Soma · Faucet Water Filters
Full Circle Soma Replacement Filter 2-Pack
Lower concern; standard carbon filtration without known PFAS indicators, but brand offers no transparency.
Soma's replacement filters use activated carbon and ion-exchange resin, established filtration media not typically linked to PFAS contamination. However, Soma makes no public disclosure about PFAS testing, manufacturing practices, or source material sourcing. Third-party lab testing of Soma filters would strengthen confidence.
Shop Soma on Amazon →Material
Activated carbon and ion-exchange resin filter media
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
Soma's replacement filters use activated carbon and ion-exchange resin, the industry standard for chlorine taste/odor removal and mineral reduction. Activated carbon is inert at room temperature and does not leach into filtered water under normal use. Ion-exchange resin beads soften water by swapping calcium and magnesium for sodium or potassium, a process that does not introduce new contaminants if the resin is food-grade (Soma does not publicly specify resin certification, but no adverse reports exist).
The brand's record and disclosure
Soma publishes minimal technical documentation on filter composition, material sourcing, or third-party testing beyond NSF/WQA claims. The brand does not disclose PFAS-specific testing or removal rates. No major product recalls or safety alerts have been issued for Soma filters in the US market. The company's transparency on manufacturing standards and resin supplier vetting remains opaque.
How it compares in its category
Faucet-mounted filters like Soma sit at the lower end of home water treatment in terms of contaminant coverage; they remove chlorine, some volatile organics, and sediment, but not lead, bacteria, or viruses without additional stages. Soma's price point and design are competitive with Brita and PUR models. Independent testing (e.g., by NSF) of competitor filters shows similar performance profiles, with no standout safety or contamination issues in the segment.
If you buy it
Replace filters every 2-3 months (or per usage indicators on the cartridge) to prevent bacterial biofilm growth inside the saturated carbon bed, a known risk in neglected filters. Store unopened replacements in a cool, dry place; do not freeze or expose to direct heat. Do not use for hot water above 60 degrees Celsius, as elevated temperature can accelerate resin degradation and increase leaching. Follow Soma's installation instructions to ensure seals are tight and no unfiltered water bypasses the cartridge.
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 contamination from biofilm accumulation
If filters are not replaced on schedule, saturated activated carbon becomes a breeding ground for bacteria and mold. This is a design inherent to all carbon filters, not specific to Soma, but negligent maintenance creates a potential health hazard.
Ion-exchange resin leaching or degradation
No published recalls or adverse event reports document leaching of resin beads or resin breakdown products into Soma-filtered water. Resin material and manufacturing origin are not disclosed, limiting independent verification of food-grade standards.
Filter housing material leachables
Soma filter housings are typically polypropylene or similar food-contact plastics. No documented BPA, phthalate, or other plastic migrant issues have been reported for Soma filters under normal cold-water use.
Incomplete contaminant removal claims
Faucet filters are not designed to remove bacteria, viruses, lead (initial cartridges only, not sustained), or nitrates; marketing may overstate effectiveness to consumers expecting whole-home performance.
Seal integrity and bypass risk
Improper installation or wear of the filter head gasket can allow unfiltered water to bypass the cartridge entirely, negating all filtration. User installation error is common and not a manufacturing defect, but increases risk if not carefully executed.
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 Faucet Water Filters
Aquasana
Under Sink Water Filter 2-Stage Filtration Reduces up to 99.99% of Pfas
Activated carbon, ion exchange resin cartridges
Lower-concern filter type, but claim lacks third-party lab proof, verify independently before relying on it.
✓Brand claims PFAS-free (unverified)
Waterdrop
Sink Filter
activated carbon filter media, stainless steel housing
Lower-concern filter type, but brand makes no PFAS transparency claim, verify cartridge materials directly before purchase.
✓Bare metal or glass, no coating at all
Waterdrop
Filtered Water Faucet
stainless steel faucet body; activated carbon/ion-exchange filter cartridge
Lower-concern choice; water filter design avoids high-risk PFAS applications, but brand transparency on materials could be stronger.
✓Bare metal or glass, no coating at all
More faucet water 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.