Know Your Environment. Protect Your Health.

Hexachlorocyclopentadiene

Jones County 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.

 

25

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
2019ND20ND
2020ND50ND
2021ND60ND
2022ND80ND
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
2019-09-128754-091219-E07SND
2019-10-258754-102519-E07SND
2020-03-2337729_20-12719ND
2020-07-138754-071320-E8BSND
2020-12-1037729_20-53475ND
2020-12-1037729_20-53476ND
2020-12-1037729_20-53477ND
2021-02-238754-022321-E02SND
2021-02-238754-022321-E1ASND
2021-02-238754-022321-E1BSND
2021-05-258754-052521-E1BSND
2021-05-258754-052521-E1ASND
2021-05-258754-052521-E02SND
2022-02-288754-022822-EP1SND
2022-05-188754-051822-EP1SND
2022-08-038754-080322-E04SND
2022-08-038754-080322-E07SND
2022-08-038754-080322-EP1SND
2022-11-158754-111522-EP1SND
2022-11-168754-111622-E04SND
2022-11-168754-111622-E07SND
2023-01-258754-012523-EP1SND
2023-06-1337729_23-31845ND
2023-06-1337729_23-31846ND
2023-07-2537729_23-40162ND