-10 | 2171012-19 | 2.28 ppb |
| 2017-10-10 | 2171012-20 | 2.32 ppb |
| 2017-10-10 | 2171012-21 | 2.28 ppb |
| 2017-10-11 | 2171012-22 | 2.37 ppb |
| 2017-10-11 | 2171012-23 | 2.36 ppb |
| 2017-10-11 | 2171012-24 | 2.44 ppb |
| 2017-10-11 | 2171012-25 | 2.67 ppb |
| 2018-01-09 | 2180112-33 | 1.26 ppb |
| 2018-01-09 | 2180112-35 | 1.05 ppb |
| 2018-01-09 | 2180112-36 | 2.02 ppb |
| 2018-01-09 | 2180112-37 | 1.92 ppb |
| 2018-01-09 | 2180112-38 | 1.88 ppb |
| 2018-01-09 | 2180112-39 | 1.88 ppb |
| 2018-01-09 | 2180112-41 | 1.39 ppb |
| 2018-01-09 | 2180112-44 | 2.13 ppb |
| 2018-01-09 | 2180112-40 | 1.25 ppb |
| 2018-01-09 | 2180112-43 | 1.63 ppb |
| 2018-01-10 | 2180112-42 | 2.11 ppb |
| 2018-01-11 | 2180112-34 | 2.03 ppb |
| 2018-04-09 | 2180413-18 | 2.31 ppb |
| 2018-04-09 | 2180413-19 | 2.56 ppb |
| 2018-04-09 | 2180413-20 | 2.27 ppb |
| 2018-04-09 | 2180413-26 | 2.56 ppb |
| 2018-04-11 | 2180413-15 | 1.95 ppb |
| 2018-04-11 | 2180413-16 | 1.81 ppb |
| 2018-04-11 | 2180413-17 | 1.94 ppb |
| 2018-04-11 | 2180413-22 | 1.84 ppb |
| 2018-04-11 | 2180413-23 | 1.87 ppb |
| 2018-04-11 | 2180413-25 | 1.94 ppb |
| 2018-04-12 | 2180413-21 | 2.29 ppb |
| 2018-04-12 | 2180413-24 | 2.28 ppb |
| 2018-07-09 | 2180711-19 | 1.43 ppb |
| 2018-07-09 | 2180711-20 | 2.58 ppb |
| 2018-07-09 | 2180711-21 | 2.56 ppb |
| 2018-07-09 | 2180711-22 | 2.85 ppb |
| 2018-07-09 | 2180711-23 | 2.75 ppb |
| 2018-07-09 | 2180711-26 | 2.97 ppb |
| 2018-07-09 | 2180711-27 | 1.51 ppb |
| 2018-07-09 | 2180711-28 | 2.86 ppb |
| 2018-07-10 | 2180711-17 | ND |
| 2018-07-10 | 2180711-18 | 1.55 ppb |
| 2018-07-10 | 2180711-24 | 1.38 ppb |
| 2018-07-10 | 2180711-25 | 1.25 ppb |
| 2018-10-08 | 2181009-17 | 2.33 ppb |
| 2018-10-08 | 2181009-18 | 2.32 ppb |
| 2018-10-08 | 2181009-19 | 2.18 ppb |
| 2018-10-08 | 2181009-20 | 2.81 ppb |
| 2018-10-08 | 2181009-21 | 3.20 ppb |
| 2018-10-08 | 2181009-22 | 3.62 ppb |
| 2018-10-08 | 2181009-23 | 3.01 ppb |
| 2018-10-08 | 2181009-24 | 2.08 ppb |
| 2018-10-08 | 2181009-25 | 2.20 ppb |
| 2018-10-08 | 2181009-26 | 3.05 ppb |
| 2018-10-08 | 2181009-27 | 2.08 ppb |
| 2018-10-08 | 2181009-28 | 2.41 ppb |
| 2019-01-07 | 2190109-11 | ND |
| 2019-01-07 | 2190109-12 | 1.94 ppb |
| 2019-01-07 | 2190109-13 | 2.09 ppb |
| 2019-01-07 | 2190109-14 | 1.96 ppb |
| 2019-01-07 | 2190109-23 | 2.14 ppb |
| 2019-01-07 | 2190109-26 | 2.02 ppb |
| 2019-01-07 | 2190109-27 | ND |
| 2019-01-07 | 2190109-28 | 2.37 ppb |
| 2019-01-08 | 2190109-09 | ND |
| 2019-01-08 | 2190109-10 | ND |
| 2019-01-08 | 2190109-24 | ND |
| 2019-01-08 | 2190109-25 | ND |
| 2019-04-08 | 2190410-17 | 1.58 ppb |
| 2019-04-08 | 2190410-18 | 1.51 ppb |
| 2019-04-08 | 2190410-19 | 1.48 ppb |
| 2019-04-08 | 2190410-20 | 1.76 ppb |
| 2019-04-08 | 2190410-21 | 1.72 ppb |
| 2019-04-08 | 2190410-22 | 1.70 ppb |
| 2019-04-08 | 2190410-23 | 1.69 ppb |
| 2019-04-08 | 2190410-24 | 1.69 ppb |
| 2019-04-08 | 2190410-25 | 1.70 ppb |
| 2019-04-08 | 2190410-26 | 1.72 ppb |
| 2019-04-08 | 2190410-27 | 1.70 ppb |
| 2019-04-08 | 2190410-28 | 1.68 ppb |
| 2019-07-11 | 2190712-09 | 1.75 ppb |
| 2019-07-11 | 2190712-10 | 1.67 ppb |
| 2019-07-11 | 2190712-11 | 2.04 ppb |
| 2019-07-11 | 2190712-12 | 2.08 ppb |
| 2019-07-11 | 2190712-13 | 2.53 ppb |
| 2019-07-11 | 2190712-14 | 1.93 ppb |
| 2019-07-11 | 2190712-23 | 2.16 ppb |
| 2019-07-11 | 2190712-24 | 1.86 ppb |
| 2019-07-11 | 2190712-25 | 1.89 ppb |
| 2019-07-11 | 2190712-26 | 2.62 ppb |
| 2019-07-11 | 2190712-27 | 2.15 ppb |
| 2019-07-11 | 2190712-28 | 2.67 ppb |
| 2019-10-14 | 2191016-09 | 2.19 ppb |
| 2019-10-14 | 2191016-10 | 1.77 ppb |
| 2019-10-14 | 2191016-11 | 1.90 ppb |
| 2019-10-14 | 2191016-12 | 2.15 ppb |
| 2019-10-14 | 2191016-13 | 2.07 ppb |
| 2019-10-14 | 2191016-14 | 2.31 ppb |
| 2019-10-16 | 2191018-09 | 2.42 ppb |
| 2019-10-16 | 2191018-10 | 2.52 ppb |
| 2019-10-16 | 2191018-11 | 2.45 ppb |
| 2019-10-16 | 2191018-12 | 2.28 ppb |
| 2019-10-16 | 2191018-13 | 2.37 ppb |
| 2019-10-16 | 2191018-14 | 2.50 ppb |