Ways to Reduce PFAS in Water & the Economic Benefits of Doing So

Roughly 45% of the nation's tap water carries at least one type of per- and polyfluoroalkyl substance (PFAS), and more than 172 million Americans are served by systems where these forever chemicals have been detected. 

Much of that contamination traces back to industrial discharge and agricultural pathways, where biosolids and irrigation water carry these chemicals onto farmland and into groundwater.

The good news here is that several proven PFAS absorption and remediation methods already exist. From simple home filters to activated carbon used in wastewater treatment and drinking water treatment, these methods pull this forever chemical out before they ever reach your glass.

Let’s discuss all the different methods being implemented to reduce PFAS in water.

The Cost of Leaving Forever Chemicals in Water

Health Burden Across the United States

When forever chemicals stay in the water supply, people pay for it in doctor visits and lost productivity.

Researchers at New York University estimated PFAS-attributable disease costs in the U.S. at $5.52 billion each year. When the analysis was expanded to include additional health conditions with less-established links to PFAS exposure, the estimated cost rose as high as $62.6 billion annually.

That burden lands on health systems, insurers, and households, not on the water utility's own ledger.

Cleaner water may ease the healthcare toll over time as exposure drops, but those savings accrue to patients and payers and do not flow back to offset the capital a municipality spends building and running treatment.

Environmental and Remediation Spending

PFAS reach farmland through biosolid application and contaminated irrigation, then move into soil, crops, and livestock, forcing testing, monitoring, and long-term cleanup across affected watersheds and the communities downstream of them.

Because these chemicals resist breakdown, remediation is rarely a one-time expense. 

Once PFAS enter groundwater, they migrate outward through aquifers, and the cost of tracking, containing, and treating that plume climbs steadily the longer it sits untreated.

Compliance Costs Estimated by the American Water Works Association (AWWA)

The American Water Works Association (AWWA) commissioned an analysis of what the 2024 federal limits will cost utilities. 

It found more than 7,000 treatment entry points will need capital upgrades, totaling $37.1 to $48.3 billion over five years, or roughly $2.7 to $3.5 billion annually.

Those figures run about double the Environmental Protection Agency's own estimate for the same rule. 

The association has warned that communities and ratepayers will shoulder most of it, on top of aging pipes, lead service line replacement, and other long-deferred infrastructure needs.

How to Reduce PFAS in Water at Home

Start by Testing Your Water

Before you buy anything, find out what you are dealing with. You cannot choose a filter without knowing your levels, so start by calling your water utility or reading its annual water quality report. 

The USGS tap-water dashboard and the EPA's interactive PFAS map both show public-system results, and private wells fall outside federal rules, so if you draw from one, you will likely need to pay a state-certified lab yourself. 

Keep in mind that utility PFAS monitoring under current EPA rules is not complete until 2027, so an absence of data today does not mean an absence of contamination.

Certified Point-of-Use Filtration

Point-of-use systems treat water at a single tap, usually the kitchen sink, where you draw water for drinking and cooking. They are the most affordable entry point and the easiest to install without a plumber.

The catch is certification. Look for filters independently certified to reduce PFAS, and match the device to the levels your testing revealed rather than assuming any carbon filter will do the job.

Pitcher and Faucet Filters

Pitcher and faucet-mounted filters are the cheapest option, and they often start around $20. 

Single-stage activated carbon models can cut long-chain PFAS by roughly 50 to 70%, though they struggle with short-chain compounds.

These work best as a first line of defense when contamination is modest. Because the carbon saturates quickly, staying on top of cartridge changes matters more here than with larger systems.

Under-Sink Reverse Osmosis Units

Under-sink reverse osmosis units are the strongest point-of-use choice. 

They are installed out of sight beneath the counter and push water through a membrane that rejects both long- and short-chain PFAS, typically for $200 to $600.

Dual-stage designs that pair a carbon pre-filter with the membrane perform on par with standalone RO in residential testing. 

The trade-off is water use, since the membrane sends roughly four gallons down the drain for every gallon it delivers to the tap, and flow slows once a membrane nears the end of its life.

Point-of-Entry Systems

Point-of-entry, or whole-house, systems treat every drop entering the home, covering showers, laundry, and every tap. 

They suit households on badly contaminated supplies where exposure through bathing or cooking is a genuine concern.

Cost climbs into the hundreds or thousands of dollars, and quality varies widely between products. 

Some poorly matched whole-house units have even been found to redeposit PFAS back into filtered water once the media saturates, so choose one independently tested and correctly sized for your specific water.

Filter Maintenance and Replacement

A filter only works as long as its media stays fresh. Follow the manufacturer's replacement schedule closely, because a spent cartridge can stop removing PFAS or even release what it has already captured back into your water.

One caveat on certification is worth stressing. NSF/ANSI 53 and 58 certifications confirm a device was tested for PFOA and PFOS reduction, but the current standards are not yet built around the 2024 EPA limits.

So treat them as evidence of capability rather than a guarantee your water will meet the new thresholds.

How to Remove PFAS From Water at Municipal Scale

Granular Activated Carbon

Granular activated carbon, or GAC, is the most studied and widely deployed municipal option, and the EPA lists it among its Best Available Technologies. 

Contaminated water passes through a fixed bed of porous carbon, and adsorption traps PFAS at the surface where liquid meets solid. 

The large internal surface area of the carbon gives PFAS plenty of sites to stick to, which is why the granular form handles high, continuous flows of contaminated water so well. 

The granular form matters here, since powdered activated carbon (PAC) cannot sit in a flow-through bed and achieves only modest PFAS removal. 

GAC works especially well on longer-chain compounds like PFOA and PFOS. Shorter-chain PFAS such as PFBS adsorb less readily, a limitation worth pilot-testing for before installation. 

Ion Exchange Resin

Ion exchange uses resin beads that swap a harmless anion, usually chloride, for negatively charged PFAS as water flows through. 

The EPA also names it a Best Available Technology, and its equipment footprint runs about a quarter that of GAC.

The resin offers higher capacity for many PFAS and captures short-chain compounds more reliably than carbon does, and its removal performance is strongly pH dependent. 

That performance comes at a price, since the media itself costs several times more per pound than carbon, and single-use resin is often incinerated rather than regenerated because conventional regeneration raises safety and disposal concerns.

Reverse Osmosis and Nanofiltration

Reverse osmosis and nanofiltration force water through high-pressure membranes that physically block PFAS. 

These processes exceed 90% removal across a wide range of compounds, including the short-chain PFAS that give carbon trouble.

The honest drawback is the reject stream. 

About a quarter of the feed water leaves as a concentrated brine with PFAS enriched several times over, and disposing of that stream is difficult and costly, which is why membranes are rarely chosen for single-contaminant removal inland.

Combined Treatment Trains

Many utilities do not rely on one technology alone. A common approach pairs GAC or ion exchange as the primary PFAS barrier with membrane polishing or pre-treatment, tuning the sequence to the plant's specific water chemistry.

Blending technologies lets operators cover both long- and short-chain PFAS while balancing capital cost, footprint, and waste volume. 

Pilot testing on the actual source water, run before any full-scale build, is what tells a utility which combination will hold up against its own contaminant mix.

Hyera's Granular Activated Carbon for PFAS Removal

Hyera's Sustainable GAC Solution

Hyera makes sustainable, high-performing granular activated carbon built specifically for water treatment and PFAS work. 

Rather than mining coal or importing coconut char, Hyera manufactures its carbon in the U.S. from renewable biomass, including almond, walnut, and hazelnut shells and sustainably sourced forestry residues.

The result is a carbon-negative product that still hits the marks municipalities need, tested against iodine number, ash content, and pore distribution and aligned with NSF, AWWA, and ASTM benchmarks. 

For a plant manager, that means proven PFAS performance without the supply-chain risk and emissions of conventional media.

Integration Into Existing Treatment Systems

Hyera's role is to help you specify and supply the right media, not to redesign your plant. That starts with sizing input drawn from your flow rates and PFAS profile, followed by media delivery and scheduled exchange as beds approach saturation.

To specify correctly, Hyera works from your plant data, the water chemistry, contaminant mix, and throughput that determine how the carbon will perform. 

Because sustainable, high-performing GAC drops into fixed-bed configurations already common in treatment, adoption rarely means reengineering existing infrastructure.

Long-Term Cost Reduction for Municipal Budgets

Media choice shapes a treatment plant's operating costs for years. 

Carbon that lasts longer between change-outs and delivers consistent adsorption reduces both the frequency and the labor of media replacement, which is where much of the recurring expense lives.

Hyera's sustainable, high-performing carbon is engineered for that extended service life. 

In practical terms, choosing a GAC that lasts longer and requires fewer change-outs can reduce treatment costs over time. The economics section below breaks down these cost savings in more detail.

Managing Spent Media After PFAS Removal

Spent Media and Concentrated Waste Streams

Every technology described above separates PFAS from water rather than destroying it, so the captured contaminant does not disappear. 

It ends up concentrated in spent carbon, exhausted resin, or membrane brine, all of which become the next operational step once a bed or unit is spent.

Planning for that step belongs in the treatment design from day one. 

Researchers who mapped spent media pathways note that GAC and anion exchange remain industry standards partly because they achieve high effluent quality with a favorable ratio of water treated to residual produced.

Thermal Reactivation

Spent granular carbon can be shipped to a high-temperature furnace, where heat drives off and destroys the adsorbed PFAS and restores the carbon for reuse. 

Full-scale reactivation has demonstrated greater than 99.9% destruction of targeted PFAS under proper operating conditions.

Reactivation stands apart from disposal because it closes the loop rather than moving the problem elsewhere. 

The same carbon returns to service instead of becoming permanent waste, which cuts both landfill volume and the greenhouse emissions tied to mining, processing, and shipping virgin media.

Disposal and Liability Considerations

Where reactivation is not used, spent media typically goes to a landfill or an incinerator. 

Landfilling does not destroy PFAS; it parks the chemicals in a sink that can become a future source, while incineration demands very high temperatures to fully break the carbon-fluorine bond.

Both routes carry regulatory and liability uncertainty as PFAS rules continue to tighten. 

A utility that lands spent media in a landfill today could face cleanup questions tomorrow, which makes destruction-based options increasingly attractive from a long-term risk standpoint.

The Economic Benefits of PFAS Removal

Avoided Healthcare Expenditure

Those savings accrue broadly across households, insurers, and public health budgets. 

They can also compound over time: once PFAS exposure is reduced, blood concentrations gradually decline as the body eliminates the chemicals, although this can take years because many PFAS have long biological half-lives. 

Lower blood levels mean lower cumulative exposure and, potentially, fewer PFAS-related health costs over time.

Lower Lifetime Costs Than Alternative Technologies

PFAS treatment technologies cost considerations tend to favor carbon once you look past the sticker price. 

A life-cycle cost meta-analysis found GAC and ion exchange share a similar capital range of roughly $0.01 to $0.45 per cubic meter treated, while membrane systems like reverse osmosis run higher, around $0.40 to $0.51.

Carbon's edge sharpens against the alternatives. Ion exchange offers higher capacity but costs more per pound of media, and membranes add energy-intensive operation plus expensive brine disposal.

So GAC often wins on total lifetime cost for utilities that do not need membrane-level short-chain removal.

Savings From Carbon Reactivation

The biggest recurring expense in carbon treatment is media, so reactivating and reusing it changes the math. 

Sending spent GAC back through a furnace and returning it to service costs less than buying virgin carbon batch after batch.

Reactivation also trims landfill disposal fees and the embedded energy cost of manufacturing new media from scratch. 

Over a multi-year supply contract, that reuse loop can meaningfully lower a plant's operating budget compared with a single-use approach that buys and discards carbon repeatedly.

Reducing Forever Chemicals at Every Scale

Left in the water, forever chemicals cost billions in healthcare and cleanup while utilities face multi-billion-dollar compliance bills. 

The path forward runs from certified home filters through municipal GAC, ion exchange, and membranes, followed by responsible handling of the spent media every method leaves behind. 

Hyera is positioned to support that effort, supplying sustainable, high-performing granular activated carbon that helps municipal governments cut the health and environmental costs of agricultural waste and PFAS while keeping treatment budgets in check. 

If your treatment plant is weighing its options, reach out to us to learn how our high-performance granular activated carbon can fit your system. 

Frequently Asked Questions

How do you get rid of PFAS in water?

Use proven treatment: activated carbon, ion exchange, or reverse osmosis. Test your water first, then match the method to your contamination levels and scale.

Does activated carbon remove PFAS?

Yes. Granular activated carbon effectively adsorbs PFAS, especially long-chain compounds like PFOA and PFOS, and is a Best Available Technology named by the EPA.

How much does it cost to remove PFAS?

At home, filters range from about $20 for pitchers to several thousand for whole-house systems. Nationally, utility compliance is estimated at $2.7 to $3.5 billion yearly.

Do PFAS cost money to municipalities?

Yes. Municipalities and ratepayers face billions in treatment and compliance costs, while the wider healthcare burden of PFAS falls on health systems and households.

How do you avoid forever chemicals in water?

Filter drinking water with a certified device, check your utility's reports, test private wells, and support source-water protection that keeps PFAS out to begin with.