Know Your Environment. Protect Your Health.

Heptachlor epoxide

Aloha Gardens Utilities

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

 

9

Samples

0

Samples exceeding legal limit (MCL)

9

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.1000 ppb110.1000 ppb
20190.0900 ppb110.0900 ppb
20200.128 ppb330.0930 ppb - 0.190 ppb
20210.0610 ppb110.0610 ppb
20220.0540 ppb110.0540 ppb
20230.0590 ppb220.0550 ppb - 0.0630 ppb

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 Result
2018-01-230.1000 ppb
2019-01-220.0900 ppb
2020-01-270.190 ppb
2020-02-200.0930 ppb
2020-04-140.1000 ppb
2021-02-010.0610 ppb
2022-02-280.0540 ppb
2023-03-070.0630 ppb
2023-06-210.0550 ppb