Know Your Environment. Protect Your Health.

Dibromochloromethane

North Perry Ave Water District

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.

 

23

Samples

0

Samples exceeding legal limit (MCL)

14

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.288 ppb83ND - 1.14 ppb
20191.69 ppb221.30 ppb - 2.07 ppb
2020N/A00N/A
20211.13 ppb330.620 ppb - 1.78 ppb
20220.407 ppb73ND - 1.17 ppb
20231.14 ppb330.810 ppb - 1.59 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
2018-07-25ND
2018-07-25ND
2018-07-25ND
2018-07-25ND
2018-07-25ND
2018-08-151.14 ppb
2018-08-150.660 ppb
2018-08-150.500 ppb
2019-08-132.07 ppb
2019-08-131.30 ppb
2021-08-0541634421.78 ppb
2021-08-0541634430.980 ppb
2021-08-0541634440.620 ppb
2022-08-264366541ND
2022-08-2643656681.000 ppb
2022-08-2643656690.680 ppb
2022-08-2643656701.17 ppb
2022-08-264366547ND
2022-08-264366542ND
2022-08-264366550ND
2023-08-1645295000.810 ppb
2023-08-1645258401.03 ppb
2023-08-1645258411.59 ppb