Know Your Environment. Protect Your Health.

Hexachlorocyclopentadiene

Marietta Public Works Authority

Hexachlorocyclopentadiene was historically used for the manufacture of currently banned pesticides, such as endrin, dieldrin and chlordane. It’s still used for production of flame retardants, resins and plastics.

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND60ND
2019ND60ND
2020ND30ND
2021ND30ND
2022ND30ND
2023ND30ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 2 ppb

The EWG Health Guideline of 2 ppb for hexachlorocyclopentadiene 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 harm to the stomach and intestines.

EPA Maximum Contaminant
Level (MCL): 50 ppb

The legal limit for hexachlorocyclopentadiene, established in 1992, was based on a toxicity study in laboratory animals conducted in the 1980s.

ppb = parts per billion

All test results

Date Lab ID Result
2018-08-081808227ND
2018-08-081808228ND
2018-08-081808229ND
2018-12-051812117ND
2018-12-051812118ND
2018-12-051812116ND
2019-02-061902152ND
2019-02-061902153ND
2019-02-061902154ND
2019-06-051906164ND
2019-06-051906165ND
2019-06-051906166ND
2020-04-22100773-01ND
2020-04-22100775-01ND
2020-04-22100774-01ND
2021-04-14105829-01ND
2021-05-05106064-01ND
2021-05-05106065-01ND
2022-04-19111223-01ND
2022-05-04111422-01ND
2022-05-04111423-01ND
2023-05-31117221-01ND
2023-05-31117222-01ND
2023-06-07117277-01ND