Know Your Environment. Protect Your Health.

Hexachlorocyclopentadiene

City of Idaho Falls

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
2018ND20ND
2019ND20ND
2020ND10ND
2021ND80ND
2022ND20ND
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
2018-09-18SB18091727001ND
2018-10-10SB18101095001ND
2019-03-25SB19032049001ND
2019-04-16SB19041514001ND
2020-07-08SB20070749001ND
2021-06-22SB21062273001ND
2021-06-22SB21062273002ND
2021-06-23SB21062273004ND
2021-06-23SB21062273003ND
2021-07-26SB21072236002ND
2021-07-26SB21072236003ND
2021-07-26SB21072236004ND
2021-07-26SB21072236001ND
2022-06-21SB22062040001ND
2022-06-21SB22062040002ND