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EWG's Tap Water Database — 2019 UPDATE

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Heptachlor epoxide

City of Lake Charles Water System

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

 

66

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND340ND
2013N/A00N/A
2014N/A00N/A
2015ND320ND
2016N/A00N/A
2017N/A00N/A

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
2012-04-30AD65282ND
2012-04-30AD65286ND
2012-04-30AD65284ND
2012-04-30AD65286ND
2012-04-30AD65283ND
2012-04-30AD65282ND
2012-04-30AD65283ND
2012-04-30AD65284ND
2012-04-30AD65285ND
2012-04-30AD65285ND
2012-05-29AD65745ND
2012-05-29AD65744ND
2012-05-29AD65746ND
2012-05-29AD65742ND
2012-05-29AD65743ND
2012-05-29AD65742ND
2012-05-29AD65744ND
2012-05-29AD65743ND
2012-05-29AD65745ND
2012-05-29AD65746ND
2012-07-23AD67958ND
2012-07-23AD67957ND
2012-07-23AD67956ND
2012-07-23AD67960ND
2012-07-23AD67960ND
2012-07-23AD67959ND
2012-07-23AD67958ND
2012-07-23AD67959ND
2012-07-23AD67957ND
2012-07-23AD67956ND
2012-10-08AD71685ND
2012-10-08AD71683ND
2012-10-08AD71683ND
2012-10-08AD71685ND
2015-03-2335180731004ND
2015-03-2335180731005ND
2015-03-2335180731002ND
2015-03-2335180731003ND
2015-03-2335180731001ND
2015-03-2335180731002ND
2015-03-2335180731003ND
2015-03-2335180731004ND
2015-03-2335180731005ND
2015-03-2335180731001ND
2015-07-2735199384003ND
2015-07-2735199384005ND
2015-07-2735199384001ND
2015-07-2735199384002ND
2015-07-2735199384004ND
2015-07-2735199384005ND
2015-07-2735199384003ND
2015-07-2735199384002ND
2015-07-2735199384004ND
2015-07-2735199384001ND
2015-08-1035201689002ND
2015-08-1035201689003ND
2015-08-1035201689004ND
2015-08-1035201689005ND
2015-08-1035201689004ND
2015-08-1035201689005ND
2015-08-1035201689001ND
2015-08-1035201689002ND
2015-08-1035201689003ND
2015-08-1035201689001ND
2015-09-2135208328005ND
2015-09-2135208328005ND