Know Your Environment. Protect Your Health.

Bromate

Four Way Special Utility 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.

 

145

Samples

3

Samples exceeding legal limit (MCL)

5

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND240ND
2019ND240ND
20200.652 ppb252ND - 10.8 ppb
2021ND240ND
20220.664 ppb242ND - 10.3 ppb
20230.504 ppb241ND - 12.1 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
2018-01-011650112ND
2018-01-011650113ND
2018-02-051659155ND
2018-02-051659156ND
2018-03-051666596ND
2018-03-051666597ND
2018-04-021673480ND
2018-04-021673481ND
2018-05-011680972ND
2018-05-011680973ND
2018-06-041689880ND
2018-06-041689881ND
2018-07-021698944ND
2018-07-021698947ND
2018-08-011707016ND
2018-08-011707017ND
2018-09-021714177ND
2018-09-131714178ND
2018-10-011722554ND
2018-10-011722555ND
2018-11-051732640ND
2018-11-051732641ND
2018-12-031739980ND
2018-12-031739981ND
2019-01-031747974ND
2019-01-031747975ND
2019-02-041756188ND
2019-02-041756189ND
2019-03-041763729ND
2019-03-041763730ND
2019-04-011771594ND
2019-04-011771595ND
2019-05-071781493ND
2019-05-201781492ND
2019-06-041788676ND
2019-06-041788677ND
2019-07-011797718ND
2019-07-011797719ND
2019-08-051807006ND
2019-08-051807007ND
2019-09-031816343ND
2019-09-031816344ND
2019-10-011825100ND
2019-10-011825101ND
2019-11-051835110ND
2019-11-051835111ND
2019-12-031842787ND
2019-12-031842788ND
2020-01-06185174710.8 ppb
2020-01-061851748ND
2020-01-061853826ND
2020-02-031859860ND
2020-02-031859861ND
2020-03-021867570ND
2020-03-021867571ND
2020-04-061877498ND
2020-04-061877499ND
2020-05-041884730ND
2020-05-041884731ND
2020-06-011892342ND
2020-06-011892343ND
2020-07-061901966ND
2020-07-061901968ND
2020-08-031910135ND
2020-08-031910136ND
2020-09-081919764ND
2020-09-081919765ND
2020-10-0519288135.49 ppb
2020-10-051928814ND
2020-11-031936406ND
2020-11-031936407ND
2020-12-011943190ND
2020-12-011943191ND
2021-01-041951801ND
2021-01-041951802ND
2021-02-081961530ND
2021-02-081961531ND
2021-03-031968315ND
2021-03-031968316ND
2021-04-051975550ND
2021-04-051975551ND
2021-05-031984005ND
2021-05-031984006ND
2021-06-071993802ND
2021-06-071993803ND
2021-07-062001684ND
2021-07-062001685ND
2021-08-022010069ND
2021-08-022010071ND
2021-09-032020472ND
2021-09-032020473ND
2021-10-042028783ND
2021-10-042028784ND
2021-11-012037031ND
2021-11-012037032ND
2021-12-062046407ND
2021-12-062046408ND
2022-01-032053423ND
2022-01-032053425ND
2022-02-012061682ND
2022-02-012061683ND
2022-03-012069663ND
2022-03-012069664ND
2022-04-042079736ND
2022-04-042079737ND
2022-05-022087761ND
2022-05-022087762ND
2022-06-062097135ND
2022-06-062097136ND
2022-07-01210470710.3 ppb
2022-07-0121047085.63 ppb
2022-08-012112778ND
2022-08-012112779ND
2022-09-062123246ND
2022-09-062123247ND
2022-10-032131503ND
2022-10-032131504ND
2022-11-012139919ND
2022-11-012139920ND
2022-12-052149548ND
2022-12-052149549ND
2023-01-032157177ND
2023-01-032157178ND
2023-02-062167332ND
2023-02-062167333ND
2023-03-062175863ND
2023-03-062175864ND
2023-04-03218426212.1 ppb
2023-04-032184263ND
2023-05-012192721ND
2023-05-012192722ND
2023-06-052202113ND
2023-06-052202115ND
2023-07-102212079ND
2023-07-102212080ND
2023-08-012218493ND
2023-08-012218494ND
2023-09-012227727ND
2023-09-012227728ND
2023-10-032236443ND
2023-10-032236444ND
2023-11-062245963ND
2023-11-062245964ND
2023-12-042253102ND
2023-12-042253103ND