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EWG's Tap Water Database — 2019 UPDATE

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Heptachlor epoxide

Hammond Water Works Department

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

 

23

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
2016ND30ND
2017ND40ND

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
2012-02-07275024RS525-1201ND
2012-05-16279895RS28-1202ND
2012-08-14284358RS28-1203ND
2012-11-13288500RS525-1204ND
2013-02-11292113RS525-1301ND
2013-05-14296662RS525-1302ND
2013-08-13301705RS525-1303ND
2013-11-12307095RS525-1304ND
2014-02-10311576RS525-1401ND
2014-05-13317542RS525-1402ND
2014-08-13323408RS525-1403ND
2014-11-12329226RS525-1404ND
2015-02-10334196RS525-1501ND
2015-05-12340057RS28-1502ND
2015-08-11346314RS28-1503ND
2015-11-10352794RS525-1504ND
2016-05-10362789RS525-1602ND
2016-08-10369905RS525-1603ND
2016-11-08376617RS525-1604ND
2017-02-14382815RS525-1701ND
2017-05-09388413RS525-1702ND
2017-08-08395139RS525-1703ND
2017-11-14402809RS525-1704ND