S'well · Portable Water Bottles
S'well Water Bottle 17oz Pink Topaz
Low risk. Lower PFAS concern without brand material disclosure.
S'well's stainless steel construction with vacuum insulation is inherently lower risk for PFAS. No public disclosure of manufacturing details or PFAS testing limits full confidence.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Stainless steel double wall with vacuum insulation
Lab data
No public lab test
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What S'well Water Bottle 17oz Pink Topaz is made of, ingredients and materials
S'well's 17oz bottle uses 18/8 food-grade stainless steel (18% chromium, 8% nickel) in a double-wall vacuum-insulated design with a plastic cap. Stainless steel is chemically stable across normal temperature ranges and does not leach metals into water under typical use. The vacuum insulation contains no refrigerant or propellant, eliminating off-gassing risk. The plastic cap is the only potential weak point for chemical leaching.
What’s concerning
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
No PFAS disclosure
No public statement from the brand about PFAS in this product.
BPA & bisphenols
The bottle cap is made of plastic, and S'well does not publicly specify the resin type or whether BPA/BPS alternatives are used. Risk is low if cap does not contact hot liquids frequently, but prolonged dishwasher exposure or hot beverage storage could increase leaching potential.
Source, FDA ↗What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Nickel leaching from stainless steel
18/8 stainless steel is stable in neutral to slightly acidic water under normal conditions. No documented cases of nickel leaching from S'well bottles have been reported. Risk is minimal unless the bottle is regularly filled with highly acidic beverages (pH below 3.5).
Bacterial growth in insulation chamber
The sealed vacuum space is not accessible for cleaning and cannot harbor bacteria since it contains no air or moisture. This design eliminates a common risk in some insulated bottles with exposed internal cavities.
Coating or adhesive off-gassing
S'well bottles use no internal epoxy lining or adhesive-applied coating; the stainless steel is bare metal. No chemical off-gassing or VOC emissions have been documented for this product class.
Paint or printed label toxicity
The exterior coloring (Pink Topaz) appears to be a powder-coat or anodized finish on the steel; no peeling paint hazard has been reported for S'well bottles. Print on labels is minimal risk if not ingested.
How is this PFAS grade calculated?
The brand's record and disclosure
S'well does not publicly disclose detailed material sourcing, manufacturing standards, or third-party testing results on their website. The company has not published statements on PFAS use in coatings, linings, or components. No major recalls or safety controversies involving S'well bottles have been reported in public databases. The brand markets durability and sustainability but provides minimal transparency on chemical composition or hazard mitigation.
How it compares in its category
Metal water bottles (stainless steel) show lower concern among reusable beverage containers because the material itself is not a source typically linked to leaching. Compared to plastic bottles, S'well eliminates BPA and phthalate exposure. Compared to ceramic or coated aluminum bottles, stainless steel avoids concerns about glaze contaminants or protective coatings degrading. Price is higher than plastic alternatives but typical for premium metal bottles.
If you buy it
Hand-wash the bottle and cap with mild soap to prevent plastic cap degradation from dishwasher heat. Avoid prolonged contact with acidic beverages (lemon water, vinegar) which may slowly corrode stainless steel over years. Inspect the cap periodically for cracking or discoloration; replace if visible wear develops. The stainless steel body does not require replacement under normal use and poses no expiration risk.
What is not known about PFAS in this product?
- Basis
- Model estimate, 72% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- S'well has made a specific claim
Formulations change between production runs, so check the current label. How we grade.
What are the PFAS-free alternatives to S'well Water Bottle 17oz Pink Topaz?
- 18/8 stainless steel, no interior coating
- The brand calls it PFAS-free, which we have not verified
- Cap or closure contamination
2 hazards checked on this product, all on its full breakdown.
- stainless steel body, foam insulation, stainless steel cap
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- Bacterial or mold growth in storage
3 hazards checked on this product, all on its full breakdown.
More portable 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.