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EWG's Tap Water Database — 2019 UPDATE

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Heptachlor

Lubbock Public Water System

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

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND10ND
2013ND40ND
2014ND20ND
2015ND20ND
2016ND30ND
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
2012-01-11AB77647ND
2013-01-161301430003ND
2013-06-11Q1302096010ND
2013-08-06Q1304984005ND
2013-12-10Q1317110005ND
2014-01-22Q1401929004ND
2014-02-12Q1404338004ND
2015-02-03Q1504173007ND
2015-04-07Q1513290007ND
2016-02-03Q1604716006ND
2016-02-03Q1604716007ND
2016-04-06Q1613543003ND
2017-02-08Q1705565005ND
2017-09-27Q1746701007ND