Know Your Environment. Protect Your Health.

Hexachlorocyclopentadiene

Falls Water Company Inc

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.

 

17

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND20ND
2020N/A00N/A
2021ND50ND
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
2018-08-08SI80810801ND
2018-11-14SI81110401ND
2019-03-25SI90316701ND
2019-04-01SI90400501ND
2021-11-16SI11111703ND
2021-11-16SI11111704ND
2021-11-16SI11111705ND
2021-11-16SI11111701ND
2021-11-16SI11111702ND
2022-08-15SI20817502ND
2022-08-15SI20817503ND
2022-08-15SI20817504ND
2022-08-15SI20817505ND
2023-03-28SI30324001ND
2023-03-29SI30325201ND
2023-06-14SI30624701ND
2023-08-29SI30840803ND