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EWG's Tap Water Database — 2019 UPDATE

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Bromate

South Central Regional Water District North Burleigh

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

9

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
2013ND40ND
2014ND40ND
20150.575 ppb42ND - 1.20 ppb
20162.18 ppb441.20 ppb - 3.20 ppb
20171.73 ppb43ND - 4.20 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

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
2012-03-05201203060214ND
2012-06-12201206140167ND
2012-09-11201209130195ND
2012-12-04201212050229ND
2013-03-25201303260378ND
2013-06-18201306190686ND
2013-09-23201309240465ND
2013-12-03201312050434ND
2014-02-25201402260879ND
2014-05-20201405210775ND
2014-08-18201408190768ND
2014-11-04201411050628ND
2015-02-09201502100401ND
2015-05-04201505050071ND
2015-08-172015081806491.20 ppb
2015-11-042015110504111.10 ppb
2016-02-102016021103421.70 ppb
2016-04-132016041402031.20 ppb
2016-08-082016080906873.20 ppb
2016-10-102016101114242.60 ppb
2017-02-082017020907561.30 ppb
2017-04-25201704260811ND
2017-08-022017080305854.20 ppb
2017-10-242017102504111.40 ppb