Wide Mouth Water Bottle (32 oz)
32 oz wide mouth water bottle. Tritan plastic (BPA-free). Nalgene is one of the most popular water bottle brands.
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, chlorine, chloramine, lead, and microplastics. A quality water filter is the most impactful single purchase for reducing chemical exposure.
Why We Rated It This Way
Nalgene's Tritan plastic is BPA-free, but studies have found that Tritan leaches estrogenic chemicals. 'BPA-free' does not mean 'chemical-free.' Stainless steel or glass water bottles are the safest alternatives.
Chemical & Health Analysis
Each chemical of concern is broken down below — what it is, where it comes from in this product, what it does to the body, and who is most at risk.
estrogenic chemicals
Tritan plastic leaching estrogenic chemicals
Potential endocrine disruption
All health claims are based on published, peer-reviewed research from the NIH, WHO, IARC, and peer-reviewed journals. This information is for educational purposes and does not constitute medical advice.
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