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EWG's Tap Water Database — 2019 UPDATE

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Heptachlor epoxide

Bladen County Water Dist-West Bladen

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

 

31

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
2013N/A00N/A
2014ND110ND
2015ND70ND
2016ND10ND
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
2012-01-048527-010412-E08SND
2012-01-048527-010412-E09SND
2012-01-048527-010412-L06SND
2012-04-048527-040412-E09SND
2014-01-028527-010214-E04SND
2014-01-028527-010214-E05SND
2014-04-028527-040214-E11SND
2014-05-078527-050714-E05SND
2014-05-078527-050714-E04SND
2014-07-028527-070214-L06SND
2014-07-028527-070214-E11SND
2014-09-038527-090314-E08SND
2014-10-018527-100114-E08SND
2014-10-018527-100114-L06SND
2014-12-038527-120314-E05SND
2015-01-21ND
2015-01-21ND
2015-02-04ND
2015-04-01ND
2015-05-06ND
2015-08-05ND
2015-10-01ND
2016-02-038527-020316-E05SND
2017-01-048527-010417-E04SND
2017-02-018527-020117-E05SND
2017-04-058527-040517-E11SND
2017-07-058527-070517-E11SND
2017-07-058527-070517-L06SND
2017-09-058527-090517-E08SND
2017-11-148527-111417-E08SND
2017-11-148527-111417-L06SND