Know Your Environment. Protect Your Health.

Dibromochloromethane

Mendon City

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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.900 ppb32ND - 2.10 ppb
20190.400 ppb31ND - 1.20 ppb
20200.500 ppb21ND - 1.000 ppb
20210.233 ppb31ND - 0.700 ppb
20220.267 ppb31ND - 0.800 ppb
2023ND20ND

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
2018-08-150.600 ppb
2018-08-152.10 ppb
2018-11-07ND
2019-08-07ND
2019-08-07ND
2019-08-071.20 ppb
2020-09-301.000 ppb
2020-09-30ND
2021-08-180.700 ppb
2021-08-18ND
2021-08-18ND
2022-09-130.800 ppb
2022-09-13ND
2022-09-13ND
2023-08-15ND
2023-08-16ND