Know Your Environment. Protect Your Health.

Bromoform

Colville Water Department

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND30ND
2020N/A00N/A
2021ND20ND
2022ND40ND
2023ND70ND

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
2018-08-27ND
2018-08-27ND
2019-08-28ND
2019-08-28ND
2019-09-23ND
2021-08-264174218ND
2021-08-264174219ND
2022-08-024328652ND
2022-12-124385135ND
2022-12-124385134ND
2022-12-124385131ND
2023-03-234429205ND
2023-06-224480388ND
2023-08-234542894ND
2023-08-234542895ND
2023-09-284542957ND
2023-10-264539606ND
2023-10-264575180ND