Know Your Environment. Protect Your Health.

Dibromochloromethane

Carver Municipal Buildings

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.

 

9

Samples

0

Samples exceeding legal limit (MCL)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.950 ppb21ND - 1.90 ppb
20192.57 ppb220.560 ppb - 4.58 ppb
20203.46 ppb113.46 ppb
2021ND20ND
2022N/A00N/A
20232.05 ppb221.000 ppb - 3.10 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
2018-08-211.90 ppb
2018-11-13ND
2019-07-160.560 ppb
2019-09-104.58 ppb
2020-11-103.46 ppb
2021-09-13ND
2021-09-13ND
2023-09-061.000 ppb
2023-09-273.10 ppb