Know Your Environment. Protect Your Health.

Bromate

Central Wy Regional Water System Jpb

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.

 

36

Samples

2

Samples exceeding legal limit (MCL)

33

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20184.23 ppb43ND - 8.60 ppb
2019N/A00N/A
20202.44 ppb54ND - 8.00 ppb
20216.00 ppb335.00 ppb - 7.90 ppb
20224.70 ppb1110ND - 7.60 ppb
20235.82 ppb13131.000 ppb - 16.0 ppb

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
2018-01-032018010402084.10 ppb
2018-02-072018020808704.20 ppb
2018-03-22201803240449ND
2018-03-222018032404488.60 ppb
2020-07-012020070203811.80 ppb
2020-07-02202007020380)ND
2020-08-112020081209201.30 ppb
2020-09-022020090301351.10 ppb
2020-09-022020090301368.00 ppb
2021-01-062021010700425.10 ppb
2021-02-032021020404017.90 ppb
2021-03-092021031007805.00 ppb
2022-04-062022040805156.20 ppb
2022-05-042022051303793.80 ppb
2022-06-08380-4268-1ND
2022-06-08380-4268-27.30 ppb
2022-07-06380-8719-15.60 ppb
2022-07-06380-8719-22.80 ppb
2022-08-03380-14889-24.20 ppb
2022-08-03380-14889-11.000 ppb
2022-10-05380-23284-17.60 ppb
2022-11-02380-26958-16.90 ppb
2022-12-07380-30727-16.30 ppb
2023-01-04380-33331-16.20 ppb
2023-02-01380-36461-16.00 ppb
2023-03-0180-39261-14.90 ppb
2023-04-12308-43756-116.0 ppb
2023-05-10380-47267-112.0 ppb
2023-06-07380-50657-16.10 ppb
2023-07-05380-53603-22.70 ppb
2023-07-05380-53603-19.60 ppb
2023-08-02380-57597-21.000 ppb
2023-10-04380-65748-21.80 ppb
2023-10-04380-65748-11.000 ppb
2023-11-08380-70522-17.30 ppb
2023-12-07380-73975-11.000 ppb