Know Your Environment. Protect Your Health.

Bromodichloromethane

Southeast Grant 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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

7

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.365 ppb440.250 ppb - 0.480 ppb
2019ND40ND
2020ND20ND
20211.35 ppb221.30 ppb - 1.40 ppb
20220.340 ppb21ND - 0.680 ppb
2023ND20ND

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
2018-06-13353985810010.250 ppb
2018-06-13353985810020.480 ppb
2018-06-13353985810010.250 ppb
2018-06-13353985810020.480 ppb
2019-06-2435478197001ND
2019-06-2435478197002ND
2019-06-2435478197001ND
2019-06-2435478197002ND
2020-06-0235554430001ND
2020-06-0235554430002ND
2021-06-22356433090011.30 ppb
2021-06-22356433090021.40 ppb
2022-06-0935725749001ND
2022-06-09357257490020.680 ppb
2023-06-2735809728001ND
2023-06-2735809728002ND