Know Your Environment. Protect Your Health.

Dibromochloromethane

Cornell Waterworks

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.

 

30

Samples

0

Samples exceeding legal limit (MCL)

17

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.220 ppb110.220 ppb
2019N/A00N/A
20200.573 ppb330.530 ppb - 0.640 ppb
20210.269 ppb108ND - 0.510 ppb
20220.441 ppb85ND - 0.990 ppb
2023ND80ND

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
2018-09-1710806800.220 ppb
2020-09-2212168030.550 ppb
2020-11-1112278590.530 ppb
2020-11-1112278580.640 ppb
2021-02-1612400080.220 ppb
2021-02-1612400070.330 ppb
2021-02-1612400080.220 ppb
2021-02-1612400070.330 ppb
2021-05-1812544630.430 ppb
2021-05-1812544640.510 ppb
2021-08-171272076ND
2021-08-171272077ND
2021-11-1612894580.320 ppb
2021-11-1612894590.330 ppb
2022-02-1512997450.990 ppb
2022-02-151299746ND
2022-05-1713134710.580 ppb
2022-05-1713134720.600 ppb
2022-08-1613302980.630 ppb
2022-08-1613302990.730 ppb
2022-11-161349841ND
2022-11-161349840ND
2023-02-14CB01498-01ND
2023-02-14CB01498-02ND
2023-05-16CB05109-02ND
2023-05-16CB05109-01ND
2023-08-15CB09703-01ND
2023-08-15CB09703-02ND
2023-11-14CB14017-02ND
2023-11-14CB14017-01ND