Know Your Environment. Protect Your Health.

Dibromochloromethane

Cheney, City 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.

 

22

Samples

0

Samples exceeding legal limit (MCL)

7

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND60ND
20190.513 ppb32ND - 0.800 ppb
2020N/A00N/A
2021ND30ND
20220.130 ppb41ND - 0.520 ppb
20231.14 ppb64ND - 2.16 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
2018-04-26ND
2018-05-30ND
2018-05-30ND
2018-07-13ND
2018-08-21ND
2018-08-21ND
2019-01-08ND
2019-08-230.800 ppb
2019-08-230.740 ppb
2021-07-274159877ND
2021-08-104159808ND
2021-08-104159809ND
2022-06-224304279ND
2022-08-164508284ND
2022-08-1645082860.520 ppb
2022-09-274373028ND
2023-03-2944401502.04 ppb
2023-03-2944401522.16 ppb
2023-03-2944401511.28 ppb
2023-03-2944401531.33 ppb
2023-06-074480411ND
2023-09-064512984ND