Waterdrop Official ATP Tour Bottle
Lower concern product; no PFAS-prone materials identified.
Borosilicate glass and stainless steel are inherently lower PFAS-risk materials. Brand makes no PFAS claims; no public testing data available.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Borosilicate glass bottle with stainless steel cap
Lab data
No public lab test
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What Waterdrop Official ATP Tour Bottle is made of, ingredients and materials
This bottle is borosilicate glass, a thermally stable and chemically inert material that does not leach metals, BPA, or other endocrine disruptors into water over time. The stainless steel cap (typically 18/8 or 304 grade) resists corrosion and does not contribute heavy metals under normal use. Borosilicate glass is resistant to thermal shock and does not degrade or release microplastics when filled with hot or cold water, showing lower concern for common hazards associated with stored drinking water.
What’s concerning
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Borosilicate glass breakage and sharp fragments
While borosilicate is durable, it can shatter if dropped or subjected to direct impact, creating sharp glass shards. This is a mechanical hazard rather than a chemical one, but users should inspect the bottle periodically for stress cracks or chips before use.
Bacterial growth in stainless steel seams
If the cap seal deteriorates or the bottle is not dried thoroughly after washing, bacteria may colonize in the gap between the glass neck and steel cap. Regular hand-washing and air-drying (or wiping dry) mitigates this risk.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Stainless steel cap corrosion and leaching
Stainless steel caps on water bottles are extremely resistant to corrosion under normal use. No documented cases of nickel, chromium, or iron leaching from 18/8 stainless steel caps into drinking water at room temperature or with standard maintenance.
Thermal shock cracking of glass
Borosilicate glass is engineered to resist thermal shock better than standard glass, but extreme temperature differentials (e.g., direct heat source followed by ice water) could cause stress fractures over time. Normal use (room temperature to warm beverages) poses no known risk.
No water filtration function
This is a storage bottle, not a filter. If users expect it to purify water, they may be misled by the brand name. It stores water without the thermal degradation concerns of some materials, but does not remove bacteria, chlorine, heavy metals, or other contaminants unless used with a separate Waterdrop filter cartridge.
How is this PFAS grade calculated?
The brand's record and disclosure
Waterdrop has not made public statements about PFAS use in manufacturing or materials, nor is the company widely documented in major safety databases or recall histories. The brand is known primarily for water filtration products and marketed as a lifestyle brand focused on hydration. No major product safety controversies, recalls, or third-party certifications (such as NSF or FDA approval) are publicly available for this specific bottle model. The lack of transparency about manufacturing practices is typical of mid-tier consumer brands but limits independent verification of supply-chain safety.
How it compares in its category
Borosilicate glass bottles show lower concern for hazards common to plastics (BPA leaching, microplastics) and uncoated metals (aluminum or copper leaching). This product competes directly with brands like Hydro Flask and S'well, which use similar materials. The ATP Tour branding suggests this is a lifestyle product rather than a technical filter; the bottle itself does not filter water but may be intended to pair with Waterdrop's filter cartridges. Glass containers carry a breakage risk not present in plastic alternatives, which some users find limiting.
If you buy it
Handle carefully to avoid breaks; borosilicate is strong but not unbreakable. Avoid sudden temperature extremes (e.g., filling with boiling water then placing in a freezer), though the material tolerates normal hot and cold use well. Wash by hand or in the top rack of a dishwasher; do not expose the stainless steel cap to prolonged moisture in poorly ventilated spaces, as this can eventually cause minor corrosion at seams. The bottle itself has no consumable filter or replacement parts and should last indefinitely with normal care.
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
- Waterdrop has made a specific claim
Formulations change between production runs, so check the current label. How we grade.
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- Bacterial growth and biofilm if filters not replaced
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- Borosilicate glass pitcher, replaceable activated-carbon filter cartridge
- Bacterial growth in filter cartridge if unmaintained
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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.