Know Your Environment. Protect Your Health.

Dibromochloromethane

College Place 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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

4

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.510 ppb21ND - 1.02 ppb
2019ND20ND
2020N/A00N/A
20210.800 ppb110.800 ppb
20220.260 ppb51ND - 1.30 ppb
20230.695 ppb21ND - 1.39 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 Lab ID Result
2018-09-171.02 ppb
2018-09-17ND
2019-09-17ND
2019-09-30ND
2021-12-0142133790.800 ppb
2022-05-314364605ND
2022-05-3143026601.30 ppb
2022-06-144309144ND
2022-06-144309149ND
2022-11-014365108ND
2023-02-064411960ND
2023-04-2545098561.39 ppb