Know Your Environment. Protect Your Health.

Bromodichloromethane

Highway 1148 Water System

Bromodichloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromodichloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

 

18

Samples

0

Samples exceeding legal limit (MCL)

12

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND60ND
20190.640 ppb440.600 ppb - 0.680 ppb
20200.710 ppb220.670 ppb - 0.750 ppb
20210.620 ppb220.580 ppb - 0.660 ppb
20220.635 ppb220.510 ppb - 0.760 ppb
20230.930 ppb220.900 ppb - 0.960 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.06 ppb

The EWG Health Guideline of 0.06 ppb for bromodichloromethane 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
2018-08-1635412004002ND
2018-08-1635412004001ND
2018-08-1635412004002ND
2018-08-1635412004001ND
2018-09-0535416156001ND
2018-09-0535416156001ND
2019-08-09354890440020.600 ppb
2019-08-09354890440020.600 ppb
2019-08-09354890440010.680 ppb
2019-08-09354890440010.680 ppb
2020-08-05355692010010.750 ppb
2020-08-05355692010020.670 ppb
2021-08-04356543040010.660 ppb
2021-08-04356543040020.580 ppb
2022-08-02357369690030.760 ppb
2022-08-02357369690040.510 ppb
2023-08-09358198680010.960 ppb
2023-08-09358198680020.900 ppb