Know Your Environment. Protect Your Health.

Bromochloromethane

North City Water District

NOTE: North City Water District purchases water from Seattle Public Utilities which is required to test for bromochloromethane. Sample information shown below was taken by Seattle Public Utilities.

Bromochloromethane is a tap water disinfection byproduct; it is also used as an intermediate in chemical manufacturing and as a fire extinguishing agent. Disinfection byproducts in drinking water increase the risk of cancer.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND30ND
2014ND10ND
2015ND80ND
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
2021N/A00N/A
2022N/A00N/A
2023ND20ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.06 ppb

The EWG Health Guideline of 0.06 ppb for bromochloromethane was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer, harm to reproduction and child development, and change to fetal growth and development.

ppb = parts per billion

All test results

NOTE: North City Water District purchases water from Seattle Public Utilities which is required to test for bromochloromethane. Sample information shown below was taken by Seattle Public Utilities.

Date Lab ID Result
2015-01-13201501140525AMND
2015-01-13201501140778AMND
2015-04-06201504070229AMND
2015-04-06201504070359AMND
2015-07-22201507230482AMND
2015-07-22201507230496AMND
2015-10-13201509280091AMND
2015-10-13201509280090AMND
2023-08-154542961ND
2023-08-154542962ND