Know Your Environment. Protect Your Health.

Heptachlor epoxide

Bethany Special Utility District

NOTE: Bethany Special Utility District purchases water from Johnson County SUD which is required to test for heptachlor epoxide. Sample information shown below was taken by Johnson County SUD.

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

 

33

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND50ND
2019ND30ND
2020ND20ND
2021ND40ND
2022ND20ND
2023ND20ND

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: Bethany Special Utility District purchases water from Johnson County SUD which is required to test for heptachlor epoxide. Sample information shown below was taken by Johnson County SUD.

Date Lab ID Result
2018-02-21Q1807323008ND
2018-02-21Q1807323003ND
2018-12-10Q1850236024ND
2018-12-10Q1850236025ND
2018-12-10Q1850236026ND
2018-12-10Q1850236027ND
2018-12-10Q1850236028ND
2018-12-10Q1850236029ND
2019-02-20Q1907529021ND
2019-02-20Q1907529028ND
2019-02-20Q1907529008ND
2019-02-20Q1907529001ND
2019-05-21Q1927429007ND
2020-01-28Q2003074035ND
2020-05-05Q2017189006ND
2020-10-07Q2039319012ND
2021-03-04Q2105758001ND
2021-03-31Q2108142001ND
2021-03-31Q2108142009ND
2021-03-31Q2108142008ND
2021-03-31Q2108142007ND
2021-03-31Q2108142004ND
2021-03-31Q2108142003ND
2021-03-31Q2108142002ND
2022-02-28Q2206681001ND
2022-05-04Q2213477017ND
2022-06-13Q2216387001ND
2022-09-15Q2227732009ND
2022-10-27Q2232469001ND
2022-10-27Q2232469031ND
2022-10-27Q2232469032ND
2023-04-06Q2312829005ND
2023-10-26Q2346224040ND