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EWG's Tap Water Database — 2019 UPDATE

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Heptachlor

New Orleans Algiers Water Works

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

 

22

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
2013ND40ND
2014ND40ND
2015ND40ND
2016ND40ND
2017ND20ND

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
2012-03-05AD64088ND
2012-03-05AD64088ND
2012-12-17AD74173ND
2012-12-17AD74173ND
2013-01-22AD74828ND
2013-01-22AD74828ND
2013-09-24AD84670ND
2013-09-24AD84670ND
2014-02-04AD88744ND
2014-02-04AD88744ND
2014-10-22AD98836ND
2014-10-22AD98836ND
2015-03-1635179807001ND
2015-03-1635179807001ND
2015-10-1435212328004ND
2015-10-1435212328004ND
2016-01-2735226999001ND
2016-01-2735226999001ND
2016-12-1335283615002ND
2016-12-1335283615002ND
2017-02-2235296827001ND
2017-02-2235296827001ND