Best Practices for PFAS Management: Ensuring Safe Water and Environmental Integrity

Introduction

Per- and polyfluoroalkyl substances (PFAS) have emerged as one of the most concerning environmental contaminants of our time. These man-made chemicals, widely adopted for their water- and grease-resistant properties, are ubiquitous, found in everything from non-stick cookware to firefighting foams. As of July 2025, recent studies indicate that over 99% of Americans have detectable levels of PFAS in their blood serum. The public’s growing alarm is warranted: PFAS have been linked to serious health risks, including cancer, liver damage, and immune system dysfunction. As regulations become stricter and public awareness heightens, the need for effective PFAS management practices is paramount for environmental engineers, municipal directors, and plant operators.

This article outlines the best practices for PFAS management, equipping professionals with a comprehensive analysis of strategies for mitigation, regulatory compliance, and community engagement.

Program management sits one level above technology selection. Within the broader field of PFAS wastewater treatment, this article focuses on the organizational discipline that surrounds the equipment: how a utility inventories its exposure, sequences capital spending, structures procurement, and sustains performance across a twenty- to thirty-year asset life. A plant can install the correct adsorption media and still fail its community if the monitoring cadence, residuals pathway, funding plan, and communication strategy were never formalized. The sections that follow treat those elements as engineering deliverables in their own right, with the same rigor normally reserved for hydraulic sizing or media selection.

Understanding PFAS: An Overview

What Are PFAS?

PFAS are a group of over 4,700 synthetic chemicals characterized by their strong carbon-fluorine bonds, which make them resistant to degradation. Common types include PFOA, PFOS, and GenX. Their resilience has led to widespread environmental persistence and bioaccumulation, raising significant health and safety concerns.

Regulatory Landscape

As of 2025, the U.S. Environmental Protection Agency (EPA) has proposed the establishment of Maximum Contaminant Levels (MCLs) for several key PFAS compounds, aiming for a target of 4 parts per trillion for PFOA and PFOS. States and municipalities have also begun adopting more stringent regulations, necessitating robust PFAS management strategies.

Identifying Sources of PFAS Contamination

Industrial and Commercial Sources

PFAS may enter water systems from a variety of sources, including:

• Manufacturing Facilities: Industrial processes that use PFAS-containing materials can lead to significant water contamination.
• Landfills and Wastewater Treatment Plants: PFAS can leach from landfills and are often found in biosolids applied to agricultural land.
• Firefighting Training Facilities: The use of PFAS-based firefighting foams has resulted in contamination of groundwater.

Surfactants and Consumer Products

Consumer products, like stain-resistant fabrics and non-stick cookware, can also leach PFAS into the environment. Stakeholders need a comprehensive understanding of these sources to implement effective management solutions.

Comprehensive PFAS Management Strategies

1. Source Identification and Monitoring

A. Conducting Inventory Assessments

Performing thorough inventory assessments of potential PFAS sources is crucial. Companies should:

• Conduct surveys of facilities that utilize PFAS in manufacturing.
• Monitor discharge from wastewater treatment plants.
• Collect data from landfills to identify PFAS leaching.

B. Regular Environmental Testing

Routine monitoring of groundwater, surface water, and soil can help identify contamination sites early. Utilizing test methods validated by the EPA, such as EPA Method 537.1, gives stakeholders confidence in their data.

2. Advanced Treatment Technologies

A. Filtration Systems

Filtration systems, such as:

• Granular Activated Carbon (GAC): Highly effective at adsorbing PFAS, GAC systems have been successfully deployed in municipal water treatment plants.
• Reverse Osmosis (RO): Particularly effective for removing long-chain PFAS, RO systems can provide clean drinking water when implemented correctly.

B. Emerging Technologies

• Advanced Oxidation Processes (AOPs): Technologies like ozone and UV-light combined with hydrogen peroxide can break down PFAS compounds into less harmful substances.
• Ion Exchange Resins: New resin technologies specifically targeting PFAS are in development, showing promise in municipal applications.

3. Regulatory Compliance

A. Understanding Updated Guidelines

Staying abreast of current regulations is essential for compliance. As state regulations vary, local authorities should:

• Regularly consult the EPA’s updated PFAS guidelines.
• Review state-specific regulations that may impose stricter limits.

B. Reporting and Transparency

Transparency with the community and stakeholders is critical. Stakeholders are encouraged to:

• Report PFAS levels in accordance with local laws.
• Update the public on mitigation efforts and results.

4. Community Engagement and Education

A. Stakeholder Involvement

Engaging with the community ensures that PFAS management strategies align with public concerns. Effective practices include:

• Public Forums: Facilitate discussions about PFAS risks and management strategies.
• Educational Campaigns: Inform communities about PFAS sources and promote collective action.

B. Collaborating with Experts

Collaboration with environmental organizations and academic institutions can provide valuable expertise. Forming partnerships helps leverage community resources for PFAS management.

5. Long-term Monitoring and Maintenance Plans

Establishing a long-term monitoring framework is essential for sustaining progress in PFAS management. Activities should include:

• Regular evaluation of treatment efficacy.
• Ongoing water quality assessments to monitor PFAS levels over time.

PFAS Program Management: Subcategory Overview

A mature PFAS program is not a single project. It is a portfolio of interlocking workstreams, each with its own
decision points, funding mechanism, and technical owner. The subsections below map the core disciplines that make up
PFAS program management and explain where each one carries the most weight. Utilities that treat these as sequential
phases — design first, then funding, then sustainability — typically discover late in the process that
early decisions foreclosed options they later needed.

Sustainable PFAS Solutions

Sustainability in a PFAS context is a narrower and more technical question than the word usually implies. Because
PFAS are not destroyed by conventional separation technologies, adsorption and membrane processes transfer the mass
rather than eliminate it, creating spent media, reject brine, or regeneration eluate that must go somewhere.
Evaluating sustainable PFAS
solutions means accounting for that full mass balance: energy intensity per thousand gallons treated,
carbon footprint of virgin versus reactivated media, transport distance to a licensed disposal or destruction outlet,
and whether the chosen residuals pathway will remain legally available in five years.

Typical decision inputs include media exhaustion rate (bed volumes to breakthrough), the availability of
high-temperature reactivation with verified destruction efficiency, and whether a single-pass or lead-lag vessel
configuration better matches the influent profile. Lead-lag arrangements commonly extend usable media life by roughly
20–40% relative to single-pass operation because the lag vessel captures early breakthrough while the lead vessel
is driven closer to true exhaustion. The limitation is capital: a second vessel train, additional valving, and the
sampling ports needed to confirm the intermediate breakthrough point all add first cost. For small systems, that
premium can be difficult to justify, which is why sustainability screening should occur during preliminary design
rather than after equipment procurement.

PFAS System Design

Design translates raw occurrence data into a treatment train that will hold up under regulatory scrutiny. Sound
PFAS system design begins with a
defensible characterization of the source water — not a single grab sample, but a seasonal dataset that captures
variability in total organic carbon, competing anions such as sulfate and nitrate, and the specific PFAS congener
distribution. Short-chain compounds like PFBA and PFBS break through adsorption media far earlier than PFOA and PFOS,
so a design validated only against long-chain removal will underperform once the compliance monitoring list expands.

Practical design parameters worth fixing early include empty bed contact time (EBCT), which for granular activated
carbon in drinking water service typically falls in the approximate range of 10–20 minutes per vessel, and
hydraulic loading rate, generally around 4–8 gpm/ft². Ion exchange systems run at shorter contact times
— often 2–5 minutes EBCT — which reduces vessel footprint but raises media unit cost and narrows the
tolerance for organic fouling. Redundancy philosophy matters as much as the sizing itself: a design that cannot take
one vessel offline for media changeout without violating a permit condition has embedded an operational failure into
the capital asset. Pilot testing on the actual source water, run long enough to observe breakthrough rather than
merely initial removal, remains the single highest-value design expenditure.

PFAS Capital Improvement Plan

PFAS treatment rarely arrives as a standalone project. It lands inside an existing capital program that already
carries main replacement, storage rehabilitation, and pump station work, and it frequently consumes a share of
available debt capacity large enough to displace those commitments. A credible
PFAS capital improvement
plan therefore sequences PFAS work against the rest of the portfolio, identifies which projects can be
deferred without creating reliability risk, and models the rate impact across the full financing term rather than the
construction period alone.

The operating cost profile is what most commonly surprises finance staff. Capital installation is a one-time event,
but media replacement recurs indefinitely, and annual media cost frequently exceeds the annualized debt service on the
vessels themselves within the first decade. Plans that budget only for construction routinely require an unplanned
rate action three to five years after startup. Sound practice is to carry media replacement, residuals disposal,
compliance sampling, and laboratory analysis as a distinct recurring line item from the outset, and to build in
contingency for the possibility that the regulated analyte list grows. Funding pathways — State Revolving Fund
loans, emerging contaminant grant allocations, and settlement proceeds from manufacturer litigation — each carry
different eligibility rules and application calendars, and missing a cycle can delay a project by a full year.

Rural Water PFAS Solutions

Small and rural systems face a fundamentally different problem than large municipal utilities, and applying urban
program templates to them produces plans that cannot be executed. A system serving 800 connections may have no
full-time operator, no laboratory relationship, no engineering staff, and a rate base too small to absorb a
multi-million-dollar capital project. Effective
rural water PFAS solutions
therefore lean toward approaches that minimize operator burden and fixed overhead: skid-mounted or containerized
treatment units, media leasing and service contracts that convert capital expense into a predictable operating fee,
regional interconnection with a neighboring system that has already treated, or well abandonment and replacement where
an uncontaminated aquifer is accessible.

Consolidation deserves honest evaluation rather than reflexive dismissal. Where an interconnection is physically
feasible, the lifecycle cost of purchasing finished water is often lower than owning and operating a small treatment
plant, and it transfers the compliance and staffing burden to an organization equipped to carry it. The trade-offs are
loss of local control, exposure to wholesale rate increases, and the political difficulty of dissolving a governance
structure. Where treatment must remain on-site, specifying vendor-supported service agreements that include media
changeout, sampling, and reporting is generally more reliable than assuming a part-time operator will sustain the
regimen unaided.

Comparing PFAS Program Management Approaches

The table below summarizes how the main program pathways differ across the criteria that most often drive the
decision. Relative cost figures are indicative rather than prescriptive; site-specific occurrence data, existing
infrastructure, and funding eligibility will shift the ranking considerably.

Selection & Specification Framework

Choosing among these pathways is rarely a technology question in isolation. The determining variables are
occurrence severity, system size, staffing depth, and financing capacity — usually in that order. The framework
below works through each in turn.

Step 1: Establish the Occurrence Baseline

No program decision should be made on a single sampling round. Establish at least four quarterly datasets covering
each entry point, using accredited laboratory methods appropriate to the matrix, and confirm the congener
distribution rather than a summed total. Rigorous PFAS
monitoring and analysis practice is what separates a defensible design basis from an expensive guess: detection
limits, extraction technique, and field blank handling all materially affect whether a reported concentration should
drive a capital decision. Where results sit near an action level, the correct response is usually more data, not
immediate procurement.

Step 2: Screen Treatment Technologies Against the Baseline

Once occurrence is characterized, technology screening becomes tractable. Granular activated carbon, ion exchange,
and high-pressure membranes each have well-defined performance envelopes, and the choice turns on congener mix,
background organics, available footprint, and residuals handling capability. A structured review of the available
PFAS
treatment systems should precede any conceptual cost estimate, because the estimate is only meaningful once the
process train is fixed. Screening should be documented in a technical memorandum that survives staff turnover; the
reasoning behind a rejected alternative is frequently requested years later during rate hearings or litigation
discovery.

Step 3: Map Regulatory and Liability Exposure

Program scope is set as much by legal exposure as by engineering necessity. Utilities occupy an awkward position:
they are passive receivers of contamination they did not create, yet they carry the compliance obligation and, in
some jurisdictions, downstream liability for biosolids and residuals. Understanding the trajectory of
PFAS regulatory and legal developments
— including cost-recovery settlements, passive-receiver protections, and state limits that run ahead of federal
standards — directly affects how much contingency a plan should carry and whether pursuing litigation proceeds
is worth the administrative effort. Legal review belongs in the planning phase, not after construction.

Step 4: Set the Planning Horizon — Interim Versus Long-Term Commitments

This step is where sustainability and durability diverge, and the distinction is worth stating plainly. The
sustainability question asked earlier concerns environmental performance and residuals stewardship within a chosen
treatment approach. The planning-horizon question is different: it asks how long the chosen approach must remain
viable, and what happens when the regulatory or technological ground shifts beneath it. Evaluating
long term PFAS solutions means committing
to assumptions about analyte-list expansion, media supply pricing over a twenty-year horizon, and the point at which
on-site destruction technologies become commercially defensible rather than experimental.

Practically, this produces two distinct procurement postures. An interim posture — leased media, temporary
skids, bottled-water or point-of-use bridging — buys time at high unit cost and is appropriate when regulatory
requirements are unsettled or when a permanent source change is already in motion. A long-horizon posture accepts
higher capital commitment in exchange for lower unit cost and greater control, and it should be paired with vessel
sizing and site layout that can accommodate an additional treatment stage without demolition. Choosing the interim
path indefinitely, by default rather than by decision, is the most common and most expensive error in this
category.

Step 5: Match the Approach to Organizational Capacity

The final filter is honest assessment of what the organization can actually operate. A treatment train that
requires daily differential-pressure logging, quarterly media sampling, and coordinated changeout scheduling is
straightforward for a utility with a certified operations staff and unmanageable for a system relying on a
contract operator who visits twice weekly. Where capacity is thin, shifting complexity to a service contract is not
a compromise — it is the correct engineering decision, and it should be specified as such in the project
documents rather than discovered during the first year of operation.

Field Notes

Commissioning and Startup Considerations

PFAS treatment commissioning differs from conventional startup in one important respect: performance cannot be
confirmed visually or with a field meter. Verification depends entirely on laboratory turnaround, which typically
runs two to three weeks, so the commissioning schedule must accommodate a confirmation loop rather than assuming
pass-on-first-sample. Virgin media should be flushed and conditioned per manufacturer instruction before the first
compliance sample; fines carryover during initial operation can produce turbidity excursions and, in ion exchange
systems, transient release of preservation chemicals. Establish the intermediate sampling port on lead-lag
configurations during construction, not afterward — retrofitting one into a pressurized vessel train is
disproportionately expensive.

Common Specification Mistakes

Several recurring specification errors show up across projects regardless of system size. Specifying media by brand
name without a performance basis leaves no defensible ground for evaluating alternates and invites change orders.
Sizing on average day demand rather than maximum day understates required contact time at exactly the moment when
demand peaks and detention drops. Omitting a residuals handling provision from the contract documents transfers an
unpriced obligation to operations. And writing acceptance criteria around initial removal efficiency — which
virtually any correctly installed system will meet on day one — rather than sustained performance to a defined
bed-volume threshold gives the utility no recourse when breakthrough arrives early.

Operations and Maintenance Across Approaches

Maintenance burden varies more by program pathway than by technology. Owned-and-operated treatment concentrates
effort in media management, differential pressure monitoring, and sampling logistics. Service-contract arrangements
shift most of that to the vendor but require the utility to maintain contract oversight, verify sampling chain of
custody, and retain enough technical literacy to evaluate vendor performance claims. Interconnection largely
eliminates treatment O&M but introduces wholesale contract administration and shared-infrastructure maintenance
obligations. None of these is maintenance-free; the question is which category of work the organization is better
equipped to sustain.

Design Details & Standards

Applicable Standards and Reference Methods

Programs should be documented against the recognized reference framework rather than internal convention.
Analytical work in drinking water commonly references EPA Method 537.1 and EPA Method
533, with EPA Method 1633 applied to wastewater, biosolids, and other non-potable matrices.
Treatment media and system components in potable service should carry NSF/ANSI 61 certification for
drinking water system components and NSF/ANSI 372 for lead content. Activated carbon products are
commonly specified against AWWA B604 for granular activated carbon, and ion exchange resins against
the relevant AWWA and ASTM material standards. Where residuals are managed as regulated waste, applicable RCRA
handling and manifesting requirements govern transport and disposal documentation.

Key Parameters That Differ by Approach

Empty bed contact time, hydraulic loading rate, and bed volumes to breakthrough are the three parameters that most
directly determine lifecycle cost, and they behave differently across technologies. Granular activated carbon
typically requires longer contact time and larger vessels but tolerates variable water quality reasonably well. Ion
exchange achieves compliance at shorter contact times and smaller footprint but is more sensitive to competing anions
and organic fouling, and single-use resin creates a larger and more tightly regulated residuals stream. Membrane
processes achieve broad removal across congener classes but generate a concentrate stream that requires its own
disposal pathway — frequently the constraining factor for inland systems without an available discharge
outlet.

Specification Checklist

• Seasonal source water characterization completed, including congener distribution and competing constituents
• Pilot or full-scale performance data run to observed breakthrough, not initial removal only
• Empty bed contact time and hydraulic loading rate stated as design requirements, not vendor recommendations
• Redundancy philosophy defined: ability to isolate one vessel without permit violation
• Intermediate sampling ports specified on all lead-lag vessel trains
• Media performance acceptance criteria written to a bed-volume threshold with defined test protocol
• Residuals handling, transport, and disposal pathway identified and contractually assigned
• Recurring operating cost — media, sampling, laboratory, disposal — carried as a distinct budget line
• Physical and hydraulic provision for an additional treatment stage
• Operator training, sampling protocol, and reporting responsibilities documented before substantial completion

Frequently Asked Questions

What does PFAS program management actually include beyond treatment equipment?

It covers the entire organizational apparatus surrounding treatment: source inventory and occurrence monitoring,
technology screening and pilot testing, capital sequencing and rate modeling, procurement structure, residuals
management, regulatory reporting, operator training, and community communication. Treatment hardware is typically the
most visible element and rarely the element that determines whether a program succeeds. Programs fail far more often
from unfunded recurring costs, undocumented decision rationale, or unsustainable operator workload than from
equipment underperformance.

How long does it take to move from first detection to operating treatment?

For a medium-sized municipal system, three to five years is a realistic range from initial confirmed detection to
a commissioned permanent installation. Establishing an occurrence baseline consumes roughly a year, pilot testing
another six to twelve months, design and permitting six to eighteen months, and procurement plus construction twelve
to twenty-four months. Funding application cycles frequently add time rather than run in parallel. Interim measures
— leased skids, point-of-use treatment, or alternate supply — are commonly deployed to bridge this
interval when concentrations warrant faster action.

Should a small system treat, interconnect, or replace the source?

All three should be evaluated on lifecycle cost rather than capital cost alone. Source replacement is usually
cheapest where an uncontaminated aquifer is genuinely accessible, though hydrogeologic investigation is required to
confirm that it is. Interconnection often wins on twenty-year cost for systems under a few thousand connections
because it eliminates operator burden entirely, but it surrenders local control. On-site treatment remains
appropriate where neither alternative is feasible, and in that case a service-contract delivery model generally
outperforms owner-operated treatment for systems without certified full-time staff.

What are the largest recurring costs after a PFAS system is operating?

Media replacement is normally the dominant recurring expense, followed by compliance sampling and laboratory
analysis, then residuals transport and disposal. The relative proportions depend heavily on influent concentration
and background organic loading, which together determine changeout frequency. Utilities frequently underestimate
laboratory cost specifically, because PFAS analysis is substantially more expensive per sample than conventional
parameters and the sampling frequency required for both compliance and operational optimization exceeds what most
budgets initially anticipate.

How should a utility communicate PFAS results to its community?

Communicate early, communicate before the data is complete, and state clearly what is known and what is not.
Utilities that wait until they have a full solution before disclosing detections consistently face harder public
reception than those that share preliminary results alongside an explanation of the investigation underway. Provide
concentration values with context on the applicable standard, describe the specific next steps and their timeline,
and identify who to contact for questions. Avoid comparative framing that minimizes the finding; it reliably erodes
credibility when subsequent results are higher.

Does PFAS treatment create a new regulatory liability through residuals?

It can, and this is why residuals pathway confirmation belongs in the planning phase. Spent media, ion exchange
resin, and membrane concentrate all contain concentrated PFAS mass, and the regulatory classification of these
streams continues to evolve. Confirm in writing that the intended disposal or reactivation outlet will accept the
material, understand whether the facility performs verified destruction or simply relocates the mass, and retain
documentation of the chain of custody. A treatment decision that assumes an unconfirmed disposal pathway is an
incomplete decision.

Conclusion

The management of PFAS is no longer a question to be postponed; it is a pressing issue requiring immediate action from engineers, municipal directors, and plant operators. With effective practices grounded in rigorous science and community engagement, stakeholders can navigate the regulatory landscape, ensure compliance, and foster trust within their communities.

As the understanding of PFAS continues to evolve, stakeholders must remain adaptable, integrating newfound knowledge into their management practices. Investing in advanced treatment technologies and proactive monitoring will serve as the cornerstone of effective PFAS management strategies—ensuring clean water for today and for future generations.

By staying informed, engaged, and committed to best practices, we safeguard our environment and public health against the lingering threats of PFAS contamination.