Know Your Environment. Protect Your Health.

Bromate

Bangor Water District

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.

 

25

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND40ND
2020ND50ND
2021ND40ND
2022ND40ND
2023ND40ND

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 Lab ID Result
2018-01-22201801230527ND
2018-04-18201804190406ND
2018-07-10201807130240ND
2018-10-24201810250444ND
2019-01-30201901310235ND
2019-04-09201904100411ND
2019-07-17201907190378ND
2019-10-21201910220444ND
2020-01-21202001230502ND
2020-04-21202004220882ND
2020-07-22202007230618ND
2020-11-032011040534ND
2020-11-03202011040534ND
2021-01-19202101200503ND
2021-04-26202104270425ND
2021-07-13202107141453ND
2021-11-10202111110781ND
2022-02-28202203030066ND
2022-05-23202205250929ND
2022-08-24380-18462-1ND
2022-10-25380-25882-1ND
2023-03-13380-40379-1ND
2023-05-03380-46065-1ND
2023-07-10380-54272-1ND
2023-11-14380-71488-1ND