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EWG's Tap Water Database — 2019 UPDATE

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Heptachlor epoxide

Bellefonte Borough Water Authority

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

 

16

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
2014ND20ND
2015ND10ND
2016ND40ND
2017ND50ND

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
2012-04-0512040671ND
2012-04-1912041363ND
2012-08-1612081884ND
2012-10-1812101416-01ND
2014-06-1114061493-01ND
2014-08-2114082551-01ND
2015-07-1613061466ND
2016-03-1614031432ND
2016-06-1514470326ND
2016-09-2214974651ND
2016-11-1715428415ND
2017-03-2215849500ND
2017-05-1616319952ND
2017-05-1616319925ND
2017-08-1716628603ND
2017-08-1716628632ND