Know Your Environment. Protect Your Health.

Hexachlorocyclopentadiene

Ardmore Water System

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.

 

13

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
2019ND60ND
2020N/A00N/A
2021N/A00N/A
2022ND70ND
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
2019-01-2419010621-001BND
2019-01-2419010621-002BND
2019-07-3020114806001_ISOCND
2019-07-3020114806002_ISOCND
2019-09-1020120791001_ISOCND
2019-10-2920128009001_ISOCND
2022-02-2835699992001_ISOCND
2022-02-2835699992002_ISOCND
2022-05-2335719548001_ISOCND
2022-05-2335719549001_ISOCND
2022-05-2335719550001_ISOCND
2022-11-2835762267001A_ISOCND
2022-11-2835762267001_ISOCND