Know Your Environment. Protect Your Health.

Bromodichloromethane

South Council Creek 2

Bromodichloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromodichloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

 

8

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
20190.900 ppb21ND - 1.80 ppb
2020ND10ND
2021ND10ND
20220.500 ppb21ND - 1.000 ppb
2023ND10ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.06 ppb

The EWG Health Guideline of 0.06 ppb for bromodichloromethane 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
2018-08-15AE37196ND
2019-05-15AE664741.80 ppb
2019-05-15AE66504ND
2020-04-22AF07551ND
2021-02-10Q2104465001ND
2022-02-16AF85063ND
2022-09-13AG125871.000 ppb
2023-05-31AG42510ND