Know Your Environment. Protect Your Health.

Hexachlorocyclopentadiene

City of Taneytown

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.

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019N/A00N/A
2020ND70ND
2021N/A00N/A
2022N/A00N/A
2023ND70ND

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
2018-06-20E18004568001ND
2020-03-03E20002987001ND
2020-05-05E20003476001ND
2020-05-05E20003479001ND
2020-05-05E20003480001ND
2020-09-16E21000742001ND
2020-09-16E21000743001ND
2020-09-16E21000752001ND
2023-03-21E2300223103ND
2023-03-21E2300223603ND
2023-03-21E2300223703ND
2023-05-23E2300281501ND
2023-05-23E2300281601ND
2023-05-23E2300281701ND
2023-05-23E2300281801ND