GenX — formally known as HFPO-DA — is a synthetic PFAS compound discharged into the Cape Fear River by Chemours (formerly DuPont) near Fayetteville, NC for decades before public disclosure in 2017.
What Is GenX?
GenX is part of the PFAS ("forever chemicals") family — a large group of synthetic chemicals that break down very slowly in the environment. GenX was developed as a replacement for PFOA after PFOA was phased out, and it is now the subject of its own state and federal regulatory attention.
How Serious Is the Contamination?
The Cape Fear River is the primary water source for CFPUA (Cape Fear Public Utility Authority), which serves Wilmington and surrounding New Hanover County. GenX detections in the river and in finished water have been extensively documented by state regulators and researchers since 2017.
In 2024, the EPA set limits of 4.0 parts per trillion for PFOA and PFOS and 10 ppt for HFPO-DA (GenX). In May 2026 the EPA proposed keeping the PFOA and PFOS limits, letting utilities ask for more time (to 2031) and rescinding the GenX limit; those proposals are not final. North Carolina's non-regulatory GenX health goal is 140 ppt (NC DHHS). CFPUA has implemented granular activated carbon and other enhanced treatment and publishes its ongoing monitoring results at cfpua.org.
Why PFAS Are Regulated
The EPA cites peer-reviewed research associating PFAS exposure with a range of health effects — including effects on the liver, immune system, and development — as the basis for its drinking water standards. For guidance about your own health, consult your physician or state health department.
What Wilmington Homeowners Can Do
1. Get your water tested. CFPUA's annual report gives city-wide averages — not your individual tap level. ClearFlow offers free in-home PFAS testing.
2. Consider a reverse osmosis system. The EPA identifies reverse osmosis among the treatment technologies for PFAS. Reduction performance is defined by each system's manufacturer specifications and certifications.
3. Check what your current filter is certified for. Standard pitcher filters are generally not designed for PFAS — look for a product specifically certified for PFAS reduction.
4. Ask about whole-home options. Some homeowners choose point-of-entry treatment in addition to a drinking water system.
Call ClearFlow at (843) 742-1196 to schedule a free in-home PFAS test.
