Know Your Environment. Protect Your Health.

Bromoform

King County Water District 111

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.

 

28

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND20ND
2020N/A00N/A
2021ND80ND
2022ND80ND
2023ND80ND

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
2018-11-07ND
2018-11-07ND
2019-10-16ND
2019-10-16ND
2021-03-234090980ND
2021-03-234090979ND
2021-05-244126093ND
2021-05-244126094ND
2021-08-034159316ND
2021-08-034159317ND
2021-11-084206499ND
2021-11-084206498ND
2022-02-074241809ND
2022-02-074241811ND
2022-05-204286836ND
2022-05-204286835ND
2022-08-084363899ND
2022-08-084363901ND
2022-11-024374928ND
2022-11-024374930ND
2023-02-094411910ND
2023-02-094411911ND
2023-05-174455224ND
2023-05-174455225ND
2023-09-064516777ND
2023-09-064516778ND
2023-11-084548847ND
2023-11-084548848ND