Know Your Environment. Protect Your Health.

Dibromochloromethane

Calmar Water Supply

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)

4

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.350 ppb110.350 ppb
2019ND10ND
20200.310 ppb110.310 ppb
20210.330 ppb110.330 ppb
20220.450 ppb110.450 ppb
2023ND10ND

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
2018-07-091G80555-010.350 ppb
2019-07-081G90677-01ND
2020-07-061G00450-010.310 ppb
2021-07-121EG1199-010.330 ppb
2022-07-121FG1111-010.450 ppb
2023-07-101GG0740-01ND