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EWG's Tap Water Database — 2019 UPDATE

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Hexachlorocyclopentadiene

Forrest City Waterworks

Hexachlorocyclopentadiene was historically used for the manufacture of currently banned pesticides, such as endrin, dieldrin and chlordane. Itís still used for production of flame retardants, resins and plastics.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013ND40ND
2014ND20ND
2015N/A00N/A
2016ND40ND
2017ND20ND

ppb = parts per billion

State and national drinking water standards and health guidelines

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
2013-08-2713241000306ND
2013-08-2713241000206ND
2013-11-0513310000906ND
2013-11-0513310000806ND
2014-04-2314114013806ND
2014-08-2714240000606ND
2016-07-0616189013506ND
2016-07-0616189013606ND
2016-11-1416321008901ND
2016-11-1416321008801ND
2017-04-0317096000206ND
2017-10-0317278005601ND