Know Your Environment. Protect Your Health.

Dibromochloromethane

Rockwood Meadows

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.

 

17

Samples

0

Samples exceeding legal limit (MCL)

7

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.300 ppb31ND - 0.900 ppb
20190.167 ppb31ND - 0.500 ppb
20200.440 ppb42ND - 1.16 ppb
20210.233 ppb31ND - 0.700 ppb
2022N/A00N/A
20230.420 ppb42ND - 1.20 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
2018-09-17ND
2018-09-17ND
2018-09-170.900 ppb
2019-08-070.500 ppb
2019-08-07ND
2019-08-07ND
2020-07-22ND
2020-07-22ND
2020-07-220.600 ppb
2020-08-201.16 ppb
2021-09-07ND
2021-09-07ND
2021-09-070.700 ppb
2023-08-291.20 ppb
2023-09-050.480 ppb
2023-09-05ND
2023-09-05ND