Know Your Environment. Protect Your Health.

Bromodichloromethane

East Montana 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.

 

48

Samples

0

Samples exceeding legal limit (MCL)

21

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20188.17 ppb84ND - 23.4 ppb
20196.92 ppb84ND - 31.6 ppb
20208.68 ppb84ND - 31.9 ppb
20215.41 ppb82ND - 22.3 ppb
20225.16 ppb82ND - 22.1 ppb
20239.13 ppb85ND - 26.3 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
2018-01-10Q1801267003ND
2018-01-10Q1801267002ND
2018-04-03Q181399300221.9 ppb
2018-04-03Q181399300111.0 ppb
2018-07-11Q18277670019.07 ppb
2018-07-11Q182776700223.4 ppb
2018-10-31Q1843806001ND
2018-10-31Q1843806002ND
2019-01-22Q1903666002ND
2019-01-22Q1903666003ND
2019-05-16Q1926410001ND
2019-05-16Q1926410002ND
2019-08-23Q195976400210.00 ppb
2019-08-23Q19597640011.73 ppb
2019-10-15Q197295900112.0 ppb
2019-10-15Q197295900231.6 ppb
2020-01-30Q2003940001ND
2020-01-30Q2003940002ND
2020-04-15Q20149690018.59 ppb
2020-04-15Q201496900220.9 ppb
2020-07-16Q20280050018.04 ppb
2020-07-16Q202800500231.9 ppb
2020-11-18Q2045863001ND
2020-11-19Q2046261001ND
2021-01-06Q2100406002ND
2021-01-06Q2100406003ND
2021-04-15Q2109770001ND
2021-04-15Q2109770002ND
2021-07-20Q211888700121.0 ppb
2021-07-20Q211888700222.3 ppb
2021-11-01Q2130862001ND
2021-11-01Q2130862002ND
2022-01-20Q2202156002ND
2022-01-20Q2202156003ND
2022-04-11Q2211124001ND
2022-04-11Q2211124002ND
2022-08-18Q222459400119.2 ppb
2022-08-18Q222459400222.1 ppb
2022-11-02Q2233267001ND
2022-11-02Q2233267002ND
2023-02-13Q2305504002ND
2023-02-13Q2305504003ND
2023-05-11Q2318038002ND
2023-06-27Q232504400122.3 ppb
2023-08-08Q233226100121.9 ppb
2023-08-08Q233226100226.3 ppb
2023-11-13Q23484170011.33 ppb
2023-11-13Q23484170021.21 ppb