Know Your Environment. Protect Your Health.

Dibromochloromethane

Markridge Park Subdivision Water System

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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

10

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
20190.610 ppb440.540 ppb - 0.680 ppb
20200.625 ppb220.540 ppb - 0.710 ppb
2021ND20ND
20220.750 ppb220.700 ppb - 0.800 ppb
20234.00 ppb223.50 ppb - 4.50 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
2018-08-1635412027001ND
2018-08-1635412027002ND
2018-08-1635412027001ND
2018-08-1635412027002ND
2019-08-08354890020010.680 ppb
2019-08-08354890020020.540 ppb
2019-08-08354890020010.680 ppb
2019-08-08354890020020.540 ppb
2020-08-14355708890010.710 ppb
2020-08-14355708890020.540 ppb
2021-08-0235652760001ND
2021-08-0235652760002ND
2022-08-26357429770010.700 ppb
2022-08-26357429770020.800 ppb
2023-08-15358219850013.50 ppb
2023-08-15358219850024.50 ppb