Know Your Environment. Protect Your Health.

Dibromochloromethane

City of Tolar

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
20190.380 ppb31ND - 1.14 ppb
2020ND30ND
2021ND30ND
20220.910 ppb32ND - 1.73 ppb
2023ND30ND

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
2018-08-02Q1830780003ND
2018-08-02Q1830780017ND
2018-08-02Q1830780001ND
2019-08-26Q1959151003ND
2019-08-26Q1959151005ND
2019-08-26Q19591510091.14 ppb
2020-08-12Q2032138001ND
2020-08-12Q2032138003ND
2020-08-12Q2032138009ND
2021-06-07Q2114601005ND
2021-06-07Q2114601017ND
2021-06-07Q2114601007ND
2022-06-20Q22169370011.73 ppb
2022-06-20Q2216937003ND
2022-06-20Q22169370091.000 ppb
2023-05-10Q2317956005ND
2023-05-10Q2317956007ND
2023-05-10Q2317956009ND