Know Your Environment. Protect Your Health.

Hexachlorocyclopentadiene

Wallace, Town of

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019ND80ND
2020N/A00N/A
2021N/A00N/A
2022ND100ND
2023N/A00N/A

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
2019-08-1437729_19-34796ND
2019-08-1437729_19-34806ND
2019-08-1437729_19-34817ND
2019-08-1437729_19-34827ND
2019-08-1437729_19-34839ND
2019-08-1437729_19-34853ND
2019-08-1937729_19-35357ND
2019-09-1837729_19-40268ND
2022-10-0337729_22-47907ND
2022-10-0337729_22-47932ND
2022-10-0337729_22-47931ND
2022-10-0337729_22-47930ND
2022-10-0337729_22-47929ND
2022-10-0337729_22-47903ND
2022-11-3037729_22-58956ND
2022-11-3037729_22-58957ND
2022-11-3037729_22-58958ND
2022-11-3037729_22-58959ND