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Bromate

Charleston

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.

 

28

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20100.150 ppb81ND - 1.20 ppb
20110.950 ppb43ND - 1.40 ppb
20122.10 ppb441.20 ppb - 3.10 ppb
2013ND40ND
20140.625 ppb42ND - 1.30 ppb
20151.95 ppb441.000 ppb - 3.20 ppb

ppb = parts per billion.

State and national drinking water standards and health guidelines

Health Guideline 0.1 ppb

The 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.

ppb = parts per billion.

EPA Maximum Contaminant
Level (MCL) 10 ppb

The enforceable federal standard that defines the highest level of a contaminant allowed in drinking water.

ppb = parts per billion.

EPA Maximum Contaminant
Level Goal (MCLG)0 ppb

A non-enforceable federal health guideline. For cancer-causing chemicals, these health goals are typically set to zero.

ppb = parts per billion.

All test results

Date Lab ID Result
2010-01-1310012161-1ND
2010-02-0410021749-2ND
2010-03-0410031701-1ND
2010-04-0110041124-1ND
2010-05-0610051799-1ND
2010-06-032276561ND
2010-07-0810072028-11.20 ppb
2010-10-0710101944-1ND
2011-02-0924040831.40 ppb
2011-04-051040547-01ND
2011-07-071070972-011.10 ppb
2011-10-041100354-011.30 ppb
2012-01-042010469-011.20 ppb
2012-04-052040959-012.10 ppb
2012-08-022080582-012.00 ppb
2012-10-012101013-013.10 ppb
2013-01-032761668ND
2013-04-022804094ND
2013-07-183072914-01ND
2013-10-033100847-01ND
2014-01-154011889-01ND
2014-04-034040826-01ND
2014-07-104071890-011.30 ppb
2014-10-024100541-011.20 ppb
2015-01-155012191-011.000 ppb
2015-04-095041764-012.10 ppb
2015-07-095071808-013.20 ppb
2015-10-015100241-011.50 ppb