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EWG's Tap Water Database — 2019 UPDATE

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Heptachlor

Bellefonte Borough Water Authority

Heptachlor is an insecticide used for termite control until 1988. It is linked to cancer, hormone disruption and neurotoxicity.

 

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 0.008 ppb

The EWG Health Guideline of 0.008 ppb for heptachlor 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) 0.4 ppb

The legal limit for heptachlor, 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 due to heptachlor exposure.

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
2015-07-1613061465ND
2016-03-1614031431ND
2016-06-1514470325ND
2016-09-2214974650ND
2016-11-1715428414ND
2017-03-2215849499ND
2017-05-1616319951ND
2017-05-1616319924ND
2017-08-1716628602ND
2017-08-1716628631ND