Know Your Environment. Protect Your Health.

Hexachlorocyclopentadiene

Avon Water Company

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.

 

22

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND110ND
2019ND70ND
2020N/A00N/A
2021N/A00N/A
2022ND40ND
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
2018-03-05D8C0238-03SOCND
2018-03-05D8C0238-04SOCND
2018-03-05D8C0238-05SOCND
2018-03-05D8C0238-06SOCND
2018-03-05D8C0238-07SOCND
2018-03-05D8C0238-08SOCND
2018-03-05D8C0238-01SOCRND
2018-03-05D8C0238-02SOCND
2018-04-25D8D2151-06SOCND
2018-07-26CA98747ND
2018-10-09SOC 200508699ND
2019-03-12SOC 200524505ND
2019-05-20SOC 200533253ND
2019-05-20SOC 200533254ND
2019-05-20SOC 200533255ND
2019-05-20SOC 200533256ND
2019-05-21SOC 200533252ND
2019-10-09SOC 200552472ND
2022-03-24CK96360ND
2022-04-08CL06143ND
2022-05-06CL27001ND
2022-07-22CL89161ND