Know Your Environment. Protect Your Health.

Dibromochloromethane

West Sound Utility District #1

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)

10

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.725 ppb42ND - 1.60 ppb
20191.35 ppb221.30 ppb - 1.40 ppb
2020N/A00N/A
20212.60 ppb221.10 ppb - 4.10 ppb
20221.40 ppb221.40 ppb
20230.238 ppb112ND - 1.44 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
2018-07-06ND
2018-07-251.60 ppb
2018-07-251.30 ppb
2018-10-09ND
2019-07-121.30 ppb
2019-07-121.40 ppb
2021-07-1641592834.10 ppb
2021-07-1641592841.10 ppb
2022-09-2843612961.40 ppb
2022-09-2843612971.40 ppb
2023-05-174468282ND
2023-05-174468291ND
2023-05-174468290ND
2023-05-174468290ND
2023-05-174468292ND
2023-05-194468272ND
2023-05-194468272ND
2023-05-194468272ND
2023-05-194468273ND
2023-08-0945058161.44 ppb
2023-08-0945058191.18 ppb