Know Your Environment. Protect Your Health.

Dibromochloromethane

Waterproof Water System

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.

 

64

Samples

0

Samples exceeding legal limit (MCL)

4

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.0325 ppb162ND - 0.260 ppb
2019ND160ND
20200.0688 ppb81ND - 0.550 ppb
2021ND80ND
2022ND80ND
20230.0600 ppb81ND - 0.480 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
2018-03-0135377859001ND
2018-03-0135377859002ND
2018-03-0135377859002ND
2018-03-0135377859001ND
2018-06-19353998650020.260 ppb
2018-06-1935399865001ND
2018-06-19353998650020.260 ppb
2018-06-1935399865001ND
2018-09-1035417621001ND
2018-09-1035417621002ND
2018-09-1035417621001ND
2018-09-1035417621002ND
2018-12-1035437322001ND
2018-12-1035437322001ND
2018-12-1035437322002ND
2018-12-1035437322002ND
2019-03-1135454262001ND
2019-03-1135454262002ND
2019-03-1135454262001ND
2019-03-1135454262002ND
2019-06-1235475539001ND
2019-06-1235475539002ND
2019-06-1235475539001ND
2019-06-1235475539002ND
2019-09-1735499533002ND
2019-09-1735499533001ND
2019-09-1735499533001ND
2019-09-1735499533002ND
2019-12-1335518934001ND
2019-12-1335518934002ND
2019-12-1335518934002ND
2019-12-1335518934001ND
2020-03-0235535626002ND
2020-03-0235535626001ND
2020-06-2435559211001ND
2020-06-2435559211002ND
2020-09-2435580584001ND
2020-09-2435580584002ND
2020-12-11355988940010.550 ppb
2020-12-1135598894002ND
2021-03-1235620343001ND
2021-03-1235620343002ND
2021-06-2535643816001ND
2021-06-2535643816002ND
2021-09-1735665794001ND
2021-09-1735665794002ND
2021-12-1335685712001ND
2021-12-1335685712002ND
2022-03-2935706842002ND
2022-03-2935706842001ND
2022-06-2235727840002ND
2022-06-2235727840001ND
2022-09-1235747934001ND
2022-09-1235747934002ND
2022-12-0535766667001ND
2022-12-0535766667002ND
2023-03-2035788123001ND
2023-03-2035788123002ND
2023-06-1235806369001ND
2023-06-1235806369002ND
2023-09-2235830310001ND
2023-09-2235830310002ND
2023-12-14358498340010.480 ppb
2023-12-1435849834002ND