AquaFlex 4-Stage Water Filtration System | Discontinued Legacy Model

The AquaFlex system was designed
to provide multiple layers of
filtration through four
complementary treatment stages.

• Four-stage filtration:
  Combines sediment filtration,
  granular activated carbon,
  nano-adsorptive media,
  and carbon block filtration.
• Sediment reduction:
  Helps capture suspended particles
  such as dirt, rust, sand, and silt.
• Chlorine reduction:
  Activated carbon stages help
  reduce chlorine and associated
  taste and odor.
• Specialized contaminant treatment:
  The nano-adsorptive stage was
  designed to address selected
  contaminants including PFAS,
  fluoride, certain heavy metals,
  and pesticides.
• Improved water aesthetics:
  Carbon filtration helps improve
  taste and odor.
• Mineral retention:
  The system does not use reverse
  osmosis to broadly remove
  dissolved minerals.
• Layered filtration:
  Each stage performs a different
  function within the overall
  treatment process.

The first stage of the AquaFlex
system uses a sediment filter
to capture suspended particulate
matter from incoming water.

Helps Capture:

• Sand and silt
• Rust particles
• Dirt and sediment
• Other suspended particulates

By reducing particulate matter
before water reaches the remaining
filtration stages, the sediment
filter helps protect downstream
cartridges from unnecessary
particle accumulation.

Sediment filter replacement
requirements depend on incoming
water quality, sediment levels,
and household water consumption.

The second stage uses
granular activated carbon (GAC)
to help reduce chlorine,
improve taste and odor,
and adsorb certain
organic compounds.

Activated carbon has a highly
porous structure that provides
extensive internal surface
area for adsorption.

Primary Functions:

• Chlorine reduction
• Improvement of chlorine-related taste and odor
• Adsorption of certain organic compounds
• Additional treatment before specialized filtration

This stage complements the
remaining filtration cartridges
by addressing selected
chemical and aesthetic
water quality concerns.

Actual reduction performance
depends on water chemistry,
contact time, flow rate,
and cartridge specifications.

The third stage of the AquaFlex
system uses specialized
nano-adsorptive filtration media.

This stage was designed to
provide additional treatment
for selected contaminants
beyond conventional sediment
and carbon filtration.

Intended Treatment Applications:

• Selected PFAS compounds
• Fluoride
• Lead and certain other heavy metals
• Selected pesticides and organic contaminants

Nano-adsorptive media use
specialized surface properties
to attract and retain certain
contaminants as water passes
through the cartridge.

Important:
Reduction performance varies
by contaminant and depends
on the specific filtration
media, water chemistry,
flow rate, and operating
conditions.

The presence of nano-adsorptive
media does not establish a
verified reduction percentage
for every contaminant listed.

Existing AquaFlex owners should
confirm the specifications
of their installed cartridge
before relying on the system
for a particular contaminant.

The fourth and final stage
uses carbon block filtration
to provide additional
water treatment before
water exits the system.

Carbon block cartridges combine
activated carbon adsorption
with a compressed filtration
structure.

Primary Functions:

• Additional chlorine reduction
• Improvement of taste and odor
• Adsorption of certain organic compounds
• Additional particulate filtration

This final stage complements
the preceding cartridges
and helps maintain the
aesthetic quality
of treated water.

AquaFlex uses a layered
filtration approach in which
each stage addresses different
water quality concerns.

1. Sediment Filter:
   Captures suspended particles
   and helps protect downstream
   filtration components.
2. Granular Activated Carbon:
   Reduces chlorine and certain
   organic compounds while
   improving taste and odor.
3. Nano-Adsorptive Media:
   Provides specialized treatment
   for selected contaminants,
   depending on the specific
   media and water conditions.
4. Carbon Block:
   Provides additional activated
   carbon treatment and
   particulate filtration.

Together, these stages provide
complementary filtration functions
without relying on reverse osmosis.

AquaFlex was not designed to
remove every dissolved contaminant
or replace specialized treatment
for all water quality concerns.

Although the complete AquaFlex
system has been discontinued,
existing owners may still
need replacement cartridges
to maintain their equipment.

The original AquaFlex system
uses four filtration stages,
each with a different
treatment function.

Replacement cartridges should
be selected according to
the original system
configuration and
housing specifications.

Original Filtration Stages:

• Stage 1: Sediment filter
• Stage 2: Granular activated carbon
• Stage 3: Nano-adsorptive filtration media
• Stage 4: Carbon block

Available replacement products
can be explored through our
replacement filter category.

Please confirm compatibility
before ordering.
Not every replacement cartridge
is suitable for the original
AquaFlex system.

Browse Replacement Filters

If you’re unsure which cartridges
your system requires, send our
team a photo of your AquaFlex
setup or your original
purchase information.

Regular maintenance is important
for existing AquaFlex systems.

Because the system uses four
different filtration stages,
replacement requirements may
vary by cartridge.

Filter life depends on
several factors, including:

• Incoming water quality
• Household water consumption
• Sediment concentration
• Contaminant levels
• Cartridge capacity
• Operating flow rate

Existing owners should follow
the appropriate maintenance
schedule for their original
system configuration.

When changing cartridges,
follow the AquaFlex
filter replacement procedure
to ensure proper installation
and operation.

Download AquaFlex Filter Change Procedure

AquaFlex was originally
offered for residential
water filtration applications.

Municipal Water

For households using
treated municipal water,
the system’s filtration
stages were designed
to address chlorine,
sediment, and selected
additional contaminants.

Your local water utility’s
annual Consumer Confidence
Report can provide useful
information about source
water quality.

Private Well Water

Private well water can
vary significantly in
chemistry and contaminant
concentrations.

Depending on the water source,
additional treatment may be
necessary for concerns such as:

• Iron and manganese
• Elevated hardness
• Microbiological contamination
• High sediment levels
• Other naturally occurring contaminants

Existing AquaFlex owners
using private well water
should periodically evaluate
their water quality and
confirm that their treatment
configuration remains
appropriate.

AquaFlex should not be relied
upon as the sole treatment
for microbiologically unsafe
water without appropriate
verified treatment measures.

If you previously owned
an AquaFlex system and
are considering replacing
or upgrading your
water filtration equipment,
Greenfield Water Solutions
offers newer filtration
options.

Our current PureSync
filtration lineup provides
whole home and under sink
options for different
household water needs.

The best system depends
on your water source,
household size,
plumbing configuration,
and specific water
quality concerns.

Our team can help
you compare your
existing AquaFlex
configuration with
available filtration
options.

You can explore our
current product lineup
or contact us for
personalized guidance.

The AquaFlex 4-Stage
Water Filtration System
is a discontinued
Greenfield Water Solutions
legacy product.

This page is maintained
to provide existing
customers with useful
information about
their original system.

If you need assistance
identifying replacement
cartridges, understanding
your system configuration,
or exploring newer
filtration options,
our team is happy
to help.

For the most accurate
assistance, please
provide your original
order information
or a photo of your
filtration system.

Contact us through
website chat or call
208-462-0626.