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EWG's Tap Water Database — 2019 UPDATE

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Hexachlorocyclopentadiene

City of Buckeye Sonora - Sundance

Hexachlorocyclopentadiene was historically used for the manufacture of currently banned pesticides, such as endrin, dieldrin and chlordane. It’s still used for production of flame retardants, resins and plastics.

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
2014ND60ND
2015ND20ND
2016ND20ND
2017ND40ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 2 ppb

The EWG Health Guideline of 2 ppb for hexachlorocyclopentadiene 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 harm to the stomach and intestines.

EPA Maximum Contaminant
Level (MCL) 50 ppb

The legal limit for hexachlorocyclopentadiene, established in 1992, was based on a toxicity study in laboratory animals conducted in the 1980s.

ppb = parts per billion

All test results

Date Lab ID Result
2014-05-07484777-001AND
2014-05-07484934-001AND
2014-09-04492627-001CND
2014-09-04492628-001CND
2014-10-23495554-001BND
2014-10-29496126-001BND
2015-02-19502653-001ND
2015-02-26503037-001AND
2016-02-23525398-001BND
2016-02-24525405-001BND
2017-04-13550767-001ND
2017-04-27551845-001AND
2017-09-27563905-001BND
2017-09-27563906-001BND