Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Hexachlorocyclopentadiene

Glendale Water Department

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.

 

43

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
2013ND40ND
2014ND40ND
2015ND40ND
2016ND40ND
2017ND230ND

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
2012-01-109590-069-0905ND
2012-04-119590-069-0940ND
2012-07-119590-069-0746ND
2012-10-109590-069-0740ND
2013-01-099590-069-1058ND
2013-04-109590-069-0950ND
2013-07-109590-069-0904ND
2013-10-099590-069-0945ND
2014-01-159590-069-1010ND
2014-04-099590-069-1040ND
2014-07-099590-069-0923ND
2014-10-149590-069-1223ND
2015-01-149590-069-0941ND
2015-04-159590-069-0811ND
2015-07-159590-069-0957ND
2015-10-149590-069-0903ND
2016-01-139590-069-0931ND
2016-04-139590-069-1057ND
2016-07-139590-069-1017ND
2016-10-139590-069-1027ND
2017-01-129588-070-1011ND
2017-01-129588-069-1003ND
2017-02-219588-070-1033ND
2017-02-219588-069-1027ND
2017-03-169588-069-1027ND
2017-03-169588-070-1033ND
2017-04-139588-070-1027ND
2017-04-139588-069-1017ND
2017-05-119588-070-0937ND
2017-05-119588-069-0927ND
2017-06-129588-069-0847ND
2017-06-129588-070-0857ND
2017-07-139588-070-0858ND
2017-07-139588-069-0900ND
2017-08-109588-069-0921ND
2017-08-109588-070-0931ND
2017-09-149588-069-0931ND
2017-10-109588-070-1137ND
2017-10-109588-069-1131ND
2017-11-169588-070-1121ND
2017-11-169588-069-1113ND
2017-12-159588-070-0833ND
2017-12-159588-069-0823ND