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EWG's Tap Water Database

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Hexachlorocyclopentadiene

East Cherry Creek Valley Water and Sanitation District

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

 

41

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010ND10ND
2011ND200ND
2012ND20ND
2013ND20ND
2014N/A00N/A
2015ND160ND

ppb = parts per billion.

State and national drinking water standards and health guidelines

Health Guideline 2 ppb

The 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.

ppb = parts per billion.

EPA Maximum Contaminant
Level (MCL) 50 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)50.0 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
2010-06-16ND
2011-05-18ND
2011-06-08ND
2011-06-09ND
2011-06-09ND
2011-06-21ND
2011-06-21ND
2011-06-21ND
2011-06-22ND
2011-06-22ND
2011-10-13ND
2011-10-13ND
2011-10-13ND
2011-10-17ND
2011-10-17ND
2011-10-17ND
2011-10-17ND
2011-10-18ND
2011-10-18ND
2011-10-19ND
2011-10-19ND
2012-07-13ND
2012-10-25ND
2013-06-07ND
2013-12-05ND
2015-03-17ND
2015-03-17ND
2015-03-17ND
2015-03-17ND
2015-03-18ND
2015-03-18ND
2015-03-18ND
2015-06-08ND
2015-06-08ND
2015-06-08ND
2015-06-08ND
2015-06-23ND
2015-06-23ND
2015-06-23ND
2015-06-23ND
2015-09-29ND