Know Your Environment. Protect Your Health.

Bromate

Littleton Water Department

Bromate is a carcinogenic disinfection byproduct formed when source waters containing bromide are treated with ozonation or sodium hypochlorite. Studies of laboratory animals show that bromate damages DNA and causes cancer in multiple organs. Click here to read more about disinfection byproducts.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND120ND
2019ND30ND
2020N/A00N/A
2021N/A00N/A
2022ND30ND
2023ND20ND

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 bromate was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

EPA Maximum Contaminant
Level (MCL): 10 ppb

The legal limit for bromate, established in 1998, was based on analytical detection limits at the time that the standard was set. This limit may not fully protect against the risk of cancer due to bromate exposure.

ppb = parts per billion

All test results

Date Result
2018-03-12ND
2018-03-12ND
2018-03-12ND
2018-06-19ND
2018-06-19ND
2018-06-19ND
2018-07-17ND
2018-07-17ND
2018-07-17ND
2018-10-23ND
2018-10-23ND
2018-10-23ND
2019-08-06ND
2019-08-06ND
2019-08-06ND
2022-06-29ND
2022-08-09ND
2022-11-01ND
2023-05-22ND
2023-10-04ND