Know Your Environment. Protect Your Health.

Bromate

Wilshire Heights Mutual Water Company

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)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND40ND
2020ND40ND
2021ND20ND
20220.300 ppb41ND - 1.20 ppb
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
2018-08-02CA4900573_DST_005-201808020945ND
2018-11-14CA4900573_DST_005-201811140900ND
2019-02-11CA4900573_DST_005-201902110930ND
2019-05-09CA4900573_DST_005-201905090820ND
2019-08-06CA4900573_DST_005-201908060935ND
2019-11-14CA4900573_DST_005-201911140900ND
2020-02-04CA4900573_DST_005-202002041015ND
2020-05-13CA4900573_DST_005-202005130925ND
2020-08-18CA4900573_DST_005-202008180901ND
2020-11-11CA4900573_DST_005-202011111200ND
2021-02-12CA4900573_DST_005-202102121030ND
2021-05-11CA4900573_DST_005-202105111310ND
2022-02-08CA4900573_DST_005-2022020814001.20 ppb
2022-05-05CA4900573_DST_005-202205050840ND
2022-07-12CA4900573_DST_005-202207121030ND
2022-10-11CA4900573_DST_005-202210111013ND
2023-01-17CA4900573_DST_005-202301171250ND
2023-04-17CA4900573_DST_005-202304170915ND
2023-07-11CA4900573_DST_005-202307110845ND
2023-10-11CA4900573_DST_005-202310111225ND