Know Your Environment. Protect Your Health.

Heptachlor

Falfurrias Utility Board

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
2018ND50ND
2019ND10ND
2020ND10ND
2021ND50ND
2022ND10ND
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
2018-02-12AE13396ND
2018-02-12AE13397ND
2018-06-14AE30098ND
2018-06-14AE30099ND
2018-11-05AE45283ND
2019-11-07AE88969ND
2020-08-17AF23919ND
2021-05-26AF55962ND
2021-11-10Q2131711001ND
2021-11-10Q2131711002ND
2021-11-10Q2131711003ND
2021-11-10Q2131711004ND
2022-06-30AG03162ND
2023-04-12AG36654ND