Know Your Environment. Protect Your Health.

Dibromochloromethane

Ridge Spring, Town of

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.

 

48

Samples

0

Samples exceeding legal limit (MCL)

5

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.150 ppb81ND - 1.20 ppb
20190.288 ppb82ND - 1.20 ppb
20200.125 ppb81ND - 1.000 ppb
20210.138 ppb81ND - 1.10 ppb
2022ND80ND
2023ND80ND

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
2018-01-168010064-01ND
2018-01-168010064-02ND
2018-04-178040064-01ND
2018-04-178040064-02ND
2018-07-188070083-01ND
2018-07-188070083-021.20 ppb
2018-10-178100119-02ND
2018-10-178100119-01ND
2019-01-239010057-02ND
2019-01-239010057-01ND
2019-04-169040140-01ND
2019-04-169040140-021.20 ppb
2019-07-169070087-02ND
2019-07-169070087-01ND
2019-10-169100141-021.10 ppb
2019-10-169100141-01ND
2020-01-020010121-02ND
2020-01-220010121-01ND
2020-04-220040132-01ND
2020-04-220040132-02ND
2020-07-220070127-02ND
2020-07-220070127-01ND
2020-10-210100052-021.000 ppb
2020-10-210100052-01ND
2021-01-201010052-02ND
2021-01-201010052-01ND
2021-04-211040106-01ND
2021-04-211040106-02ND
2021-07-211070149-01ND
2021-07-211070149-02ND
2021-10-201100753-01ND
2021-10-201100753-021.10 ppb
2022-01-1922A0500-01ND
2022-01-1922A0500-02ND
2022-04-2022D0472-01ND
2022-04-2022D0472-02ND
2022-07-2022G0647-02ND
2022-07-2022G0647-01ND
2022-10-1922J0619-02ND
2022-10-1922J0619-01ND
2023-01-182230119-57ND
2023-01-182230119-58ND
2023-05-172230518-32ND
2023-05-172230518-31ND
2023-07-192230720-27ND
2023-07-192230720-28ND
2023-10-182231019-61ND
2023-10-182231019-62ND