Know Your Environment. Protect Your Health.

Dibromochloromethane

The Retreat Water Supply

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.

 

9

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.05 ppb111.05 ppb
20190.810 ppb21ND - 1.62 ppb
2020ND10ND
2021ND10ND
2022ND20ND
20230.880 ppb21ND - 1.76 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
2018-12-13Q18513780011.05 ppb
2019-09-25Q19689090011.62 ppb
2019-10-29Q1974342003ND
2020-11-03Q2042992002ND
2021-09-30Q2126883001ND
2022-09-26Q2228774007ND
2022-09-26Q2228774009ND
2023-07-10Q2326568001ND
2023-07-10Q23265680061.76 ppb