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EWG's Tap Water Database — 2021 UPDATE

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Benzene

Horsham Water&sewer Authority

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.

MORE ABOUT THIS CONTAMINANT

 

106

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND230ND
2015ND240ND
2016ND220ND
2017ND160ND
2018ND80ND
2019ND130ND

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
2014-01-09AE19948ND
2014-01-09AE19956ND
2014-01-09AE19959ND
2014-01-24AE21287ND
2014-02-19AE24091ND
2014-02-19AE24093ND
2014-02-19AE24094ND
2014-02-19AE24099ND
2014-02-19AE24100ND
2014-02-20AE24092ND
2014-04-16AE29642ND
2014-04-16AE29643ND
2014-04-16AE29635ND
2014-04-16AE29638ND
2014-04-16AE29639ND
2014-07-23AE41288ND
2014-07-23AE41289ND
2014-08-13AE43999ND
2014-08-13AE44001ND
2014-08-13AE44009ND
2014-10-08AE51808ND
2014-10-09AE51797ND
2014-10-09AE51805ND
2015-01-1612286574ND
2015-01-1612286587ND
2015-01-1612286613ND
2015-03-0412514944ND
2015-03-0412514965ND
2015-03-0412514986ND
2015-03-0412515007ND
2015-03-0412515028ND
2015-03-0412515049ND
2015-03-0412515070ND
2015-03-0412515091ND
2015-03-0412515112ND
2015-04-1612632996ND
2015-04-1612633038ND
2015-04-1612633059ND
2015-04-2312633017ND
2015-07-1513012148ND
2015-07-1513012190ND
2015-07-1713012127ND
2015-07-1713012169ND
2015-10-1313388721ND
2015-10-1413388658ND
2015-10-1413388679ND
2015-10-1413388700ND
2016-01-1213752683ND
2016-01-1213752704ND
2016-01-1213752725ND
2016-02-1613869805ND
2016-03-1613985449ND
2016-03-1613985470ND
2016-03-1613985506ND
2016-03-1613985533ND
2016-03-1613985554ND
2016-03-1613985575ND
2016-03-1713985428ND
2016-03-1713985491ND
2016-04-2614102752ND
2016-05-1714250266ND
2016-05-1714250287ND
2016-05-1714250308ND
2016-07-1914569344ND
2016-07-1914569365ND
2016-07-1914569386ND
2016-10-2615075526ND
2016-10-2615075547ND
2016-10-2615075568ND
2017-01-0515517129ND
2017-01-0515517087ND
2017-01-2515517108ND
2017-02-1415655276ND
2017-02-1415655297ND
2017-02-1415655318ND
2017-02-1415655255ND
2017-03-3015795477ND
2017-04-0515936826ND
2017-04-0515936847ND
2017-04-0515936868ND
2017-04-1815936805ND
2017-08-0916565753ND
2017-08-1616565711ND
2017-08-1616565732ND
2017-10-1016880022ND
2018-01-30AF74814ND
2018-01-30AF74813ND
2018-02-13AF75932ND
2018-03-23AF79016ND
2018-06-22AF86999ND
2018-08-30AF94269ND
2018-10-03AF96985ND
2018-12-27AG04620ND
2019-02-11AG07771ND
2019-02-11AG07772ND
2019-02-11AG07773ND
2019-02-11AG07775ND
2019-02-27AG09179ND
2019-04-11AG13046ND
2019-04-11AG13047ND
2019-05-09AG16016ND
2019-05-09AG16019ND
2019-05-23AG16891ND
2019-08-21AG28299ND
2019-09-18AG31924ND
2019-09-18AG31925ND