Know Your Environment. Protect Your Health.

Bromate

Medford Water Commission

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.

 

44

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND80ND
2020ND110ND
2021ND90ND
2022ND50ND
2023ND70ND

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
2018-05-15180563001BND
2018-08-01180805801BND
2018-09-04180903101BND
2018-10-02181010401BND
2019-05-071905028202CND
2019-06-041906010002CND
2019-07-091907034502AND
2019-08-011908004402AND
2019-09-041909016002AND
2019-10-031910020802AND
2019-10-031910020802ND
2019-11-011911004802ND
2020-04-152004051703ND
2020-05-112005037902ND
2020-05-112005037902BND
2020-06-032006016002BND
2020-07-082007030702BND
2020-07-082007030702ND
2020-08-042008005702ND
2020-09-032009019102ND
2020-10-062010026402BND
2020-10-062010026402ND
2020-11-042011019102ND
2021-04-082104042002BND
2021-05-072105042702BND
2021-06-042106031202BND
2021-07-082107032402ND
2021-08-102108048502B-BND
2021-08-102108048502BND
2021-09-082109031102-BND
2021-09-082109031102C-BND
2021-10-072110027102-BND
2022-06-0622060264-02-BND
2022-07-0522070068-02-BND
2022-09-1522090757-03-BND
2022-09-1522090757-03B-BND
2022-10-0622100263-03-BND
2023-04-2823041128-02A-BND
2023-05-1623050724-02A-BND
2023-06-1523060762-02A-BND
2023-07-1823070746-02A-BND
2023-08-1723080898-02A-BND
2023-09-1223090429-02A-BND
2023-10-0423100194-02A-BND