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EWG's Tap Water Database — 2019 UPDATE

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Bromate

North Texas Municipal Water District Tawakoni Water Treatment Plant

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.

 

57

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013ND90ND
2014ND120ND
2015ND120ND
2016ND120ND
2017ND120ND

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
2013-01-052925237ND
2013-03-162788811ND
2013-04-022802562ND
2013-05-072820572ND
2013-06-042836262ND
2013-07-022851866ND
2013-08-062871650ND
2013-10-082910350ND
2013-12-032939500ND
2014-01-072954413ND
2014-02-032968285ND
2014-03-042986364ND
2014-04-013000990ND
2014-05-133025350ND
2014-06-103041932ND
2014-07-083058987ND
2014-08-193086586ND
2014-09-023095790ND
2014-10-143122274ND
2014-11-113137342ND
2014-12-093152465ND
2015-01-133169149ND
2015-02-103185193ND
2015-03-103202870ND
2015-04-143224286ND
2015-05-123241218ND
2015-06-093258408ND
2015-07-143279667ND
2015-08-113298501ND
2015-09-083317060ND
2015-10-133340733ND
2015-11-103356919ND
2015-12-123375036ND
2016-01-123385181ND
2016-02-093398316ND
2016-03-083411688ND
2016-04-123429363ND
2016-05-103446021ND
2016-06-143471278ND
2016-07-123492158ND
2016-08-093516340ND
2016-09-133544397ND
2016-10-113562774ND
2016-11-153586788ND
2016-12-133604287ND
2017-01-103618983ND
2017-02-143637869ND
2017-03-143654208ND
2017-04-113672167ND
2017-05-093691063ND
2017-06-133713091ND
2017-07-113730395ND
2017-08-083752180ND
2017-09-123777078ND
2017-10-103797140ND
2017-11-143821355ND
2017-12-123836832ND