Soma · Filtered Water Bottles
V2 Soma Bottle
Lower PFAS concern, stainless/carbon construction, but no transparency on filter composition or PFAS testing.
Soma's V2 bottle uses stainless steel and carbon filtration, materials with lower inherent PFAS risk. However, the brand provides no public disclosure about PFAS testing, filter supplier details, or treatment processes. The activated charcoal filter's source and manufacturing standards remain undisclosed, creating modest uncertainty.
Shop Soma on Amazon →Material
Stainless steel bottle with carbon/charcoal filter cartridge
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.
Uncoated safe material
Bare, uncoated material (cast iron, stainless, carbon steel, or glass) with no surface treatment to contain PFAS.
The full breakdown
What it's made of and why it matters
The V2 Soma Bottle uses food-grade stainless steel (typically 18/8) for the bottle body, which is chemically inert and does not leach metals into water under normal conditions. The filter cartridge contains activated carbon and possibly ion-exchange resin to remove chlorine, taste, and some contaminants. Stainless steel avoids the aluminum leaching risk present in some metal bottles and the BPA/BPS concerns associated with plastic bottles.
The brand's record and disclosure
Soma has not publicly released third-party testing data or certifications (such as NSF, WQA) for the V2 filter's contaminant removal claims. The brand maintains limited transparency about filter composition, material sourcing, or PFAS testing on the cartridge itself. No significant safety recalls or formal complaints have been established in public records for this model. The company markets sustainability but does not provide detailed safety documentation.
How it compares in its category
Stainless steel water bottles with carbon filters are among the safer reusable options compared to plastic bottles (which may leach BPA analogs) or uncoated aluminum bottles. Most competitors in this price range also lack third-party certification; those with NSF or WQA marks offer more independent verification. The V2's main advantage is material durability and corrosion resistance; the main weakness is opacity around filter testing and cartridge supply sourcing.
If you buy it
Replace filter cartridges on the manufacturer's recommended schedule (typically every 2-3 months) to prevent bacterial colonization and reduced performance. Rinse and dry the bottle thoroughly after each use to prevent mineral buildup or mold in seams. Do not expose to extreme heat (avoid dishwashers unless stated compatible, no boiling water). Store filters in a cool, dry place and discard unused cartridges if stored longer than 6 months, as activated carbon can absorb odors and microbes.
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
Carbon filters can support bacterial biofilm if not replaced regularly or if the bottle sits wet for extended periods. Soma does not publish sanitization protocols or post-filtration water quality testing, so risk depends entirely on user compliance.
Filter cartridge material composition and leachables (unverified)
The resin or binder materials in the filter are not publicly disclosed. While activated carbon itself is food-safe, any synthetic binders or adhesives in the cartridge are not documented, making independent assessment of leaching risk impossible.
Stainless steel corrosion or contamination from seals/gaskets
No recalls or complaints on record. However, silicone or rubber seals in filter housings can degrade over time; degradation is normally cosmetic but theoretically could introduce microparticles or off-gassing if seals are low-grade.
Counterfeit or substandard replacement cartridges
Soma cartridges sold through third-party marketplaces may be counterfeit or expired stock. Sourcing filters directly from the brand reduces this risk but increases cost and friction.
Microplastics or particulates from worn filter media
Carbon filters themselves do not typically shed microplastics, but degraded filter media or poorly sealed cartridges could theoretically pass fine particles. No testing data is publicly available for the V2 model.
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.
More filtered water bottles 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.