Know Your Environment. Protect Your Health.

Dibromochloromethane

Rocklyn Subdivision Phase 2

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.

 

15

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.302 ppb4812ND - 1.40 ppb
2019ND20ND
2020ND30ND
20210.250 ppb41ND - 1.000 ppb
20220.500 ppb21ND - 1.000 ppb
20230.275 ppb41ND - 1.10 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
2019-05-233843-19ND
2019-07-174325-19ND
2020-02-18560-20ND
2020-05-261403-20ND
2020-08-182376-20AND
2021-02-1792522809001_37706ND
2021-05-188123-051821-B01M1.000 ppb
2021-08-258123-082521-B01MND
2021-11-228123A-112221-B01MND
2022-08-168123-081622-B01M1.000 ppb
2022-11-298123-112922-B01MND
2023-03-148123-031423-B01M1.10 ppb
2023-05-098123-050923-B01MND
2023-08-178123-081723-B01MND
2023-11-078123-110723-B01MND