Know Your Environment. Protect Your Health.

Heptachlor

Rosemount

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

 

32

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND50ND
2019ND80ND
2020ND70ND
2021ND20ND
2022ND100ND
2023N/A00N/A

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
2018-10-2418J1245-03ND
2018-10-2418J1247-02ND
2018-10-2418J1247-03ND
2018-10-2418J1247-04ND
2018-10-2418J1245-02ND
2019-02-1519B0720-01ND
2019-02-1519B0720-02ND
2019-02-1519B0720-03ND
2019-02-1519B0720-04ND
2019-02-1519B0722-01ND
2019-04-2919D2437-01ND
2019-09-1219I0608-01ND
2019-11-2519K1669-01ND
2020-01-0720A0140-05ND
2020-01-0720A0140-04ND
2020-01-0720A0140-01ND
2020-01-0720A0140-02ND
2020-05-1920E1080-02ND
2020-05-1920E1080-03ND
2020-05-1920E1080-04ND
2021-05-0321E0039-03ND
2021-08-1121H0961-01ND
2022-08-1622H1498-02ND
2022-08-1622H1499-04ND
2022-08-1622H1499-03ND
2022-08-1622H1499-02ND
2022-08-1622H1498-01ND
2022-10-1122J0400-01ND
2022-10-1122J0400-02ND
2022-10-1122J0400-03ND
2022-10-1122J0400-04ND
2022-12-2022L0972-01ND