Know Your Environment. Protect Your Health.

Dibromochloromethane

King County Water District No 90

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.

 

81

Samples

0

Samples exceeding legal limit (MCL)

9

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.183 ppb165ND - 0.660 ppb
20190.0743 ppb162ND - 0.638 ppb
2020N/A00N/A
20210.0662 ppb162ND - 0.539 ppb
2022ND170ND
2023ND160ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.1 ppb

The EWG Health Guideline of 0.1 ppb for dibromochloromethane was based on the California Office of Environmental Health Hazard Assessment's public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer and harm to fetal growth and development.

ppb = parts per billion

All test results

Date Lab ID Result
2018-03-08ND
2018-03-08ND
2018-03-08ND
2018-03-08ND
2018-06-050.520 ppb
2018-06-05ND
2018-06-05ND
2018-06-05ND
2018-09-06ND
2018-09-060.630 ppb
2018-09-06ND
2018-09-06ND
2018-12-050.610 ppb
2018-12-050.500 ppb
2018-12-05ND
2018-12-050.660 ppb
2019-03-07ND
2019-03-07ND
2019-03-07ND
2019-03-07ND
2019-06-05ND
2019-06-05ND
2019-06-05ND
2019-06-05ND
2019-09-050.551 ppb
2019-09-050.638 ppb
2019-09-05ND
2019-09-05ND
2019-12-05ND
2019-12-05ND
2019-12-05ND
2019-12-05ND
2021-03-034088967ND
2021-03-034088969ND
2021-03-034088966ND
2021-03-034088968ND
2021-06-024130774ND
2021-06-024130772ND
2021-06-024130775ND
2021-06-024130773ND
2021-09-024172459ND
2021-09-024172460ND
2021-09-024172457ND
2021-09-024172458ND
2021-12-0242159550.520 ppb
2021-12-024215957ND
2021-12-0242159560.539 ppb
2021-12-024215954ND
2022-03-024258178ND
2022-03-024258177ND
2022-03-024258176ND
2022-03-024258179ND
2022-05-194296745ND
2022-06-024295039ND
2022-06-024295041ND
2022-06-024295040ND
2022-06-024295038ND
2022-09-064343559ND
2022-09-064343558ND
2022-09-064343561ND
2022-09-064343560ND
2022-12-074385547ND
2022-12-074385549ND
2022-12-074385546ND
2022-12-074385548ND
2023-03-024426510ND
2023-03-024426512ND
2023-03-024426513ND
2023-03-024426511ND
2023-06-014468646ND
2023-06-014468649ND
2023-06-014468647ND
2023-06-014468648ND
2023-09-044514519ND
2023-09-044514521ND
2023-09-044514520ND
2023-09-044514518ND
2023-12-054557020ND
2023-12-054557022ND
2023-12-054557019ND
2023-12-054557021ND