Know Your Environment. Protect Your Health.

Heptachlor

City of Alpine

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

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND30ND
2020ND10ND
2021ND20ND
2022ND30ND
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
2018-07-17Q1828669009ND
2018-07-17Q1828669010ND
2019-06-18Q1937877012ND
2019-06-18Q1937877013ND
2019-06-18Q1937877014ND
2020-06-01Q2021525025ND
2021-07-13Q2118334001ND
2021-07-13Q2118334002ND
2022-09-19Q2228089001ND
2022-09-19Q2228089011ND
2022-09-19Q2228089012ND
2023-07-24Q2329255001ND