Know Your Environment. Protect Your Health.

Bromodichloromethane

Connecticut Correctional Institute

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.

 

17

Samples

0

Samples exceeding legal limit (MCL)

11

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20182.65 ppb220.700 ppb - 4.60 ppb
20192.34 ppb52ND - 11.0 ppb
20200.600 ppb21ND - 1.20 ppb
20213.10 ppb221.20 ppb - 5.00 ppb
20220.625 ppb42ND - 1.50 ppb
20232.10 ppb221.20 ppb - 3.00 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
2018-01-16308608GE0.700 ppb
2018-09-04105469GE 14.60 ppb
2019-01-22CC329200.680 ppb
2019-01-29CC35679ND
2019-01-29CC35682ND
2019-09-10CE0052911.0 ppb
2019-12-10330471GEND
2020-02-25CF37530ND
2020-09-30CG885401.20 ppb
2021-01-14CH464141.20 ppb
2021-09-14CJ276585.00 ppb
2022-02-08CK31864ND
2022-02-08CK31868ND
2022-09-13CM294611.50 ppb
2022-09-13CM294631.000 ppb
2023-09-19CP025663.00 ppb
2023-09-19CP025681.20 ppb