Solo Review, Is Solo Non-Toxic?
Solo averages 48 out of 100 on PFAS Authority's PFAS and toxin screen across the 8 Solo products graded as of October 2026, and 4 of them reach its 70 point pass mark.
Solo grades Poor on our four-band scale. On disclosure, the brand says nothing publicly about PFAS. See what every brand has published about PFAS for how that compares.
PFAS Authority is a scoring system, not a laboratory. We do not test products ourselves. Grades are model-based, built from published ingredients, materials, certifications, brand disclosures and third-party lab results where they exist. See the rubric.
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Top-graded picks in the categories readers replace first, every one scored on the same rubric.
- polypropylene filter housing, carbon/sediment cartridge
- We found no PFAS statement from the brand
- Bacterial growth in spent cartridges
3 hazards checked on this product, all on its full breakdown.
Aquasure
Premier Series 75 GPD Under Sink Reverse Osmosis Water Filtration System
- RO membrane, carbon filters, stainless steel housing
- We found no PFAS statement from the brand
- Bacterial and microbial growth in housing and filters
4 hazards checked on this product, all on its full breakdown.
Avocado
Vegan Mattress
- organic cotton, natural latex, coconut coir, recycled steel coils
- The brand calls it PFAS-free, which we have not verified
- Heavy metals
2 hazards checked on this product, all on its full breakdown.
Does Solo have PFAS, by category
Which Solo products are PFAS-free? Good or better, best-graded first
- Sugarcane-based bagasse (fiber pulp)
- We found no PFAS statement from the brand
- Mold and microbial growth during storage. Bagasse fiber is hygroscopic and biodegradable; if stored in humid…
2 hazards checked on this product, all on its full breakdown.
- polystyrene plastic (PS) with grip coating
- We found no PFAS statement from the brand
- Polystyrene monomer and oligomer leaching. Polystyrene can leach small amounts of styrene monomers and…
4 hazards checked on this product, all on its full breakdown.
- Expanded polystyrene foam
- We found no PFAS statement from the brand
- Styrene monomer leaching. Polystyrene can release low levels of styrene when exposed to heat above 140°F…
3 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- Polystyrene (PS) cup
- We found no PFAS statement from the brand
- Styrene monomer leaching. Polystyrene is known to leach styrene monomer, a possible carcinogen (IARC Group…
4 hazards checked on this product, all on its full breakdown.
Find an alternative on AmazonWhich Solo products contain PFAS? Poor and Bad, we’d swap these
- paper with polycoated (plastic/wax) water barrier
- We found no PFAS statement from the brand
- PFAS. Polycoated food-service cups conventionally use fluorinated grease repellents; Dart has not ruled this…
4 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- molded fiber pulp, possible grease-resistant coating
- We found no PFAS statement from the brand
- Water and grease-resistant coating (composition undisclosed). Molded fiber hinged containers commonly use…
3 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- paperboard with unspecified water/grease-resistant coating
- We found no PFAS statement from the brand
- PFAS. Solo has not disclosed whether the water-resistant interior coating contains PFAS or fluorine-free…
4 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- Paper with grease-resistant/waterproof coating (unspecified)
- We found no PFAS statement from the brand
- PFAS. The unspecified interior coating may leach into hot beverages, particularly fatty or acidic drinks that…
2 hazards checked on this product, all on its full breakdown.
Find an alternative on AmazonWhat to buy instead Good or better, in the categories Solo sells
- Plant-based compostable PLA coating
- A third party reports verifying it as PFAS-free
- Leachables from undisclosed grease-resistant coating
3 hazards checked on this product, all on its full breakdown.
Solo and PFAS, common questions
- Does Solo have PFAS?
- Solo averages 48 out of 100 on PFAS Authority's PFAS and toxin screen across the 8 Solo products graded as of October 2026, and 4 of them reach its 70 point pass mark. Grades are model-based estimates built from published materials, ingredients and disclosures, not lab tests.
- Is Solo non-toxic?
- 6" Solo Bare Sugarcane Biodegradable Take Out Container Hinged Clamshell, Compostable, Ivory is the highest-graded Solo product we have scored, at 70/100. It depends on the product line rather than the brand, so check the grade of the exact item you are buying.
- Which Solo products are lower concern for PFAS?
- The highest-graded Solo products we have scored are 6" Solo Bare Sugarcane Biodegradable Take Out Container Hinged Clamshell, Compostable, Ivory, Solo Cup Company Grips Plastic Cups SQ1830, Solo Bistro Hot/Cold Foam Cups with Lids. That is our model-based estimate from materials and public disclosure, not a lab test.
- Which Solo products should I avoid?
- The lowest-graded Solo products we have scored are SOLO Hot Paper Cups, Solo Bistro Design Hot Drink Cups Paper, Dart Solo Hinged Food Take-Out Container. Each one links to the evidence behind its grade.
Every grade uses the same public rubric. How grades work →