Know Your Environment. Protect Your Health.

Dibromochloromethane

Briggsville Water District

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)

4

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
20190.505 ppb21ND - 1.01 ppb
2020ND10ND
20210.770 ppb110.770 ppb
20220.920 ppb110.920 ppb
20230.303 ppb31ND - 0.910 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 Result
2018-04-18ND
2019-04-171.01 ppb
2019-08-19ND
2020-06-04ND
2021-04-210.770 ppb
2022-04-130.920 ppb
2023-04-12ND
2023-09-130.910 ppb
2023-10-18ND