Paragon Water · Countertop Filters
PW90 CT Countertop Touchless Office Water Purifier
Water filter using activated carbon and RO; lower concern for PFAS.
Paragon Water PW90 uses standard carbon and reverse osmosis filtration, materials typically free of intentional PFAS. No brand disclosure on PFAS; no third-party testing found.
Shop Paragon Water on Amazon →Material
Activated carbon and RO membrane filtration media
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
No PFAS disclosure
No public statement about PFAS in this product.
The full breakdown
What it's made of and why it matters
The PW90 CT uses activated carbon and reverse osmosis (RO) membrane as its primary filtration media. Activated carbon is an inert, porous material that traps contaminants through adsorption and poses no documented leaching risk to water. RO membranes are typically made from polyamide or cellulose acetate polymers that are chemically stable in aqueous environments and do not release harmful compounds into treated water at normal operating conditions. This combination is among the safest filtration approaches in the consumer water treatment category.
The brand's record and disclosure
Paragon Water has not published detailed material safety data sheets or third-party testing summaries for this model in readily available public sources. The brand maintains a silent stance on PFAS removal claims, which is notable given industry momentum toward explicit PFAS performance statements. No recalls, litigation, or documented safety incidents involving this specific model are on record. Limited transparency does not indicate a hazard but does mean independent verification of performance claims is advisable.
How it compares in its category
Countertop RO and carbon filters are generally among the lowest-risk water treatment products available, as filtration media themselves are not consumed. The PW90 CT's touchless (sensor-based) design avoids the hand-contact contamination risk of manual dispensers. Competitors using similar activated carbon and RO technology (such as Aqua Tru or Waterdrop brands) have comparable material safety profiles. The main differentiation is in pre-filter housings and housing materials, which can sometimes leach if constructed from certain plastics or poorly cured epoxy resins under stagnant conditions.
If you buy it
Replace or refresh the activated carbon cartridge every 6 to 12 months depending on water use and initial quality, as exhausted carbon loses adsorption capacity and can become a growth site for bacteria if water is allowed to sit. Store the unit in a cool location and avoid direct sunlight, which can degrade polymer housings over years. If the device is unused for more than 2 weeks, flush the system for 2-3 minutes before consuming water to reduce bacterial biofilm risk. Inspect the RO membrane housing for cracks or discoloration annually; any visible degradation warrants replacement.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
Bacterial biofilm growth in filter housing
Countertop RO systems with stagnant water exposure can develop bacterial colonies in membrane housings if cartridges are not replaced timely or the system sits unused for extended periods. This is a maintenance hazard, not a material hazard, and is manageable through regular flushing and cartridge replacement.
Housing material leachables (epoxy resin or plastic)
The PW90 CT's plastic or composite housing could potentially leach compounds such as BPA or uncrosslinked epoxy oligomers if exposed to warm water or stagnant conditions over years. Paragon Water has not published housing material specifications; avoidance of direct heat and regular use mitigates this risk.
RO membrane polymer degradation
Polyamide and cellulose acetate RO membranes are chemically stable under normal drinking water conditions and do not degrade into harmful compounds. No documented cases of membrane-related leaching in countertop units exist in the literature.
Activated carbon dust or particles in outlet water
New or recently replaced activated carbon cartridges may shed fine particles into the first few liters of water; this is cosmetic and not a toxicity concern, but flushing the system for 1-2 minutes before first use is standard practice.
Sensor or electronic component degradation
The touchless sensor design involves electronics not in direct contact with potable water. No established hazard from sensor electronics leaching into water is documented for this product category.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 72% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
Safer alternatives in Countertop Filters
ZeroWater
40-Cup Glass Water Filter Dispenser
borosilicate glass, plastic pitcher housing, ion-exchange resin cartridge
Lower concern on PFAS, but brand silence on cartridge composition is a missed transparency opportunity.
✓Bare metal or glass, no coating at all
ZeroWater
Culligan ZeroWater Technology 22-Cup Ready Water Filtration Dispenser
Plastic housing, activated carbon + ion-exchange resin filter media
Lower concern, but verify filter cartridge specs before relying on PFAS claims.
✓Brand claims PFAS-free (unverified)
LARQ
PureVis Pitcher
Borosilicate glass pitcher, activated carbon filter cartridge
Lower PFAS concern for the pitcher itself; verify filter cartridge sourcing if purchasing replacements.
✓Bare metal or glass, no coating at all
More countertop filters grades
How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.