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EWG's Tap Water Database — 2019 UPDATE

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Heptachlor epoxide

Lee County WSC

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

 

30

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND50ND
2013ND20ND
2014N/A00N/A
2015ND90ND
2016ND60ND
2017ND80ND

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
2012-01-11AB77488ND
2012-01-11AB77486ND
2012-01-11AB77483ND
2012-01-11AB77482ND
2012-01-11AB77485ND
2013-10-14Q1308854030ND
2013-10-14Q1308854018ND
2015-03-04AC83057ND
2015-03-04AC83056ND
2015-03-04AC83055ND
2015-03-04AC83058ND
2015-06-17AC96431ND
2015-06-17AC96429ND
2015-06-17AC96427ND
2015-09-01AD05253ND
2015-10-15AD10881ND
2016-01-27AD20522ND
2016-01-27AD20519ND
2016-04-12AD32913ND
2016-04-12AD32912ND
2016-07-26AD45813ND
2016-10-31AD55672ND
2017-01-30AD67684ND
2017-01-30AD67683ND
2017-05-04AD82881ND
2017-05-30AD86010ND
2017-07-24AD90418ND
2017-07-24AD90417ND
2017-10-26AE02515ND
2017-10-26AE02516ND