Know Your Environment. Protect Your Health.

Bromodichloromethane

Ferndale

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

16

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.70 ppb221.60 ppb - 1.80 ppb
20191.20 ppb221.000 ppb - 1.40 ppb
2020N/A00N/A
20210.440 ppb108ND - 0.900 ppb
20220.800 ppb220.800 ppb
20231.10 ppb221.000 ppb - 1.20 ppb

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
2018-07-031.60 ppb
2018-07-031.80 ppb
2019-07-231.40 ppb
2019-07-231.000 ppb
2021-03-2641255140.500 ppb
2021-03-2641255140.500 ppb
2021-06-0841325320.500 ppb
2021-06-0841325320.500 ppb
2021-07-0141372870.900 ppb
2021-07-0141372890.500 ppb
2021-09-014179031ND
2021-09-014179031ND
2021-10-0141922370.500 ppb
2021-10-0141922370.500 ppb
2022-07-0743094140.800 ppb
2022-07-0743094120.800 ppb
2023-07-1144855101.000 ppb
2023-07-1144913221.20 ppb