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The Cape Fear River — the primary drinking water source for the greater Wilmington area — has been affected by GenX and other PFAS compounds associated with upstream discharges from the Chemours facility in Bladen County. This is a documented, ongoing matter that has been the subject of state investigations, a consent order, and extensive news coverage.
ClearFlow tests your home's water at no cost and explains a written report during the visit. Most readings are taken at your tap during the visit. PFAS, lead, bacteria and similar contaminants need a certified lab, and we'll arrange one when your concerns or results call for it.
- Lab testing for PFAS/GenX when needed
- Free in-home test — no obligation to purchase
- On-site results during the visit
- Serving coastal NC
- Written report of your results
Wilmington Water Quality Summary
- Water Source
- Cape Fear River (CFPUA)
- Primary Concerns
- PFAS/GenX, Disinfection Byproducts, Saltwater Intrusion
- Water Hardness
- Soft on CFPUA water (50 ppm average in 2025, CFPUA 2025 water quality report); wells vary
- Utility
- Cape Fear Public Utility Authority
- Disinfectant
- Chlorine, after ozone and UV at the Sweeney plant (CFPUA 2025 water quality report)
- Notable Issue
- GenX PFAS — ongoing monitoring & enforcement
Where Wilmington's city water comes from
- SourceThe Cape Fear River (about 80% of CFPUA customers)
- TreatmentCFPUA Sweeney plant, with granular activated carbon filters since October 2022
- DisinfectionChlorine, after ozone and UV
- Your tapThen your own pipes and water heater, which our free test checks
How hard is Wilmington water?
Where we test
Also serving the Upstate: Greenville and Spartanburg
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 4.0 parts per trillion each (compliance due 2029), 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 disinfects Cape Fear River water with ozone, UV and chlorine (CFPUA 2025 water quality report). Disinfection byproducts (TTHMs and HAA5) are regulated, and CFPUA reports its results each year in its water quality report.
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.
Wilmington Water Quality Challenges
The Cape Fear River watershed faces some of the most documented water quality issues in the entire Southeast. Here's what every Wilmington homeowner should understand.
PFAS / GenX in the Cape Fear
GenX and other PFAS compounds discharged into the Cape Fear River have been the subject of extensive state and federal regulatory action. PFAS resist conventional treatment, and the EPA now sets federal limits for several of them. CFPUA uses GAC filtration and publishes its monitoring results; homeowners who want treatment at the tap typically use RO or whole-house carbon.
Chloramine & Disinfection Byproducts
CFPUA disinfects Cape Fear River water with ozone, UV and chlorine (CFPUA 2025 water quality report). The river's organic-rich water can form TTHMs and HAAs during disinfection; both are federally regulated, and CFPUA reports its results each year. Standard carbon filtration removes chlorine taste and smell.
Saltwater Intrusion in Coastal Areas
Barrier island communities, tidal creek neighborhoods, and low-lying coastal areas of Brunswick and New Hanover counties face saltwater intrusion into shallow aquifers. Elevated sodium, chloride, and TDS make well water undrinkable and corrosive to plumbing. Sea level rise is accelerating this problem throughout coastal NC.
Iron & Tannins in Well Water
Coastal plain geology throughout Brunswick and Pender counties produces iron-rich, tannic groundwater. Iron above 0.3 mg/L leaves orange-red staining on sinks, showers, laundry, and irrigation systems. Tannins from decaying organic matter turn water brown and give it an earthy taste. Both are treatable with the right filtration system matched to your water test results.
Lead in Older Wilmington Homes
Pre-1986 homes in Wilmington's historic downtown, midtown, and older subdivisions may contain lead service lines or lead solder at pipe joints. Water chemistry influences how readily lead leaches from plumbing. A ClearFlow in-home test measures lead directly at your tap — the only way to know your actual level.
Agricultural Runoff & Nitrates
The Cape Fear River basin is heavily farmed. Livestock operations and row crops throughout Bladen, Columbus, and Sampson counties can contribute nitrates and pesticides to groundwater used by rural well owners. The EPA's nitrate limit of 10 mg/L is set largely because of risks to infants under six months.
What ClearFlow Tests For in Wilmington
We focus on Wilmington's documented water questions: PFAS/GenX, disinfection byproducts, lead, iron, tannins and coastal water. Most readings are taken at your tap during the visit. PFAS, lead, bacteria and similar contaminants need a certified lab, and we'll arrange one when your concerns or results call for it. Results on-site during the visit, with a written report included at no charge.
- PFAS / GenX Screening
- TTHMs & HAAs
- Chloramine Level
- Lead & Copper
- Iron & Manganese
- Tannins
- Sodium & Chloride
- pH & Alkalinity
- TDS
- Nitrates & Nitrites
- Bacteria (Coliform)
- Hardness (GPG)
ClearFlow's Wilmington PFAS Expertise
ClearFlow works regularly with PFAS-related treatment in coastal NC. We install and service granular activated carbon whole-house systems and under-sink reverse osmosis units; PFAS reduction performance for each system is defined by the manufacturer's published specifications and certifications and varies with water conditions.
We serve the full greater Wilmington area including Leland, Hampstead, Castle Hayne, Carolina Beach, Wrightsville Beach, and outlying Brunswick and Pender county communities. We test both city and well water.
A free in-home test from ClearFlow shows you what's in the water at your own tap, with no obligation to purchase.
Areas We Serve Near Wilmington
- Wilmington
- Leland
- Carolina Beach
- Wrightsville Beach
- Hampstead
- Castle Hayne
- Ogden
- Myrtle Grove
- Monkey Junction
- Bolivia
- Shallotte
- Surf City
Services in Wilmington
- Water Softeners in Wilmington
- Whole-House Water Filtration in Wilmington
- Reverse Osmosis in Wilmington
- Well Water Treatment in Wilmington
Related guides
- Water Filtration & Testing in Wilmington
- Wilmington, NC Water Quality Report
- GenX in Wilmington's Water: What You Need to Know
- Water Softener Cost in Myrtle Beach, SC
- Well Water Testing SC & NC
Frequently asked questions
Is Wilmington, NC tap water safe to drink?
Wilmington's water is treated by CFPUA (Cape Fear Public Utility Authority) and meets federal standards, but the Cape Fear River basin has been the center of one of the nation's most significant PFAS (GenX) contamination crises. Independent testing is strongly recommended for every Wilmington household.
What is GenX and is it in Wilmington water?
GenX is a PFAS compound associated with discharges into the Cape Fear River, which is Wilmington's water source. It has been the subject of extensive state and federal regulatory action, and CFPUA publishes ongoing monitoring results. PFAS needs a certified lab test, and ClearFlow can arrange one when your concerns or results call for it.
Does Wilmington, NC have hard water?
Wilmington city water, drawn largely from the Cape Fear River, is generally on the soft side; CFPUA publishes current figures in its annual water quality report. Coastal groundwater and private wells can carry higher mineral loads, so your in-home test measures your actual level.
What water problems are most common in Wilmington homes?
The most common issues are PFAS/GenX contamination, disinfection byproducts, saltwater intrusion in well water near the coast, iron and tannins in private wells, and occasional taste/odor issues from organic matter in the Cape Fear River.
Does Wilmington use chlorine or chloramine to treat water?
CFPUA disinfects with chlorine, after ozone and UV treatment at the Sweeney plant, according to its CFPUA 2025 water quality report. Standard carbon filtration removes chlorine taste and smell, and our free test confirms what is in your tap.
How do I get a free water test in Wilmington, NC?
Call ClearFlow at (843) 742-1196 or book online. Our Wilmington-area specialists will visit your home, test your water on-site, provide a written report at no charge, and arrange certified lab testing for PFAS/GenX if your concerns or results call for it.