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EWG's Tap Water Database — 2019 UPDATE

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Hexachlorobenzene (HCB)

Philadelphia Water Department

Hexachlorobenzene is a cancer-causing, neurotoxic and hormone-disrupting chemical used as a pesticide until 1984. It is still found in landfills and hazardous waste sites, and can be detected in people.

 

21

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND30ND
2013N/A00N/A
2014ND60ND
2015ND30ND
2016ND30ND
2017ND60ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.03 ppb

The EWG Health Guideline of 0.03 ppb for hexachlorobenzene 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) 1 ppb

The legal limit for hexachlorobenzene, established in 1992, 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 hexachlorobenzene exposure.

ppb = parts per billion

All test results

Date Lab ID Result
2012-04-026604134ND
2012-04-026604132ND
2012-04-026604133ND
2014-04-077422122ND
2014-04-077422120ND
2014-04-077422118ND
2014-08-197572176ND
2014-08-197572174ND
2014-08-197572178ND
2015-06-1012888349ND
2015-06-1012888325ND
2015-06-1012888373ND
2016-06-0314411777ND
2016-06-0314411752ND
2016-06-0314411727ND
2017-05-1616101006ND
2017-05-1616100981ND
2017-05-1616100956ND
2017-07-2416420644ND
2017-07-2416420619ND
2017-07-2416420594ND