Know Your Environment. Protect Your Health.

Hexachlorocyclopentadiene

Raintree S/d

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.

 

9

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019N/A00N/A
2020ND10ND
2021ND20ND
2022ND10ND
2023ND20ND

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
2018-01-30CA18051-01ND
2018-05-31CB04178-01ND
2018-08-15CB09282-01ND
2020-02-26CC21638-01ND
2021-07-29CE08206-01ND
2021-10-28CE13608-01ND
2022-09-27CF08184-01ND
2023-03-01752-3879-1ND
2023-08-03752-10149-1ND