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EWG's Tap Water Database

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Benzo[a]pyrene

Clearwater Water System

Benzo[a]pyrene is a polycyclic aromatic hydrocarbon, or PAH, released from combustion of fossil fuels and waste incinerators. PAHs increase the risk of cancer; damage the immune, nervous and reproductive systems; and can harm developing fetuses.

 

28

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010ND60ND
2011ND60ND
2012ND60ND
2013ND30ND
2014ND30ND
2015ND40ND

ppb = parts per billion.

State and national drinking water standards and health guidelines

Health Guideline 0.007 ppb

The health guideline of 0.007 ppb for benzo[a]pyrene 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) 0.2 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 Result
2010-02-10ND
2010-02-10ND
2010-02-11ND
2010-08-17ND
2010-08-17ND
2010-08-17ND
2011-02-16ND
2011-02-16ND
2011-02-16ND
2011-08-26ND
2011-08-26ND
2011-08-26ND
2012-02-10ND
2012-02-10ND
2012-02-10ND
2012-07-13ND
2012-07-13ND
2012-07-13ND
2013-02-01ND
2013-02-01ND
2013-02-01ND
2014-02-13ND
2014-08-14ND
2014-08-14ND
2015-01-13ND
2015-01-13ND
2015-05-07ND
2015-07-29ND