Clearly Filtered · Filtered Water Bottles
20oz Silicone Bottle with Straw and Adaptor
Lower concern product, but brand makes no PFAS commitment, verify with Clearly Filtered if concerned.
Silicone is a lower-risk material for PFAS compared to Teflon-family coating or treated coatings. However, Clearly Filtered does not publicly disclose PFAS testing or make PFAS-free claims for this bottle.
Shop Clearly Filtered on Amazon →Material
silicone bottle body with straw and adapter
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 bottle body is food-grade silicone, a polymer that does not contain BPA, BPS, or phthalates by chemical definition. Silicone is thermally stable and resistant to degradation under normal use, meaning it does not leach plasticizers when filled with cold or warm water. The straw and adapter are typically polypropylene or silicone as well. No metal components (like aluminum or stainless steel lids with epoxy liners) are involved, eliminating lead or cadmium coating risks.
The brand's record and disclosure
Clearly Filtered is known primarily for water filtration products and makes claims around reducing contaminants in drinking water. The brand does not publicly state a formal PFAS-free commitment or third-party certification for this bottle. No major recalls or safety controversies are on record for this product. The lack of explicit PFAS transparency is notable given that water bottles increasingly face scrutiny over PFAS in components like seals or coatings; if this is a key concern, direct contact with the manufacturer is advisable.
How it compares in its category
Silicone water bottles are considered safer than polycarbonate or polystyrene alternatives because they avoid BPA and phthalate leaching entirely. They rank similarly to stainless steel or glass in terms of chemical stability, though silicone lacks the temperature range of metal. Unlike plastic bottles, silicone does not degrade into microplastics during normal use. This product's straw inclusion is standard and poses no additional hazard if cleaned regularly to prevent bacterial biofilm.
If you buy it
Clean the straw and adapter thoroughly after each use and allow them to dry completely to prevent microbial growth in crevices. Avoid dishwasher cycles above 65°C (150°F) as repeated high heat can degrade silicone seals over time, though typical hand washing poses no risk. Replace the bottle if the silicone develops cracks, tears, or persistent odors that do not wash out. Store dry to prevent mold growth inside the straw.
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 straw and adapter
Straws and adapters are narrow passages where water residue can trap bacteria if not dried thoroughly between uses. This is a usage-dependent risk, not a material defect, and is common to all reusable straws.
Silicone leaching under heat stress
Food-grade silicone does not leach harmful chemicals under typical drinking water temperatures. Degradation or leaching has not been documented in peer-reviewed studies for this product's intended use.
Microplastics generation
Silicone does not fragment into microplastics during normal handling, filling, or storage. Unlike plastic bottles, there is no established mechanism for microplastic release from silicone.
Heavy metals in silicone pigments
Food-grade silicone typically does not contain cadmium or lead pigments. No recalls or contamination reports exist for Clearly Filtered silicone bottles on this basis.
Mold or mildew growth on material surface
Silicone can retain moisture in texture grooves or seals if not fully dried. This is a maintenance issue, not a material toxicity risk, and is managed by air-drying after each wash.
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 Filtered Water Bottles
LifeStraw
Go 2.0 Water Filter Bottle
Borosilicate glass bottle, coconut-shell activated carbon filter
Lower PFAS concern; LifeStraw's core materials are inherently lower-risk, but silence on coatings/seals leaves modest uncertainty.
✓Bare metal or glass, no coating at all
Brita
Premium Water Bottle
Stainless steel bottle with activated carbon filter
Lower-concern choice; stainless steel + carbon filters are traditional PFAS-safe materials, but Brita offers no public PFAS transparency.
✓Bare metal or glass, no coating at all
Brita
20 oz Carbon Stainless Steel Filtered Water Bottle
Stainless steel bottle with activated carbon filter cartridge
Lower-concern choice; stainless steel bottle and carbon media are inherently PFAS-low, but Brita makes no public PFAS commitment.
✓Bare metal or glass, no coating at all
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.