Know Your Environment. Protect Your Health.

Dibromochloromethane

Crested Butte, Town 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.

 

26

Samples

0

Samples exceeding legal limit (MCL)

13

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.975 ppb43ND - 2.10 ppb
20190.160 ppb51ND - 0.800 ppb
2020ND40ND
20210.400 ppb42ND - 1.000 ppb
20221.22 ppb54ND - 2.30 ppb
20230.790 ppb43ND - 1.60 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
2018-01-24ND
2018-04-112.10 ppb
2018-07-120.800 ppb
2018-10-101.000 ppb
2019-01-10ND
2019-04-100.800 ppb
2019-07-10ND
2019-08-14ND
2019-10-09ND
2020-01-09ND
2020-04-07ND
2020-07-07ND
2020-10-14ND
2021-01-13ND
2021-04-070.600 ppb
2021-07-14ND
2021-10-201.000 ppb
2022-01-110.600 ppb
2022-04-202.00 ppb
2022-07-12ND
2022-09-121.20 ppb
2022-10-122.30 ppb
2023-01-121.60 ppb
2023-04-120.660 ppb
2023-07-18ND
2023-10-120.900 ppb