Know Your Environment. Protect Your Health.

Bromodichloromethane

Roosevelt County Water Users Association

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

8

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.82 ppb21ND - 3.63 ppb
20190.585 ppb21ND - 1.17 ppb
20200.691 ppb220.553 ppb - 0.828 ppb
2021ND20ND
20221.07 ppb220.630 ppb - 1.50 ppb
20231.12 ppb220.681 ppb - 1.55 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
2018-09-111809757-0013.63 ppb
2018-09-111809758-001ND
2019-09-091909550-0011.17 ppb
2019-09-091909551-001ND
2020-09-142009898-0010.828 ppb
2020-09-142009899-0010.553 ppb
2022-09-152209804-0010.630 ppb
2022-09-152209805-0011.50 ppb
2023-09-072309404-0010.681 ppb
2023-09-072309406-0011.55 ppb