Know Your Environment. Protect Your Health.

Hexachlorocyclopentadiene

Forestbrook 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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND20ND
2020ND10ND
2021ND40ND
2022ND40ND
2023ND40ND

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
2018-10-097069-100918-E03SND
2018-10-097069-100918-E04SND
2018-10-097069-100918-E01SND
2019-06-137069-061319-E03SND
2019-10-087069-100819-E03SND
2020-10-277069-102720-E03SND
2021-10-197069-101921-E01SND
2021-10-197069-101921-E03SND
2021-10-197069-101921-E04SND
2021-11-177069-111721-E03SND
2022-02-157069-021522-E03SND
2022-04-277069-042722-E03SND
2022-07-127069-071222-E03SND
2022-10-117069-101122-E03SND
2023-01-10752-1061-1_AND
2023-06-05752-7773-1ND
2023-08-07752-10177-1ND
2023-10-09752-12420-1ND