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EWG's Tap Water Database — 2019 UPDATE

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Hexachlorocyclopentadiene

City of Columbia

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND20ND
2014ND20ND
2015ND20ND
2016ND20ND
2017ND20ND

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
2012-02-06AD02307ND
2012-02-06AD02308ND
2013-01-30AD19088ND
2013-01-30AD19089ND
2014-01-15AD34535ND
2014-01-15AD34536ND
2015-01-15AD50348ND
2015-01-15AD50347ND
2016-01-13AD69191ND
2016-06-21AD77607ND
2017-10-26AE02622ND
2017-10-26AE02621ND