Know Your Environment. Protect Your Health.

Heptachlor

City of Hearne

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

 

17

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND30ND
2020ND20ND
2021ND40ND
2022ND20ND
2023ND20ND

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
2018-06-21AE31058ND
2018-06-21AE31059ND
2018-06-21AE31060ND
2018-06-21AE31057ND
2019-05-16AE66972ND
2019-05-16AE66973ND
2019-08-20AE79659ND
2020-04-23AF07887ND
2020-06-30AF17398ND
2021-06-08AF57037ND
2021-06-08AF57038ND
2021-06-08AF57039ND
2021-06-08AF57052ND
2022-06-22AG02037ND
2022-06-22AG02038ND
2023-07-27AG50476ND
2023-07-27AG50483ND