Know Your Environment. Protect Your Health.

Dibromochloromethane

Groveland Water Department

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.

 

26

Samples

0

Samples exceeding legal limit (MCL)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019N/A00N/A
20202.04 ppb72ND - 8.60 ppb
2021ND50ND
20222.07 ppb72ND - 9.10 ppb
20232.66 ppb72ND - 9.60 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 Result
2020-02-05ND
2020-04-01ND
2020-04-01ND
2020-07-15ND
2020-08-058.60 ppb
2020-08-055.70 ppb
2020-10-05ND
2021-01-20ND
2021-04-05ND
2021-04-05ND
2021-07-21ND
2021-10-18ND
2022-02-02ND
2022-04-04ND
2022-04-04ND
2022-07-20ND
2022-08-039.10 ppb
2022-08-105.40 ppb
2022-11-02ND
2023-01-18ND
2023-05-03ND
2023-05-03ND
2023-07-19ND
2023-08-029.00 ppb
2023-08-029.60 ppb
2023-10-04ND