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EWG's Tap Water Database — 2019 UPDATE

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Heptachlor

Smyrna Water Department

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

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013ND30ND
2014ND30ND
2015N/A00N/A
2016ND60ND
2017N/A00N/A

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
2013-11-2035117221005ND
2013-11-2035117221004ND
2013-11-2035117221003ND
2014-03-2435131615003ND
2014-03-2435131615002ND
2014-03-2435131615001ND
2016-11-302193089019ND
2016-11-302193089018ND
2016-11-302193089017ND
2016-11-302193089009ND
2016-11-302193089008ND
2016-11-302193089007ND