Know Your Environment. Protect Your Health.

Bromodichloromethane

Connecticut Water Company - Amston Lake Division

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)

11

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.05 ppb52ND - 4.70 ppb
20191.93 ppb42ND - 5.10 ppb
20202.75 ppb21ND - 5.50 ppb
20210.750 ppb220.700 ppb - 0.800 ppb
20222.99 ppb330.580 ppb - 5.50 ppb
20232.25 ppb21ND - 4.50 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
2018-01-19BZ75818VOC1ND
2018-04-09CA16127VOC10.560 ppb
2018-07-23CA95518ND
2018-08-13CB097794.70 ppb
2018-11-15VOC1 200512952ND
2019-02-19VOC1 2005221112.60 ppb
2019-02-19VOC1 200522112ND
2019-04-08VOC1 200527488ND
2019-08-26DBP 2005462385.10 ppb
2020-08-14DBP 2005867745.50 ppb
2020-09-21VOC1 200590982ND
2021-01-06VOC1 2006029550.700 ppb
2021-08-16DBP 2006287390.800 ppb
2022-08-12CM042275.50 ppb
2022-09-23CM405312.90 ppb
2022-09-23CM405280.580 ppb
2023-08-16CO761194.50 ppb
2023-10-24CP33072ND