Know Your Environment. Protect Your Health.

Hexachlorocyclopentadiene

Jonesboro 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.

 

21

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND120ND
2019ND20ND
2020ND10ND
2021ND50ND
2022ND10ND
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
2018-03-0535378990001ND
2018-03-0535378990001ND
2018-08-2035412727001ND
2018-08-2035412727002ND
2018-08-2035412727003ND
2018-08-2035412727004ND
2018-08-2035412727004ND
2018-08-2035412727003ND
2018-08-2035412727001ND
2018-08-2035412727002ND
2018-08-2735414189001ND
2018-08-2735414189001ND
2019-10-2235507148001ND
2019-10-2235507148001ND
2020-09-0835577115001ND
2021-04-0635623965001ND
2021-04-0635623965002ND
2021-04-0635623965003ND
2021-04-0635623965004ND
2021-04-0635623965005ND
2022-11-2835763114001ND