Know Your Environment. Protect Your Health.

Bromodichloromethane

Lake Forest Utility District

Bromodichloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromodichloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

 

19

Samples

0

Samples exceeding legal limit (MCL)

9

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.833 ppb32ND - 1.30 ppb
20191.37 ppb32ND - 2.40 ppb
20200.667 ppb31ND - 2.00 ppb
20211.20 ppb42ND - 2.90 ppb
20220.900 ppb32ND - 1.50 ppb
2023ND30ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.06 ppb

The EWG Health Guideline of 0.06 ppb for bromodichloromethane 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
2018-06-19AE307861.30 ppb
2018-06-19AE30802ND
2018-06-19AE307141.20 ppb
2019-09-05AE822582.40 ppb
2019-09-05AE822901.70 ppb
2019-09-05AE82304ND
2020-08-26AF253452.00 ppb
2020-10-26AF31920ND
2020-10-26AF31928ND
2021-03-08AF457061.90 ppb
2021-03-08AF45708ND
2021-04-19AF50507ND
2021-08-10AF655932.90 ppb
2022-07-21AG057301.20 ppb
2022-07-21AG05779ND
2022-12-12AG215021.50 ppb
2023-08-23AG53702ND
2023-08-23AG53719ND
2023-08-23AG53721ND