Know Your Environment. Protect Your Health.

Bromate

Twin Creeks Special Service 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.

 

21

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
2021N/A00N/A
2022ND90ND
2023ND120ND

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
2022-04-06ND
2022-05-11ND
2022-06-16ND
2022-07-13ND
2022-08-22ND
2022-09-07ND
2022-10-06ND
2022-11-01ND
2022-12-06ND
2023-01-12ND
2023-02-08ND
2023-03-06ND
2023-04-04ND
2023-05-02ND
2023-06-12ND
2023-07-19ND
2023-08-16ND
2023-09-06ND
2023-10-05ND
2023-11-01ND
2023-12-12ND