Know Your Environment. Protect Your Health.

Bromodichloromethane

City of Spokane

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.

 

60

Samples

0

Samples exceeding legal limit (MCL)

30

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.540 ppb116ND - 1.58 ppb
20190.262 ppb186ND - 1.07 ppb
2020N/A00N/A
20210.458 ppb116ND - 1.21 ppb
20220.467 ppb106ND - 1.03 ppb
20230.482 ppb106ND - 1.22 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
2018-01-30ND
2018-01-300.620 ppb
2018-01-30ND
2018-01-301.07 ppb
2018-05-101.04 ppb
2018-05-10ND
2018-07-17ND
2018-07-170.780 ppb
2018-07-17ND
2018-11-081.58 ppb
2018-11-080.850 ppb
2019-02-140.570 ppb
2019-02-140.880 ppb
2019-05-09ND
2019-05-090.790 ppb
2019-07-23ND
2019-07-23ND
2019-07-26ND
2019-07-26ND
2019-07-260.600 ppb
2019-07-26ND
2019-07-26ND
2019-07-26ND
2019-07-26ND
2019-07-26ND
2019-08-080.810 ppb
2019-08-08ND
2019-11-13ND
2019-11-131.07 ppb
2021-01-264066970ND
2021-01-264066969ND
2021-02-0940973561.21 ppb
2021-02-0940973580.660 ppb
2021-05-1341152890.800 ppb
2021-05-134115288ND
2021-07-274195356ND
2021-08-1141598150.600 ppb
2021-08-114159816ND
2021-11-1042038310.790 ppb
2021-11-1042038300.980 ppb
2022-02-1042440940.740 ppb
2022-02-1042440950.550 ppb
2022-05-124282306ND
2022-05-1242823050.950 ppb
2022-07-264319391ND
2022-07-264319393ND
2022-08-1143270160.700 ppb
2022-08-114327017ND
2022-11-1043730010.700 ppb
2022-11-1043730021.03 ppb
2023-01-244399432ND
2023-02-0944247000.760 ppb
2023-02-0944247010.500 ppb
2023-05-104452949ND
2023-05-1044529480.920 ppb
2023-07-254507772ND
2023-08-0344988190.630 ppb
2023-08-034498818ND
2023-11-0945476101.22 ppb
2023-11-0945476110.790 ppb