Know Your Environment. Protect Your Health.

Dibromochloromethane

Ten Mile and Pleasant Valley Wua

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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

5

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.900 ppb110.900 ppb
20190.515 ppb21ND - 1.03 ppb
20200.460 ppb21ND - 0.920 ppb
20210.402 ppb62ND - 1.71 ppb
2022ND20ND
2023ND10ND

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
2018-08-221808294-010.900 ppb
2019-08-061908077-011.03 ppb
2019-10-211910208-01ND
2020-08-112008138-01ND
2020-11-162011146-010.920 ppb
2021-01-072101100-011.71 ppb
2021-03-242103214-010.700 ppb
2021-06-162106250-01ND
2021-08-092108124-01ND
2021-10-082110131-01ND
2021-12-072112072-01ND
2022-03-082203099-01ND
2022-08-082208120-01ND
2023-08-082308114-01ND