Know Your Environment. Protect Your Health.

Heptachlor

Town of Myersville

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
2019ND20ND
2020N/A00N/A
2021ND10ND
2022ND20ND
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
2018-05-092314608002ND
2018-05-092314608_001-002ND
2018-05-09E18004045001ND
2018-06-27E18004661001ND
2019-04-023026553_001_002ND
2019-09-05E20000967001ND
2021-02-02E21001974001ND
2022-02-02OALDWSOC020322_082ND
2022-02-02OALDWSOC020322_087ND
2023-04-263300229ND