Know Your Environment. Protect Your Health.

Dibromochloromethane

Public Wholesale Water Supply District 11

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

24

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.11 ppb440.650 ppb - 1.80 ppb
20191.08 ppb440.530 ppb - 1.50 ppb
20200.985 ppb440.710 ppb - 1.30 ppb
20210.843 ppb440.660 ppb - 1.000 ppb
20221.43 ppb441.30 ppb - 1.70 ppb
20232.43 ppb441.70 ppb - 3.20 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
2018-01-239085680.700 ppb
2018-04-239385880.650 ppb
2018-07-0910033361.30 ppb
2018-10-1510615411.80 ppb
2019-01-2111082891.40 ppb
2019-04-2211399131.50 ppb
2019-07-2912128050.870 ppb
2019-10-2112627170.530 ppb
2020-01-2013122320.830 ppb
2020-04-2713637030.710 ppb
2020-07-2014509681.30 ppb
2020-10-1916071321.10 ppb
2021-01-1117416150.970 ppb
2021-04-1318182470.660 ppb
2021-07-0618752630.740 ppb
2021-10-2620053341.000 ppb
2022-01-0321079461.30 ppb
2022-04-0522313831.30 ppb
2022-07-1223016091.70 ppb
2022-10-1123782961.40 ppb
2023-01-0924295521.70 ppb
2023-04-1024815502.10 ppb
2023-07-1225352653.20 ppb
2023-10-0925898482.70 ppb