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EWG's Tap Water Database — 2019 UPDATE

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Benzene

Penn State Univ.

Benzene is a known human carcinogen. It also damages blood cells and the nervous system. Emissions from petroleum processing, hazardous waste landfills and underground storage tanks contaminate drinking water with benzene. Read More.

To protect against cancer risks, California set a public health goal for benzene in drinking water at 0.15 parts per billion, 30 times lower than the federal legal limit of 5 parts per billion.

Click here to read more about carcinogenic VOCs.

 

167

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND340ND
2013ND280ND
2014ND140ND
2015ND350ND
2016ND270ND
2017ND290ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.15 ppb

The EWG Health Guideline of 0.15 ppb for benzene 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) 5 ppb

The legal limit for benzene, established in 1987, 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 benzene exposure.

ppb = parts per billion

All test results

Date Lab ID Result
2012-01-112A11054ND
2012-01-112A11055ND
2012-01-112A11054ND
2012-02-162B16056ND
2012-02-162B16062ND
2012-02-162B16056ND
2012-03-152C15113ND
2012-03-152C15114ND
2012-03-152C15113ND
2012-04-102D10034ND
2012-04-102D10032ND
2012-04-102D10034ND
2012-05-162E16047ND
2012-05-162E16052ND
2012-06-132F13082ND
2012-06-132F13085ND
2012-07-182G18164ND
2012-07-182G18165ND
2012-07-182G18164ND
2012-08-142H14056ND
2012-08-142H14056ND
2012-08-142H14056ND
2012-09-132I14008ND
2012-09-132I14008ND
2012-09-132I14008ND
2012-10-102J11011ND
2012-10-102J11013ND
2012-10-102J11011ND
2012-11-142K14103ND
2012-11-142K14103ND
2012-11-142K14103ND
2012-12-122L12132ND
2012-12-122L12141ND
2012-12-122L12132ND
2013-01-163A16080ND
2013-01-163A16077ND
2013-02-133B13070ND
2013-02-133B13069ND
2013-03-143C14062ND
2013-03-143C14067ND
2013-04-163D16078ND
2013-04-163D16079ND
2013-05-143E14110ND
2013-05-143E14111ND
2013-06-193F19020ND
2013-06-193F19038ND
2013-06-283F28065ND
2013-07-163G16031ND
2013-07-163G16034ND
2013-08-143H14065ND
2013-08-143H14088ND
2013-09-183I18061ND
2013-09-183I18062ND
2013-09-183I18061ND
2013-10-163J16032ND
2013-10-163J16040ND
2013-10-163J16032ND
2013-11-193K19048-06ND
2013-11-193K19040-06ND
2013-12-123L12046-07ND
2013-12-123L12104-06ND
2013-12-123L12046-06ND
2014-01-234A23025-07ND
2014-01-234A23033-06ND
2014-01-234A23025-06ND
2014-02-204B20042-07ND
2014-02-204B20041-07ND
2014-02-204B20042-06ND
2014-03-114C11016-07ND
2014-03-114C11027-07ND
2014-03-114C11016-06ND
2014-04-094D09031-01ND
2014-04-094D09036-01ND
2014-04-094D09037-01ND
2014-06-114F11107-05ND
2014-06-114F11107-04ND
2015-01-2113561251ND
2015-01-2113561277ND
2015-01-2113561252ND
2015-02-1713561335ND
2015-02-1713561298ND
2015-02-1713561336ND
2015-03-1713561377ND
2015-03-1713561378ND
2015-03-1813561403ND
2015-04-2813561441ND
2015-04-2813561440ND
2015-05-2013561503ND
2015-05-2013561466ND
2015-05-2013561504ND
2015-06-1713561566ND
2015-06-1713561529ND
2015-06-1713561567ND
2015-07-1413561608ND
2015-07-1413561634ND
2015-07-1413561609ND
2015-08-1213561693ND
2015-08-1213561655ND
2015-08-1213561692ND
2015-09-1613561755ND
2015-09-1613561718ND
2015-09-1613561756ND
2015-10-1513561797ND
2015-10-1513561823ND
2015-10-1513561798ND
2015-11-1113561190ND
2015-11-1113561166ND
2015-11-1113561214ND
2015-12-1013681490ND
2015-12-1013681519ND
2015-12-1013681491ND
2016-01-2613801558ND
2016-01-2613801510ND
2016-01-2613801534ND
2016-02-2313917115ND
2016-02-2313917072ND
2016-02-2313917116ND
2016-03-1614032231ND
2016-03-1614032208ND
2016-03-1614032185ND
2016-04-2014163601ND
2016-04-2014163558ND
2016-04-2014163602ND
2016-05-1814312909ND
2016-05-1814312938ND
2016-05-1814312910ND
2016-06-2114471234ND
2016-06-2114471264ND
2016-06-2114471235ND
2016-07-1914636476ND
2016-07-1914636431ND
2016-07-1914636477ND
2016-08-2314804538ND
2016-08-2314804488ND
2016-08-2314804513ND
2016-09-2814975892ND
2016-09-2814975922ND
2016-09-2814975893ND
2017-01-1715573248ND
2017-01-1715573249ND
2017-01-1815573203ND
2017-02-2315709661ND
2017-02-2315709662ND
2017-03-1315850541ND
2017-03-2315850708ND
2017-03-2815850836ND
2017-04-1816001591ND
2017-04-1816001592ND
2017-06-2816321152ND
2017-07-1216473295ND
2017-07-1216473403ND
2017-07-1216473404ND
2017-07-1216473405ND
2017-07-1216473406ND
2017-07-1216473407ND
2017-07-1216473408ND
2017-08-0316629370ND
2017-09-2016787341ND
2017-10-3116937433ND
2017-11-2617077320ND
2017-11-2617077321ND
2017-11-2617077322ND
2017-11-2617077323ND
2017-11-2617077324ND
2017-11-2617077325ND
2017-11-3017077372ND
2017-12-1917217480ND