Free Water Testing in
Wilmington, NC

The GenX Crisis: What Wilmington Homeowners Need to Know

In 2017, researchers at UNC Wilmington made a discovery that would put Wilmington on the national map for the wrong reasons: GenX, a replacement PFAS compound, had been discharged into the Cape Fear River for over three decades by the Chemours plant in Bladen County. The compound was detected in Wilmington's finished drinking water, and the discovery led to state investigations, litigation, and a consent order governing discharges from the facility.

GenX is one member of a larger family of per- and polyfluoroalkyl substances (PFAS) — synthetic chemicals used in industrial processes and consumer products. PFAS are notable for their persistence: they break down very slowly in the environment. The EPA's 2024 rule set the maximum contaminant level for PFOA and PFOS at 4 parts per trillion, and the agency cites peer-reviewed research associating PFAS exposure with a range of health effects as the basis for that standard.

CFPUA has invested significantly in granular activated carbon (GAC) filtration to reduce PFAS levels in finished water, and publishes its monitoring results. Homeowners who want additional treatment at home typically use a point-of-use reverse osmosis system or a whole-house activated carbon system — both of which ClearFlow installs and services in the Wilmington area. Reduction performance for any system is defined by the manufacturer's published specifications and certifications.

Beyond PFAS, CFPUA uses chloramine to disinfect Cape Fear River water — a necessary step given the river's high organic load, but one that introduces its own concerns. Chloramine reacts with river-sourced organic matter to produce elevated TTHMs and HAAs in the distribution system. Additionally, chloramine corrodes certain types of rubber fittings and gaskets, which can introduce additional contaminants from household plumbing into finished water.

For the growing number of Wilmington-area residents on private well water — particularly in Brunswick County (Leland, Bolivia, Shallotte), Pender County (Hampstead, Surf City), and rural New Hanover County — the concerns are different but equally serious. Coastal plain geology produces iron-rich, tannin-heavy groundwater that stains laundry and fixtures orange-brown. Saltwater intrusion affects aquifers near the coast. And agricultural land in the Cape Fear basin can contribute nitrates to shallow wells, which the EPA regulates at 10 mg/L largely because of risks to infants. A well water panel from ClearFlow covers these concerns at no charge.