Know Your Environment. Protect Your Health.

Dibromochloromethane

Forbes, City of

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

9

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.540 ppb110.540 ppb
2019ND10ND
20200.640 ppb110.640 ppb
20211.02 ppb111.02 ppb
20221.27 ppb330.810 ppb - 2.03 ppb
20230.853 ppb330.660 ppb - 1.11 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
2018-08-2218-S18610.540 ppb
2019-08-2019-S1791ND
2020-08-313710320.640 ppb
2021-12-073905931.02 ppb
2022-02-073920562.03 ppb
2022-08-093998360.960 ppb
2022-11-084039060.810 ppb
2023-02-064071881.11 ppb
2023-05-164111580.790 ppb
2023-08-084151290.660 ppb