1,4-Dioxane in Haw River

And in Pittsboro’s Drinking Water

View the Powerpoint presentation given by Dr. Detlef Knappe from NCSU Pittsboro Town Board on Sept. 28 Dr. Detlef Knappe of NC State University presented his research concerning the presence of 1,4-Dioxane, an industrial solvent, in Pittsboro’s drinking water, which uses the Haw River as its source. Current treatment methods are not sufficient to remove this contaminant, which could have long-term risk factors.  Dr. Knappe  discussed  what is known to date about the possible upriver source of this chemical.  He made a  second presentation with some updates to the Chatham Conservation Partnership on January 21, 2016.  That presentation can be viewed here.

Major conclusions of Dr.Detlef’s presentations are:

•In the Cape Fear River watershed, multiple sources
of 1,4-dioxane exist in the uppermost reaches of
the watershed
•Elevated 1,4-dioxane concentrations detected in
almost the entire Cape Fear watershed
•1,4-dioxane concentrations at Pittsboro:
–Source water (Oct. 14 – Aug. 15): 16.3 μg/L  (avg.),        66μg/L (max.)
–Finished water (March 15 – April 15): 6.8 μg/L (avg.),  20μg/L (max.)
No measurable removal of 1,4-dioxane in water treatment plant (March 15 – April 15)

You can also view a National Science Foundation video on Dr. Knappe’s research on 1,4-Dioxane in the Haw River at http://www.nsf.gov/…/science_nation/capefearwatershed.jsp     Read a 2014 EPA factsheet about 1,4-Dioxane online.at the EPA website.

We are concerned not only about this chemical but what other industrial contaminants may also be in the Haw River, and in Pittsboro’s drinking water.

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