Know Your Environment. Protect Your Health.

Heptachlor

City of Rusk

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

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019N/A00N/A
2020ND10ND
2021ND40ND
2022N/A00N/A
2023ND10ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2018-03-21Q1811395003ND
2018-03-21Q1811395008ND
2018-03-21Q1811395012ND
2018-03-21Q1811395016ND
2020-10-01Q2038626001ND
2021-11-02Q2130691001ND
2021-11-02Q2130691002ND
2021-11-02Q2130691003ND
2021-11-02Q2130691004ND
2023-06-28Q2325031013ND