Does Holly Springs, NC Water Have PFAS?

Triangle Waterworks · informational guide

Direct answer: Yes. Holly Springs' own 2025 report shows average PFOA at 5.3 ppt and PFOS at 8.7 ppt — both above the EPA's 4 ppt limit for each. The town publishes no hardness figure for its Cape Fear River supply. The fix for both is the same all-in-one system: a carbon stage certified for PFAS removal paired with softening resin, sized after a free water analysis.

Does Holly Springs, NC water have PFAS?

Yes, according to the town's own most recent Consumer Confidence Report. Holly Springs buys its water from Harnett Regional Water, which draws from the Cape Fear River near Lillington, and the 2025 report's PFAS monitoring table shows both PFOA and PFOS averaging above the EPA's current 4 parts per trillion limit for each compound. This isn't a rumor or a third-party estimate — it's the town's own published testing data.

That puts Holly Springs in a different position than nearby Jordan Lake towns like Apex, whose most recent PFAS results came back non-detect for the two regulated compounds. Different source water, different result — and Holly Springs' own numbers are the ones worth understanding if you live there.

What does Holly Springs' water report actually show for PFOA and PFOS?

The town's 2025 Annual Drinking Water Quality Report lists PFOA averaging 5.3 ppt, with individual 2025 samples running as high as 10 ppt. PFOS averaged 8.7 ppt, with samples as high as 11 ppt. Both compounds also showed up above the limit the year before: 2024 sampling averaged 5.3 ppt PFOA and 9.6 ppt PFOS at the same site.

Two other PFAS compounds, PFNA and GenX (HFPO-DA), came back non-detect in the 2024 sampling round covered by the same report. Those are useful data points, but they don't change what the PFOA and PFOS numbers already show.

Why isn't PFAS listed as a "violation" if it's above the new limit?

Because the compliance clock hasn't started yet. EPA finalized the 4 ppt PFOA/PFOS limit in April 2024, with an original April 2029 deadline for water systems to have treatment in place. EPA has since proposed — not yet finalized, as of this writing — extending that deadline to April 2031 for systems that request it.

Holly Springs' CCR reports these PFAS numbers as monitoring data, with no MCL or violation column attached, because the town is still in the monitoring phase of a rule that isn't fully enforceable yet.

That's a real regulatory distinction, not a reason to read the numbers as harmless. The town's own Emerging Contaminants page says Harnett Regional Water already uses powdered activated carbon at the treatment plant, and describes a planned Granular Activated Carbon upgrade at the Sanford Water Filtration Facility beginning in 2028. Until that upgrade is running and years of compliance monitoring confirm it works, the numbers in the current CCR are what's actually reaching Holly Springs taps.

How hard is Holly Springs, NC water?

Holly Springs is one of a handful of Triangle towns whose water supplier publishes no hardness figure at all — not in the 2024 report, not in the 2025 report. Neither Harnett Regional Water nor the Town of Holly Springs reports a grains-per-gallon or calcium carbonate number anywhere in their Consumer Confidence Reports.

That gap doesn't mean the water is soft — it means nobody has told you what's actually coming out of your own tap. Every home's plumbing, water heater age, and fixtures respond differently to whatever hardness level is actually present, and the only way to know your number is to test at your own address, not guess from a neighboring town's published range.

What about chlorine, chloramine, and disinfection byproducts in Holly Springs' water?

They're present and legally compliant, which is a different thing from PFAS-free or byproduct-free. Holly Springs' 2025 report shows Total Trihalomethanes (TTHM) running as high as 43 ppb (40 ppb on average), against an 80 ppb legal limit. Haloacetic Acids (HAA5) measured 24 ppb, against a 60 ppb limit. Harnett Regional Water disinfects primarily with chloramine and switches to free chlorine each March to flush the distribution system, the same annual pattern other Triangle utilities follow.

Legally compliant is a ceiling EPA set based on its own risk tolerance, not a guarantee of zero risk. EPA's National Primary Drinking Water Regulations table lists TTHM's potential health effect from long-term exposure above the MCL as "liver, kidney or central nervous system problems; increased risk of cancer," and HAA5's as "increased risk of cancer."

Those are the exact compounds and exact effects EPA had in mind when it set the 80 ppb and 60 ppb ceilings — and a carbon filtration stage removes them rather than relying on staying under a legal limit.

Does boiling remove PFAS from tap water?

No — boiling does not remove PFAS, and it can actually concentrate it as the water volume decreases and the PFAS stays behind. This is one of the more common mistakes homeowners make with any contaminant they've read about: boiling handles some microbial risks, but it does nothing for PFAS and will not fix a chlorine taste either. Softeners don't touch PFAS at all — ion exchange resin targets calcium and magnesium, not fluorinated compounds.

What actually removes PFAS from Holly Springs tap water?

Two certified technologies: activated carbon certified to NSF/ANSI 53 or P473, or reverse osmosis certified to NSF/ANSI 58. Both are proven, tested removal methods — not a home remedy, not a pitcher filter bought off a shelf without checking its certification.

• The carbon side of an all-in-one system removes PFAS (when certified for it), chlorine and chloramine taste and smell, and disinfection byproducts like the TTHM and HAA5 levels above.
• The softening side handles whatever calcium and magnesium is actually in your water — protecting your water heater, dishwasher, and plumbing from scale buildup that accumulates over years, and giving you better lather and cleaner glassware in the process.
• Together in one unit, you're covering both what's causing spots on your dishes and what a softener alone was never designed to touch.

Because Holly Springs publishes no hardness figure, a free water analysis is the only way to find out exactly what your softening side needs to be sized for — while the carbon side handles PFAS and disinfection byproducts regardless of what your specific hardness number turns out to be.

Get your own address tested, not the town average

Holly Springs' own 2025 report already tells you PFOA and PFOS are present above the level EPA has set as the enforceable limit — that's worth acting on now, not waiting on a 2028 treatment upgrade for. Take our 60-second water quiz to see which all-in-one system fits your home, or book a free water analysis to get your exact hardness reading and a PFAS-certified carbon plan for your own tap.

FAQ

I just bought a house in Holly Springs and I'm worried about the PFAS numbers I've been reading about — what should I actually do? Start with a free water analysis rather than guessing from the town average. It gives you your own hardness reading plus a specific plan for a carbon stage certified to remove PFAS, so you're treating what's actually coming out of your tap rather than reacting to a townwide number alone.

Is Holly Springs' tap water safe to drink right now? It's legally compliant — there's no active MCL violation on the books because the PFAS rule's enforcement deadline hasn't arrived yet. Legally compliant isn't the same as zero PFAS, though, which is exactly why the town's own report shows detectable levels above the number EPA eventually plans to enforce.

Can I just run my water through a Brita-style pitcher filter instead of a whole-home system? Most pitcher filters use basic carbon that isn't certified for PFAS reduction, so check the certification before assuming it helps — NSF/ANSI 53 or P473 for carbon, or NSF/ANSI 58 for reverse osmosis. A whole-home carbon stage treats every tap in the house rather than one pitcher's worth at a time.

My sister lives in Apex and her water tested non-detect for PFAS — why is Holly Springs different? Different source water. Apex and Cary draw from Jordan Lake through a treatment plant with existing carbon treatment in the process; Holly Springs draws from the Cape Fear River through Harnett Regional Water, which hasn't yet completed its planned GAC upgrade. Same region, different supply chain, different current result.

Does a water softener do anything about the PFAS in my water? No. A softener is ion exchange resin built to swap out calcium and magnesium — it has no effect on PFAS, chlorine, chloramine, or disinfection byproducts. That's exactly why the all-in-one system pairs softening resin with a separate carbon stage rather than relying on softening alone.

How do I find out my own home's hardness number since the town doesn't publish one? A free water analysis measures it directly at your address, which is the only reliable number since Holly Springs and Harnett Regional Water don't publish a hardness figure in their reports. Guessing from a neighboring town's range risks sizing a system for the wrong household.

Sources

• Town of Holly Springs — 2025 Annual Drinking Water Quality Report
• Town of Holly Springs — 2024 Annual Drinking Water Quality Report
• Town of Holly Springs — Emerging Contaminants
• EPA — National Primary Drinking Water Regulations
• EPA — Per- and Polyfluoroalkyl Substances (PFAS)
• EPA — Proposed PFOA and PFOS Compliance Extension Rule
• EWG Tap Water Database — Town of Holly Springs (PWS NC0392050)

Related reading: Water Treatment in Holly Springs, NC | How to Test Tap Water Hardness in Holly Springs, NC | How to Remove PFAS from Drinking Water | Does Activated Carbon Remove PFAS from Water?