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EWG's Tap Water Database — 2019 UPDATE

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Hexachlorocyclopentadiene

City of Corpus Christi

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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND10ND
2013ND40ND
2014ND10ND
2015ND10ND
2016ND10ND
2017ND50ND

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
2012-01-251201639003ND
2013-02-13AC10495ND
2013-06-24AC23018ND
2013-08-09AC27512ND
2013-12-20AC38193ND
2014-03-24AC48195ND
2015-02-17AC80789ND
2016-02-10AD23185ND
2017-01-18AD65522ND
2017-03-21AD76162ND
2017-05-16AD84515ND
2017-07-28AD91469ND
2017-11-14AE04820ND