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EWG's Tap Water Database — 2021 UPDATE

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Hexachlorocyclopentadiene

City of Safford

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.

 

34

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND100ND
2015N/A00N/A
2016N/A00N/A
2017ND200ND
2018ND40ND
2019N/A00N/A

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
2014-05-20550-24920-9SND
2014-05-20550-24920-7SND
2014-05-20550-24920-5SND
2014-05-20550-24920-3SND
2014-05-20550-24920-1SND
2014-10-14550-33356-5ND
2014-10-14550-33356-1ND
2014-10-14550-33356-3ND
2014-10-14550-33356-7ND
2014-10-14550-33356-9ND
2017-02-08550-77231-1SND
2017-02-08550-77229-1SND
2017-02-08550-77228-1SND
2017-02-08550-77227-1SND
2017-02-08550-77226-1SND
2017-02-08550-77225-1SND
2017-03-13550-79141-1ND
2017-05-08550-82534-1SOCND
2017-08-30550-89048-1SOCND
2017-09-28564304-001ND
2017-09-28564303-001ND
2017-09-28550-90609-1SOCND
2017-09-28550-90605-1SOCND
2017-10-09565187-001ND
2017-10-09550-91187-1SOCND
2017-10-09550-91194-1SOCND
2017-10-09565186-001ND
2017-10-09565188-001ND
2017-11-02550-92613-1ND
2017-11-13550-93144-1ND
2018-02-21550-98383-1SOCND
2018-05-16550-103092-1 SOCND
2018-08-01550-107260-1ND
2018-10-30550-112590-1 SOCND