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EWG's Tap Water Database — 2021 UPDATE

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Heptachlor

Epcor Water - Mohave

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

 

37

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015ND160ND
2016ND20ND
2017ND30ND
2018ND160ND
2019N/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
2015-03-10550-41482-1SND
2015-09-15550-51357-1SND
2015-09-15550-51357-2SND
2015-09-15550-51357-3SND
2015-09-15550-51357-4SND
2015-09-15550-51357-5ND
2015-09-15550-51357-6ND
2015-09-15550-51357-7SND
2015-09-15550-51357-8TTND
2015-11-30550-55138-8TND
2015-11-30550-55138-6ND
2015-11-30550-55138-5ND
2015-11-30550-55138-4ND
2015-11-30550-55138-3ND
2015-11-30550-55138-2ND
2015-11-30550-55138-1ND
2016-03-04550-59813-1ND
2016-08-22550-68530-1SND
2017-06-087060966-01ND
2017-08-107081254-01-SOCND
2017-11-157111744-01ND
2018-06-133964598ND
2018-06-133964597ND
2018-06-193974880ND
2018-06-203974877ND
2018-06-253978011ND
2018-06-253974881ND
2018-06-273976354ND
2018-08-234035561ND
2018-10-154094849ND
2018-10-154093021ND
2018-10-154092986ND
2018-10-154092981ND
2018-10-154092978ND
2018-10-164094847ND
2018-10-164094872ND
2018-10-164094848ND