Know Your Environment. Protect Your Health.

Dibromochloromethane

Sweetwater Utility Board

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.

 

65

Samples

0

Samples exceeding legal limit (MCL)

12

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.824 ppb110.824 ppb
20190.662 ppb110.662 ppb
2020N/A00N/A
20210.296 ppb175ND - 1.22 ppb
20220.0738 ppb212ND - 1.03 ppb
20230.121 ppb253ND - 1.18 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
2018-04-100.824 ppb
2019-07-150.662 ppb
2021-02-10ND
2021-02-10ND
2021-02-10ND
2021-02-10ND
2021-05-030.645 ppb
2021-05-051.03 ppb
2021-05-051.06 ppb
2021-05-05ND
2021-05-05ND
2021-08-18ND
2021-08-18ND
2021-08-18ND
2021-08-181.22 ppb
2021-11-17ND
2021-11-171.07 ppb
2021-11-17ND
2021-11-17ND
2022-02-09ND
2022-02-09ND
2022-02-09ND
2022-02-09ND
2022-02-09ND
2022-02-09ND
2022-02-09ND
2022-02-09ND
2022-04-040.520 ppb
2022-05-11ND
2022-05-11ND
2022-05-11ND
2022-05-11ND
2022-08-10ND
2022-08-10ND
2022-08-10ND
2022-08-101.03 ppb
2022-11-02ND
2022-11-02ND
2022-11-02ND
2022-11-02ND
2023-02-01ND
2023-02-01ND
2023-02-01ND
2023-02-01ND
2023-02-01ND
2023-02-01ND
2023-02-01ND
2023-02-01ND
2023-02-01ND
2023-02-01ND
2023-02-01ND
2023-02-01ND
2023-05-03ND
2023-05-03ND
2023-05-031.18 ppb
2023-05-03ND
2023-05-080.665 ppb
2023-08-02ND
2023-08-021.18 ppb
2023-08-02ND
2023-08-02ND
2023-11-01ND
2023-11-01ND
2023-11-01ND
2023-11-01ND