Clearly Filtered · Filtered Water Bottles
Clearly Filtered Water Bottle Removes 220+ Contaminants Double Wall Insulated Stainless Steel
Lower PFAS concern for the bottle itself; filter media composition remains opaque.
The double-wall stainless steel vessel presents lower inherent PFAS risk, but the brand provides no detail on filter cartridge materials or construction, a critical gap for a water filter product. Without disclosure of activated carbon source, binder chemistry, or third-party testing, the filter's contamination risk cannot be assessed.
Shop Clearly Filtered on Amazon →Material
Stainless steel double-wall insulation; filter media unspecified
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 bottle itself is double-wall stainless steel (304 or 316 grade typical for this category), which does not leach metals into water under normal use and is chemically inert. The critical unknown is the filter cartridge composition: Clearly Filtered does not publicly disclose whether filters contain activated carbon, ion-exchange resin, or other media, nor their manufacturing or cleaning standards. Without this information, you cannot assess whether filter housings or media shed particles, harbor bacteria between uses, or contain binders/adhesives that might leach.
The brand's record and disclosure
Clearly Filtered has not published third-party certifications (NSF, WQA) for this product on the brand website or marketing materials reviewed. The company markets a '220+ contaminants removed' claim but provides no testing summary, methodology, or independent verification of removal rates. No major recalls or safety controversies are on record for this bottle, but the brand's silence on filter media composition and cartridge replacement intervals suggests limited commitment to consumer transparency.
How it compares in its category
Insulated filtered bottles (e.g., Brita, LifeStraw, Hydro Flask filtered models) often disclose filter material and NSF certifications; Clearly Filtered does not follow this standard. Most competitors publish cartridge lifespan and replacement cost; Clearly Filtered's website lacks this detail. The stainless steel construction is equivalent to premium alternatives, but the opacity around filter safety puts it below category leaders in consumer confidence.
If you buy it
Replace cartridges on the manufacturer's recommended schedule (not specified publicly, so contact support). Do not assume the 'insulated' feature allows safe hot-water filtration; most cartridge media is rated for cold water only. Hand-wash the bottle between refills and dry the interior thoroughly to prevent bacterial biofilm growth in the insulation cavity or filter housing. If you notice taste, odor, or cloudiness, replace the cartridge immediately rather than waiting.
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.”
Filter media composition and leachables
Clearly Filtered does not disclose filter cartridge material, binders, or adhesives. Activated carbon and resin can shed fines or release manufacturing residues (e.g., formaldehyde, phenolic resins) if not properly rinsed; without transparency, consumer risk assessment is not possible.
Bacterial growth in filter housing and insulation cavity
Double-wall insulation creates a sealed air space that can harbor moisture and mold if the bottle is not dried thoroughly after each refill. Filter housings with stagnant water between uses are known sites for biofilm and Legionella-like pathogen colonization if left unmaintained for weeks.
Stainless steel corrosion or nickel leaching
Food-grade stainless steel (304/316) is highly resistant to corrosion in freshwater. No recalls or complaints of metal leaching from this bottle are on record. Risk is minimal unless the steel grade is misrepresented or the bottle is used with highly acidic liquids for extended periods.
Cartridge replacement cost and environmental waste
Clearly Filtered does not publish cartridge lifespan (gallons filtered) or cost online, making it difficult to assess long-term affordability and plastic waste. Proprietary cartridges that require frequent replacement increase consumer lock-in and landfill impact.
Contaminant removal claim validation
The '220+ contaminants removed' claim lacks published third-party testing (NSF, WQA, or EPA methodology). Without independent verification, removal efficiency for specific contaminants (lead, PFOA, bacteria, viruses) is not independently verified and should not be relied upon as a substitute for municipal water testing or certified filtration.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 62% 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.