Know Your Environment. Protect Your Health.

Dibromochloromethane

Lake Delton Waterworks

Dibromochloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Dibromochloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

 

19

Samples

0

Samples exceeding legal limit (MCL)

5

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
20190.430 ppb110.430 ppb
20200.234 ppb82ND - 1.30 ppb
20210.290 ppb21ND - 0.580 ppb
2022ND10ND
20230.102 ppb61ND - 0.610 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.1 ppb

The EWG Health Guideline of 0.1 ppb for dibromochloromethane 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
2018-07-181068356ND
2019-07-2211359810.430 ppb
2020-04-20409868ND
2020-05-28424672ND
2020-05-28424675ND
2020-05-28424681ND
2020-06-02426799ND
2020-06-02426789ND
2020-06-024267861.30 ppb
2020-07-084427870.570 ppb
2021-01-20526112ND
2021-07-2010277860.580 ppb
2022-07-141163875ND
2023-03-201301274ND
2023-03-201301276ND
2023-04-191316618ND
2023-04-201316620ND
2023-04-201316622ND
2023-07-1713492670.610 ppb