Know Your Environment. Protect Your Health.

Dibromochloromethane

Shorewood Hills 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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

14

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.635 ppb220.560 ppb - 0.710 ppb
20190.663 ppb440.620 ppb - 0.700 ppb
20200.780 ppb220.700 ppb - 0.860 ppb
20210.785 ppb220.710 ppb - 0.860 ppb
20220.870 ppb220.820 ppb - 0.920 ppb
20230.360 ppb220.290 ppb - 0.430 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
2018-11-194203690010.560 ppb
2018-11-194203720010.710 ppb
2019-11-184817950010.670 ppb
2019-11-184818190010.700 ppb
2019-12-094848910010.620 ppb
2019-12-094848920010.660 ppb
2020-11-165361390010.700 ppb
2020-11-165361370010.860 ppb
2021-11-165947600010.710 ppb
2021-11-165947540010.860 ppb
2022-11-216541270010.820 ppb
2022-11-216541260010.920 ppb
2023-12-087138830010.290 ppb
2023-12-087138870010.430 ppb