Know Your Environment. Protect Your Health.

Heptachlor epoxide

City of Linden

Heptachlor epoxide is a breakdown product of heptachlor, a highly toxic and carcinogenic pesticide banned in the U.S. since the 1980s.

 

11

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND40ND
2020ND10ND
2021ND10ND
2022ND30ND
2023ND10ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.006 ppb

The EWG Health Guideline of 0.006 ppb for heptachlor epoxide 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): 0.2 ppb

The legal limit for heptachlor epoxide, 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.

ppb = parts per billion

All test results

Date Lab ID Result
2018-01-03Q1800198004ND
2019-05-02Q1918234009ND
2019-05-02Q1918234010ND
2019-05-02Q1918234011ND
2019-05-02Q1918234012ND
2020-04-22Q2016067009ND
2021-01-25Q2101630001ND
2022-02-08Q2204277001ND
2022-11-16Q2234545005ND
2022-11-16Q2234545006ND
2023-02-13Q2305588006ND