Contigo · Insulated Drink Tumblers & Travel Mugs
Contigo Cortland Chill 2.0 Stainless Steel Water Bottle
Low-Medium risk. Bare stainless steel bottle with no known problematic coatings.
This stainless steel water bottle has no reported surface treatments or nonstick coatings. Bare stainless steel carries minimal PFAS risk.
We flunk more products than we pass. This one earned its grade. How we grade
Material
stainless steel, no reported coating
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What’s concerning
Category baseline
PFAS exposure happens more often with clothing products.
No PFAS disclosure
The company has not publicly discussed PFAS in this product.
Gasket and seal degradation
Rubber or silicone gaskets in the lid can degrade over time, especially with hot beverages or dishwasher exposure. Degradation may release small amounts of volatile organic compounds or compromise the seal, allowing bacterial colonization. Replacement gaskets are available but not always included.
Bacterial growth in inaccessible spaces
The double-wall vacuum design creates sealed air space that cannot be directly cleaned. If the seal fails or water enters during washing, trapped moisture can support mold or bacterial growth. Regular cleaning of the lid threads and gasket areas is the primary mitigation.
Thermal stress and seal failure
Repeated exposure to extreme temperature differences can compromise the vacuum seal or weaken the cap threads over time. A compromised seal reduces insulation performance and increases risk of stagnant water pooling, but does not release chemical hazards directly.
What’s reassuring
Uncoated safe material
Bare cast iron, stainless steel, carbon steel, or glass with no PFAS coating.
Nickel leaching from stainless steel
18/8 stainless steel leaches only trace amounts of nickel under normal drinking conditions. No documented cases of nickel poisoning from Contigo bottles. Individuals with severe nickel allergies should monitor skin contact at the lip; internal leaching is not a practical concern.
Lead
This model has no ceramic glaze, enamel, or paint coating on the drinking surface. External printed graphics (if present) are not in contact with beverages. No recalls or testing indicating toxic metal contamination in graphics.
Source: ATSDR ↗The full breakdown
What it's made of and why it matters
The Cortland Chill 2.0 uses 18/8 food-grade stainless steel as its primary material, which is a chromium-nickel alloy resistant to corrosion and oxidation. Stainless steel does not leach harmful chemicals under normal use conditions because the chromium oxide surface layer forms a protective barrier. Unlike coated or painted drinkware, this bare metal design eliminates risks from degrading ceramic glazes, polymer coatings, or epoxy linings that can shed particles or chemical residues over time.
The brand's record and disclosure
Contigo does not publish detailed safety disclosures or third-party certifications on chemical composition for this product line. The company has no documented history of major recalls or contamination issues affecting insulated bottles. The brand operates under standard FDA food-contact compliance for materials but does not volunteer additional testing data or sustainability certifications beyond what regulations require.
How it compares in its category
Insulated tumblers typically use stainless steel or plastic inner walls; plastic-lined alternatives carry leaching risk from BPA or other polymers, especially under heat or repeated washing. The Cortland Chill 2.0 avoids this by using solid steel construction. Competitor brands (Hydro Flask, YETI) use similar bare stainless steel designs, placing Contigo in a low-risk category for materials, though some premium brands provide more transparency on metal sourcing and manufacturing.
If you buy it
Hand wash or use a dishwasher safe cycle to preserve the double-wall vacuum seal and avoid thermal stress. Do not expose to extreme temperature swings (such as filling with boiling water then immediately freezing) as repeated stress can degrade seal integrity. Inspect the lid gasket annually for cracks or discoloration; replace if damaged to prevent leaks and bacterial growth in the gap. Stainless steel is durable but can develop microscopic scratches from abrasive scrubbing; use soft sponges to minimize surface damage.
What we don’t know
- Basis
- Model estimate, 82% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Contigo has made none
Formulations change between production runs, so check the current label. How we grade.
Safer alternatives in Insulated Drink Tumblers & Travel Mugs
Yeti
Rambler Tumbler YETI
18/8 stainless steel, no coating
Nickel leaching from stainless steel
Limited concern
Low risk. Bare stainless steel tumbler with no known PFAS risk.
⚠Risky category by default
More insulated drink tumblers & travel mugs 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.