Know Your Environment. Protect Your Health.

Heptachlor

Cross Roads Special Utility District

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
2018ND20ND
2019ND10ND
2020ND10ND
2021ND60ND
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
2018-06-11Q1823067001ND
2018-06-11Q1823067009ND
2019-10-29Q1974604005ND
2020-12-17Q2050079001ND
2021-03-02Q2105308001ND
2021-06-24Q2116616001ND
2021-09-21Q2125859001ND
2021-11-30Q2133008001ND
2021-11-30Q2133008002ND
2021-11-30Q2133008003ND
2022-03-22AF91424ND
2022-03-22AF91428ND
2023-07-20Q2328742003ND
2023-10-16Q2343886005ND