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Bromate

Clarksville Waterworks

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.

 

72

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20101.08 ppb124ND - 4.20 ppb
20111.43 ppb124ND - 5.60 ppb
20125.73 ppb129ND - 15.0 ppb
20132.18 ppb126ND - 6.60 ppb
20141.000 ppb124ND - 4.00 ppb
20152.28 ppb126ND - 6.70 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
2010-01-04100070005ND
2010-02-04100360009ND
2010-03-04100640010ND
2010-04-07100980018ND
2010-05-03101260003ND
2010-06-031015400263.50 ppb
2010-07-06101890015ND
2010-08-021021700233.20 ppb
2010-09-08102520008ND
2010-10-05102800016ND
2010-11-021030800164.20 ppb
2010-12-071034300212.00 ppb
2011-01-041100700174.00 ppb
2011-02-021103400285.60 ppb
2011-03-01110620025ND
2011-04-06110970055ND
2011-05-03111260006ND
2011-06-07111600025ND
2011-07-05111880034ND
2011-08-02112160040ND
2011-09-081125100274.50 ppb
2011-10-06112790012ND
2011-11-02113070025ND
2011-12-061134200053.00 ppb
2012-01-04120060031ND
2012-02-01120340006ND
2012-03-06120680017ND
2012-04-031209600443.20 ppb
2012-05-021212400483.30 ppb
2012-06-051215900487.30 ppb
2012-07-0312187002510.00 ppb
2012-08-011221500469.50 ppb
2012-09-0412250001315.0 ppb
2012-10-031227800359.80 ppb
2012-11-051231200107.70 ppb
2012-12-041234000072.90 ppb
2013-01-03130040015ND
2013-02-05130380007ND
2013-03-04130660020ND
2013-04-01130940056ND
2013-05-071312800052.10 ppb
2013-06-04131570023ND
2013-07-01131840029ND
2013-08-051322000136.30 ppb
2013-09-041324800234.60 ppb
2013-10-011327700084.30 ppb
2013-11-041331000476.60 ppb
2013-12-021333800392.30 ppb
2014-01-09140090023ND
2014-02-12140440025ND
2014-03-10140720037ND
2014-04-02140920015ND
2014-05-051412800342.60 ppb
2014-06-03141560023ND
2014-07-01141840023ND
2014-08-05142190061ND
2014-09-041424700192.40 ppb
2014-10-01Y1427500084.00 ppb
2014-11-03Y1431000433.00 ppb
2014-12-02Y143380051ND
2015-01-05Y150080042ND
2015-02-02Y150370013ND
2015-03-03Y150630014ND
2015-04-01Y150920020ND
2015-05-05Y151270015ND
2015-06-02Y1515500372.40 ppb
2015-07-01Y1518300082.70 ppb
2015-08-05Y1521800626.20 ppb
2015-09-02Y1524600056.70 ppb
2015-10-05Y1528200445.10 ppb
2015-11-02Y1531000264.20 ppb
2015-12-01Y153370053ND