Know Your Environment. Protect Your Health.

Bromoform

Lake Delton Waterworks

Bromoform, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromoform 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)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
20200.0713 ppb81ND - 0.570 ppb
2021ND20ND
2022ND10ND
20230.0500 ppb61ND - 0.300 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.5 ppb

The EWG Health Guideline of 0.5 ppb for bromoform is 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, harm to reproduction and child development, and change to fetal growth and development .

ppb = parts per billion

All test results

Date Lab ID Result
2018-07-181068356ND
2019-07-221135981ND
2020-04-20409868ND
2020-05-28424672ND
2020-05-28424675ND
2020-05-28424681ND
2020-06-02426799ND
2020-06-02426789ND
2020-06-024267860.570 ppb
2020-07-08442787ND
2021-01-20526112ND
2021-07-201027786ND
2022-07-141163875ND
2023-03-201301274ND
2023-03-201301276ND
2023-04-191316618ND
2023-04-201316620ND
2023-04-201316622ND
2023-07-1713492670.300 ppb