Know Your Environment. Protect Your Health.

Dibromochloromethane

Federal Correctional Institution

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.

 

9

Samples

0

Samples exceeding legal limit (MCL)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.650 ppb110.650 ppb
20190.660 ppb110.660 ppb
20200.273 ppb31ND - 0.820 ppb
20210.890 ppb110.890 ppb
20220.990 ppb110.990 ppb
20230.400 ppb21ND - 0.800 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
2018-08-301714430.650 ppb
2019-09-063238900.660 ppb
2020-05-27424253ND
2020-05-27424256ND
2020-08-264662280.820 ppb
2021-09-0110437920.890 ppb
2022-08-3112294120.990 ppb
2023-06-011330605ND
2023-08-0713568960.800 ppb