Dibromochloromethane
Marion Waterworks
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 |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | ND | 27 | 0 | ND |
2015 | 0.133 ppb | 20 | 9 | ND - 0.550 ppb |
2016 | 0.0850 ppb | 6 | 1 | ND - 0.510 ppb |
2017 | 0.0500 ppb | 8 | 1 | ND - 0.400 ppb |
2018 | 0.178 ppb | 19 | 10 | ND - 0.846 ppb |
2019 | ND | 4 | 0 | ND |
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 | 14016004002 | ND |
2014-01-14 | 14016003802 | ND |
2014-01-14 | 14016004102 | ND |
2014-01-14 | 14016003902 | ND |
2014-01-21 | 14023010902 | ND |
2014-01-21 | 14023010802 | ND |
2014-01-21 | 14023011002 | ND |
2014-02-19 | 14051001901 | ND |
2014-04-07 | 14100001402 | ND |
2014-04-07 | 14100000501 | ND |
2014-04-07 | 14100001702 | ND |
2014-04-07 | 14100001602 | ND |
2014-04-07 | 14100001502 | ND |
2014-07-14 | 14198000501 | ND |
2014-07-14 | 14198002902 | ND |
2014-07-14 | 14198003002 | ND |
2014-07-14 | 14198002802 | ND |
2014-07-14 | 14198000701 | ND |
2014-07-14 | 14198000601 | ND |
2014-07-14 | 14198003102 | ND |
2014-10-13 | 14289002002 | ND |
2014-10-13 | 14289002102 | ND |
2014-10-13 | 14289002302 | ND |
2014-10-13 | 14289002202 | ND |
2014-11-10 | 14316000601 | ND |
2014-11-10 | 14316000501 | ND |
2014-11-24 | 14330004001 | ND |
2015-01-27 | 15029007401 | ND |
2015-01-27 | 15029007302 | 0.500 ppb |
2015-06-09 | 15161003001 | 0.550 ppb |
2015-06-09 | 15161004302 | ND |
2015-06-09 | 15161004202 | ND |
2015-06-09 | 15161002901 | 0.530 ppb |
2015-06-22 | 15175000502 | ND |
2015-06-22 | 15175000402 | ND |
2015-09-16 | 15260000403 | 0.179 ppb |
2015-09-16 | 15260000409 | ND |
2015-09-16 | 15260000503 | 0.0544 ppb |
2015-09-16 | 15260000509 | ND |
2015-09-16 | 15260000303 | 0.326 ppb |
2015-09-16 | 15260000309 | ND |
2015-11-19 | 15324001802 | ND |
2015-11-19 | 15324001603 | 0.0538 ppb |
2015-11-19 | 15324001609 | ND |
2015-11-19 | 15324001903 | 0.141 ppb |
2015-11-19 | 15324002002 | ND |
2015-11-19 | 15324001703 | 0.330 ppb |
2016-02-15 | 16049004901 | 0.510 ppb |
2016-04-25 | 16119012202 | ND |
2016-04-25 | 16119012102 | ND |
2016-07-12 | 16196006901 | ND |
2016-10-03 | 16279002302 | ND |
2016-10-03 | 16279002402 | ND |
2017-01-16 | 17019008201 | ND |
2017-04-11 | 17103009602 | ND |
2017-04-11 | 17103009302 | ND |
2017-08-01 | 17215002201 | ND |
2017-10-30 | 17306004502 | ND |
2017-10-30 | 17306004702 | ND |
2017-12-06 | 17341002003 | 0.400 ppb |
2017-12-06 | 17341002009 | ND |
2018-01-18 | 18019004301 | ND |
2018-01-18 | 18019004206 | ND |
2018-01-18 | 18019004203 | 0.0710 ppb |
2018-04-10 | 18101008303 | 0.348 ppb |
2018-04-10 | 18101008309 | ND |
2018-05-08 | 18130001902 | ND |
2018-05-08 | 18130001802 | ND |
2018-08-15 | 18228001403 | 0.289 ppb |
2018-08-15 | 18228001309 | 0.520 ppb |
2018-08-15 | 18228001203 | 0.305 ppb |
2018-08-15 | 18228001303 | 0.846 ppb |
2018-08-15 | 18228001209 | ND |
2018-08-15 | 18228001103 | 0.285 ppb |
2018-08-15 | 18228001409 | ND |
2018-10-15 | 18291006403 | 0.233 ppb |
2018-10-15 | 18291006303 | 0.235 ppb |
2018-10-15 | 18291006802 | ND |
2018-10-15 | 18291006203 | 0.250 ppb |
2018-10-15 | 18291006902 | ND |
2019-01-07 | 19010014901 | ND |
2019-07-30 | 19212004401 | ND |
2019-10-08 | 19283006202 | ND |
2019-10-08 | 19283006102 | ND |