Know Your Environment. Protect Your Health.

Dibromochloromethane

City of Oak Harbor

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.

 

42

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND80ND
2019ND90ND
2020N/A00N/A
2021ND100ND
20220.275 ppb81ND - 2.20 ppb
2023ND70ND

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
2018-03-08ND
2018-03-08ND
2018-06-19ND
2018-06-19ND
2018-09-18ND
2018-09-18ND
2018-12-11ND
2018-12-11ND
2019-03-19ND
2019-03-19ND
2019-04-23ND
2019-06-18ND
2019-06-18ND
2019-09-10ND
2019-09-10ND
2019-12-26ND
2019-12-26ND
2021-03-164090643ND
2021-03-164090645ND
2021-04-224106993ND
2021-04-224106994ND
2021-06-104163722ND
2021-06-104163725ND
2021-09-094174210ND
2021-09-094174208ND
2021-12-144220432ND
2021-12-144220435ND
2022-03-084256710ND
2022-03-084256712ND
2022-06-094302588ND
2022-06-0943025902.20 ppb
2022-09-134365786ND
2022-09-134365779ND
2022-12-154397579ND
2022-12-154397577ND
2023-03-214432439ND
2023-03-214432437ND
2023-06-134468868ND
2023-06-134468876ND
2023-09-144523180ND
2023-09-144523185ND
2023-12-124562350ND