Is Solo PFAS-free?
Across 8 graded products, Solo averages F (31/100). On disclosure, the brand says nothing publicly about PFAS. 1 of its products grade C or better. Grades are model-based estimates, not lab results.
Worth buying from Solo C or better, safest first
Solo
Cup Company Grips Plastic Cups SQ1830
polystyrene plastic (PS) with grip coating
Lower concern for PFAS, but Solo does not disclose coating composition.
⚠Risky category by default
Graded and flagged D and F, we’d swap these
Solo
To Go Strawless Cups with Lids
Polystyrene (PS) cup with proprietary water/grease-resistant coating on interior surface
Skip, Solo hasn't disclosed coating chemistry; grease-resistant food packaging commonly contains PFAS.
⚠Waterproof or stain-proof treatment
Solo
Bistro Design Hot Drink Cups Paper
paperboard with unspecified water/grease-resistant coating
Skip until Solo discloses coating chemistry; paper cups routinely contain PFAS-based water barriers.
⚠Waterproof or stain-proof treatment
Solo
Dart Container Corporation Solo Cup Polycoated Hot Paper Cups
paper with polycoated (plastic/wax) water barrier
Skip, Solo's polycoated cups likely contain PFAS-based grease-resistant treatment, unconfirmed by brand.
⚠Waterproof or stain-proof treatment
Solo
Hot Paper Cups
Paper with grease-resistant/waterproof coating (unspecified)
Skip if concerned about PFAS in food-contact coatings; low transparency raises caution flags.
⚠Waterproof or stain-proof treatment
Solo
Bistro Hot/Cold Foam Cups with Lids
Expanded polystyrene foam with unspecified water/grease-resistant coating
Skip, foam cups commonly use PFAS-based water barriers; Solo does not disclose coating chemistry.
⚠Waterproof or stain-proof treatment
Solo
Target Solo Red Disposable Cups
Coated paper/paperboard with grease-resistant barrier
Skip if PFAS-concerned; Solo's grease-barrier coating composition remains undisclosed.
⚠Waterproof or stain-proof treatment
Solo
Thermoguard Insulated Paper Hot Cups
Paper with fluorochemical-based water/grease-resistant coating
Likely PFAS-coated food contact paper, skip if concerned; choose uncoated or manufacturer-certified alternatives.
⚠Waterproof or stain-proof treatment
Every grade uses the same public rubric. How grades work →