Know Your Environment. Protect Your Health.

Hexachlorocyclopentadiene

Pittsburgh Water & Sewer Authority

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
2018ND10ND
2019ND10ND
2020ND30ND
2021ND10ND
2022N/A00N/A
2023ND30ND

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
2018-04-188044653-01ND
2019-04-029042623-01ND
2020-04-0222117033.00ND
2020-07-0822699931.00ND
2020-09-1623088738.00ND
2021-04-2024339768.00ND
2023-05-2229205327.00ND
2023-10-3029978274.00ND
2023-10-3029978275.00ND