GenX Contamination In Drinking Water: What You Need To Know
Eric Roy, Ph.D. | Scientific Founder
****Updated November 18, 2017 to include water filter performance data ****
There has been some major news coverage about "GenX" and other pre GenX perfluoroalkyl/polyfluoroalkyl substances (PFASs) contamination in North Carolina. Whenever something like this makes it into the news, the facts can quickly become obscured, so the aim of this article is to summarize a few key things to know about GenX and other PFASs in drinking water.
What Is GenX?
GenX is a trade name for a chemical (deduced structure shown above) that went into production around 2010 as an alternative to a perfluorooctanoic acid (also known as PFOA or C8) in the synthesis of PTFE (ie Teflon). GenX is therefore essential for the production of common household products including non-stick pans, firefighting foam, and common outdoor fabrics (e.g. Gore-Tex).
Why Do We Care About GenX And Chemicals Like It?
It's pretty simple: 1. These chemicals are known to be toxic (and this link too) 2. They are persistent in the environment, which means that they don't break down, and can contaminate water far from the contamination source.
Is GenX Regulated By EPA?
No. Which means that there are no regulatory limits, and municipalities are not required to test for it. There are a lot of chemicals that fall into this category.
Why Is This Such A Big Problem In North Carolina?
How To Filter GenX And Other PFASs From Drinking Water
At Hydroviv, we custom-build water filters using different technology than reverse osmosis. Basically, we custom-formulate filter cartridges with filtration media that best matches the problems in each customer's water. There's a lot of proprietary stuff behind what we do, but in the name of transparency we wanted to give more information that we'd normally give about what we are doing to formulate filters for highly soluble compounds like GenX.
1. We formulate our submicron carbon blocks with a blend of activated carbons and elevated levels of a highly porous metal oxide sorbant blend that other fluoroalkyl compounds have been shown to stick to in the scientific literature.
2. We tighten up the pore sizes of our filters, which slows down the flow and increases the amount of time that the water is in contact with the filtration media, thus improving the overall effectiveness of the filter, when compared to granular or powdered media.
**** Update 11/18/2017**** Our under sink and fridge line water filters have been independently shown to filter GenX and other PFASs to undetectable levels in tap water drawn from the Cape Fear River.
Filters with these considerations can be ordered through our product's page, and our experts will automatically use your shipping address to know if you are part of the impacted region.
What Are Official Positions On The Situation?
Dupont: In summary, they are saying that even though Chemours is a Dupont spinoff company, they have no comment because it's now a separate entity.
Chemours: Deafening silence
Municipalities in Southeast North Carolina: "We are in full compliance of Federal Regulations"
Hydroviv: No kidding. You can't be out of compliance if it's not a regulated chemical.
Want More Information About GenX and PFASs In Drinking Water?
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- Eric Roy