Aquasana · Countertop Filters
Aquasana Clean Water Machine AQ-CWM-P-B
Lower concern for PFAS, but brand transparency on filter media is limited, verify cartridge source before purchase.
Aquasana's countertop filter uses activated carbon and standard polypropylene housing, materials not typically associated with intentional PFAS use. However, Aquasana does not publicly disclose whether replacement cartridges or filter media contain PFAS or Teflon-family coating.
Shop Aquasana on Amazon →Material
activated carbon filter cartridge, polypropylene housing
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
No PFAS disclosure
No public statement about PFAS in this product.
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
The full breakdown
What it's made of and why it matters
The AQ-CWM-P-B uses a activated carbon filter cartridge (likely coconut-shell or coal-based carbon) housed in polypropylene (PP) plastic. Activated carbon is a passive physical adsorbent with no known leaching hazards under normal cold-water conditions. Polypropylene is a thermoplastic that does not typically leach endocrine disruptors like BPA at room temperature, though it can degrade if exposed to sustained heat or UV light. The sealed cartridge design limits direct contact between water and housing materials, reducing leaching risk.
The brand's record and disclosure
Aquasana has not published detailed technical disclosures about activated carbon sourcing, pre-treatment, or manufacturing contaminants in their filter media. The company holds NSF certification for some product lines, which provides third-party validation of filtration claims but does not independently certify material safety. No major product recalls or contamination incidents involving this model have been documented in public databases. Transparency on cartridge composition and supplier specifications remains limited.
How it compares in its category
Countertop filters typically fall into two tiers: activated carbon (Aquasana, Brita, PUR) and more complex multi-stage systems (some premium brands). Activated carbon is the simplest and most cost-effective; it does not introduce leaching hazards that reverse-osmosis or ion-exchange membranes might present if degraded. This model is mid-range in price and performance, with lower material complexity than undersink or pitcher models that use additional plastic reservoirs.
If you buy it
Replace cartridges every 3-6 months per manufacturer guidance to prevent bacterial biofilm growth inside the filter housing, which poses a microbial (not chemical) contamination risk. Store the unit away from direct sunlight and heat sources above 120F to prevent polypropylene embrittlement. Flush the first cartridge through the filter before drinking to clear residual carbon dust. Do not use with hot water; polypropylene is rated for cold water only and can warp or degrade with sustained heat exposure.
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 growth in filter cartridge if unmaintained
Activated carbon filters are a growth medium for bacteria and mold if cartridges are not replaced on schedule or the unit is stored in warm, humid conditions. This is a biological contaminant risk, not a chemical one, but can degrade water safety if maintenance is neglected.
Polypropylene housing leaching at high temperature
While polypropylene is BPA-free and does not leach at room temperature, exposure to hot water above 140F or sustained UV light can cause polymer degradation and potential release of oligomers or plasticizers. This model is rated for cold water only, so risk is low if used as intended.
Activated carbon contaminants from manufacturing
Food-grade activated carbon is widely used and has no established contamination issues in water filter cartridges. However, Aquasana's specific sourcing and pre-treatment protocols are not publicly disclosed, making independent verification of purity impossible.
Cartridge dust inhalation during installation
New activated carbon cartridges can release loose carbon particles (dust) when first installed or removed. This is a minor inhalation hazard if dust is breathed directly; flushing the cartridge through the filter before drinking water exposure eliminates this risk.
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.