Know Your Environment. Protect Your Health.

Dibromochloromethane

Spanaway Water Company

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.

 

21

Samples

0

Samples exceeding legal limit (MCL)

9

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.400 ppb52ND - 1.10 ppb
20190.162 ppb61ND - 0.970 ppb
2020N/A00N/A
20210.370 ppb52ND - 1.05 ppb
20220.687 ppb32ND - 1.17 ppb
20231.000 ppb220.760 ppb - 1.24 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
2018-03-070.900 ppb
2018-03-071.10 ppb
2018-09-25ND
2018-09-25ND
2018-09-25ND
2019-03-11ND
2019-03-110.970 ppb
2019-06-05ND
2019-06-05ND
2019-06-05ND
2019-06-06ND
2021-03-2340909821.05 ppb
2021-03-2340909810.800 ppb
2021-08-044157585ND
2021-08-044157571ND
2021-08-044157592ND
2022-03-0742580230.890 ppb
2022-03-0742580241.17 ppb
2022-06-074298830ND
2023-03-0844269520.760 ppb
2023-03-0844269511.24 ppb