Know Your Environment. Protect Your Health.

Hexachlorocyclopentadiene

Woden Water Supply Corporation

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND60ND
2019ND20ND
2020ND20ND
2021ND60ND
2022ND20ND
2023ND20ND

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
2018-03-20Q1811091004ND
2018-03-20Q1811091005ND
2018-03-20Q1811091006ND
2018-03-20Q1811091019ND
2018-03-20Q1811091020ND
2018-03-20Q1811091001ND
2019-01-16Q1902343014ND
2019-10-08Q1972051003ND
2020-04-07Q2014004013ND
2020-04-07Q2014004014ND
2021-03-16Q2106923001ND
2021-05-18Q2112986001ND
2021-10-11Q2128064001ND
2021-10-11Q2128064002ND
2021-10-11Q2128064003ND
2021-10-11Q2128064004ND
2022-03-03Q2207392001ND
2022-06-15Q2216701015ND
2023-03-01Q2308261008ND
2023-06-27Q2324601001ND