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EWG's Tap Water Database — 2021 UPDATE

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Hexachlorocyclopentadiene

Country Pines North Subdivision Ws

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.

MORE ABOUT THIS CONTAMINANT

 

22

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015N/A00N/A
2016ND80ND
2017N/A00N/A
2018N/A00N/A
2019ND140ND

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
2016-07-2535256355004ND
2016-07-2535256355003ND
2016-07-2535256355004ND
2016-07-2535256355003ND
2016-08-1535260484002ND
2016-08-1535260484001ND
2016-08-1535260484002ND
2016-08-1535260484001ND
2019-03-1135454602002ND
2019-03-1135454602001ND
2019-03-1135454602002ND
2019-03-1135454602001ND
2019-06-1735476472002ND
2019-06-1735476472001ND
2019-06-1735476472001ND
2019-06-1735476472002ND
2019-07-1835484078001ND
2019-07-1835484078003ND
2019-07-1835484078001ND
2019-07-1835484078003ND
2019-09-2635500930001ND
2019-09-2635500930001ND