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EWG's Tap Water Database — 2019 UPDATE

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Hexachlorocyclopentadiene

Colorado Springs Utilities

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.

 

34

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
20130.00927 ppb112ND - 0.0510 ppb
20140.0250 ppb21ND - 0.0500 ppb
20150.0190 ppb31ND - 0.0570 ppb
20160.0128 ppb123ND - 0.0700 ppb
20170.0210 ppb62ND - 0.0740 ppb

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 Result
2013-06-050.0510 ppb
2013-06-05ND
2013-06-05ND
2013-06-05ND
2013-08-07ND
2013-08-07ND
2013-08-07ND
2013-08-07ND
2013-08-07ND
2013-10-020.0510 ppb
2013-10-02ND
2014-01-08ND
2014-05-130.0500 ppb
2015-05-050.0570 ppb
2015-06-25ND
2015-07-01ND
2016-04-04ND
2016-04-04ND
2016-04-05ND
2016-05-10ND
2016-05-250.0530 ppb
2016-07-05ND
2016-07-050.0700 ppb
2016-07-05ND
2016-07-06ND
2016-07-06ND
2016-10-030.0300 ppb
2016-10-03ND
2017-01-04ND
2017-01-04ND
2017-04-050.0740 ppb
2017-06-27ND
2017-07-05ND
2017-11-200.0520 ppb