Know Your Environment. Protect Your Health.

Heptachlor

Connecticut Water Company - Hebron Center Division

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

 

11

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019ND10ND
2020N/A00N/A
2021ND20ND
2022ND40ND
2023ND40ND

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
2019-02-11SOC 200521212ND
2021-08-31300067011 300067016ND
2021-10-25S300088197 300088199ND
2022-01-13CK16252ND
2022-04-21CL13693ND
2022-07-07CL72298ND
2022-10-18CM65670ND
2023-01-12CN22970ND
2023-04-17CN85300ND
2023-08-15CO75343ND
2023-10-17CP28041ND