Know Your Environment. Protect Your Health.

Dibromochloromethane

Theresa 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.

 

6

Samples

0

Samples exceeding legal limit (MCL)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
20190.260 ppb110.260 ppb
20200.750 ppb110.750 ppb
20210.350 ppb110.350 ppb
20222.11 ppb221.71 ppb - 2.51 ppb
20230.740 ppb110.740 ppb

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
2019-07-0211320200.260 ppb
2020-08-1212066060.750 ppb
2021-07-2012663140.350 ppb
2022-07-13520233051.71 ppb
2022-08-10520266972.51 ppb
2023-07-19530272840.740 ppb