Know Your Environment. Protect Your Health.

Dibromochloromethane

Fairchild Air Force Base

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)

7

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.940 ppb110.940 ppb
20190.493 ppb32ND - 0.810 ppb
2020N/A00N/A
20210.540 ppb110.540 ppb
20220.513 ppb32ND - 0.810 ppb
20230.920 ppb110.920 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
2018-07-100.940 ppb
2019-04-090.670 ppb
2019-07-230.810 ppb
2019-07-23ND
2021-07-2341472490.540 ppb
2022-04-1942723830.730 ppb
2022-04-194272382ND
2022-07-0643087140.810 ppb
2023-08-2945131840.920 ppb