Know Your Environment. Protect Your Health.

Heptachlor epoxide

City of Oyster Creek

NOTE: City of Oyster Creek purchases water from Brazosport Water Authority which is required to test for heptachlor epoxide. Sample information shown below was taken by Brazosport Water Authority.

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

 

6

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

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

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

NOTE: City of Oyster Creek purchases water from Brazosport Water Authority which is required to test for heptachlor epoxide. Sample information shown below was taken by Brazosport Water Authority.

Date Lab ID Result
2018-01-22AE09699ND
2019-02-07AE53613ND
2020-03-17AF03387ND
2021-01-21AF40456ND
2022-01-24AF81428ND
2023-05-15AG40595ND