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EWG's Tap Water Database — 2021 UPDATE

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Heptachlor epoxide

Country Pines North Subdivision Ws

Heptachlor epoxide is a breakdown product of heptachlor, a highly toxic and carcinogenic pesticide banned in the U.S. since the 1980s.

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 0.006 ppb

The EWG Health Guideline of 0.006 ppb for heptachlor epoxide 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 cancer.

EPA Maximum Contaminant
Level (MCL) 0.2 ppb

The legal limit for heptachlor epoxide, established in 1991, was based on analytical detection limits at the time that the standard was set. This limit may not fully protect against the risk of cancer.

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