waterdrop Edition Glass Bottle
Glass bottle, lower PFAS concern. No coating disclosed.
Borosilicate glass with no reported surface treatment doesn't contain PFAS. Brand provides no PFAS statement.
We flunk more products than we pass. This one earned its grade. How we grade
Material
borosilicate glass, no stated coating
Lab data
No public lab test
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What waterdrop Edition Glass Bottle is made of, ingredients and materials
This bottle is borosilicate glass, a hard, chemically inert silicate compound designed to resist thermal shock and chemical corrosion. Borosilicate contains no lead, cadmium, or reactive polymers that typically leach into water. The lack of any disclosed coating (enamel, ceramic, or polymer lining) means no adhesion layer that could degrade or contaminate contents over time. Glass itself does not off-gas or release volatile organic compounds.
What’s concerning
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Thermal shock and breakage
Borosilicate resists thermal stress better than standard glass, but rapid temperature changes (e.g., hot liquid into cold bottle) can still cause cracking or shattering. Users should allow gradual temperature equilibration.
Lid or closure material leachables
The bottle's glass body is not a material linked to PFAS concerns, but lid, gasket, or cap composition is not disclosed in available product information. These components may contain polymers (silicone, polypropylene) or other materials with potential to leach contaminants. Confirmation of lid material would strengthen confidence.
What’s reassuring
Bare uncoated material
Recorded as a bare, uncoated material with no surface coating or treatment.
Bacterial growth or stagnation
Glass itself does not harbor bacteria; however, if bottle cap or seal materials are not disclosed or are compromised, standing water over time poses general microbiological risk common to any reusable bottle. Regular cleaning mitigates this.
Lead
Borosilicate glass manufactured to standard specifications contains no added lead or cadmium. No recalls or reported contamination for this product class exist; however, independent third-party testing of this specific brand's glass has not been publicly disclosed.
Source, ATSDR ↗Coating degradation (none present)
Uncoated borosilicate eliminates the primary failure mode of enamel or ceramic-lined water bottles. This is a material advantage; no degradation pathway applies.
How is this PFAS grade calculated?
The brand's record and disclosure
Waterdrop is known for filtered water bottle products but maintains minimal public transparency on material sourcing, third-party testing, or chemical compliance certifications. No recalls or reported safety incidents tied to the Edition Glass Bottle are on public record. The brand does not explicitly address PFAS or other persistent contaminant concerns in marketing or product documentation, reflecting a common gap in water bottle disclosure standards.
How it compares in its category
Glass water bottles carry inherently lower contamination risk than plastic alternatives (BPA, phthalates) or coated metals (Teflon-type coating, epoxy resins). Borosilicate is more durable and chemically stable than soda-lime glass under repeated temperature cycling. Among filtered water bottles, this model avoids polymer housing leachables by eliminating a filtration housing; it functions as a passive storage vessel rather than an active filter system.
If you buy it
Borosilicate glass can withstand hot and cold liquids, though rapid temperature extremes may cause cracking. Inspect the bottle periodically for chips or cracks, as damaged glass poses ingestion and cutting hazard. Use soft cloths and mild soap for cleaning; avoid abrasive scrubbing that stresses the glass-lid seal. If a replacement filter or cap is needed, verify material composition before purchasing, as aftermarket parts may introduce polymers or coatings not present in the original bottle.
What is not known about PFAS in this product?
- Basis
- Model estimate, 82% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Waterdrop has made a specific claim
Formulations change between production runs, so check the current label. How we grade.
More 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.