Wide Mouth Stainless Steel Water Bottle 32 oz
32 oz wide mouth stainless steel water bottle. 18/8 stainless steel. No BPA, no BPS, no phthalates, no PFAS. Vacuum insulated.
How scores are calculated
Materials (40%): How plastic-free the product is — raw materials, construction, and coatings.
Packaging (20%): Is the product packaged in plastic? Is it recyclable?
Transparency (20%): Does the brand disclose ingredients, sourcing, and manufacturing?
Durability (20%): How long does it last? Longer-lasting products reduce plastic waste over time.
This is a rating of this specific product only — not the company. Other products from this brand may score differently.
Last updated: April 6, 2026
Tap water in the US contains PFAS (detected in 45% of tap water samples per USGS 2023), chlorine, chloramine, lead, and microplastics. Bottled water is not safer — it contains microplastics from the plastic bottle and often fails to meet tap water quality standards. A quality water filter is the most impactful single purchase for reducing chemical exposure.
Why We Rated It This Way
Hydro Flask's stainless steel water bottle is completely inert — no chemical leaching, no microplastics. One bottle replaces thousands of single-use plastic bottles over its lifetime. The most popular stainless steel water bottle brand in the US.
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