Non-Toxic Swimwear, ranked by PFAS grade
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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.
188 of the 189 swimwear products PFAS Authority has graded score below its 70 point pass mark for PFAS and other toxins, 99.5% of the category, as of October 2026, leaving 1 that passes. The highest graded is Patagonia Women's Bottom Turn Racerback Bikini Top at 90 out of 100.
The full ranking is below, best-graded first, with every score linking to the evidence behind it.
Is swimwear safe?
1 of the 189 swimwear products we graded come back low-concern on our screen and 188 do not. Our grades are model-based assessments built from published materials, ingredient lists, certifications and brand disclosures, not laboratory tests, so they say what we can evidence rather than that anything is safe.
Best graded swimwear here
- 1Patagonia Women's Bottom Turn Racerback Bikini Top 90 out of 100
- 2Solid & Striped Taylor One Piece Seersucker Plaid 65 out of 100
- 3adidas Women's Mexicana Florals Tie-Back Swimsuit 65 out of 100
Start here
The best non-toxic swimwear, ranked by grade
Swimwear, ranked.
The quickest read, what to skip and the top-graded picks worth buying instead.
Seafolly
Women's Sea Dive Deep V-Neck One-Piece Swimsuit
Avoid unless Seafolly discloses water-repellent coating composition; PFAS risk unconfirmed.
Patagonia
Women's Bottom Turn Racerback Bikini Top
Brand PFAS statement on record, which we have not verified.
Why Patagonia Women's Bottom Turn Racerback Bikini wins, and what it beats
Every grade on this page is one sum. A category starts from a baseline, each disclosed material or coating adds risk points, and each thing the brand or a third party has published takes them away. Below is that sum for the winner, then for 3 products it beats, so you can see exactly where the 70 points between the top and the bottom of this swimwear ranking come from.
The winner
Made of Nylon/polyester blend with elastane (standard swimwear).
- +30Category baseline. The starting point for this type of product, before anything specific to this product is counted.
- -10Brand-stated PFAS-free. The brand states this product is PFAS-free. We have not verified the claim.
- -10Base material not linked to PFAS. The main material recorded for this product is not one associated with PFAS.
10risk points in total, which is a grade of 90
What the grade does not fix. Nothing specific to this product adds risk, so what remains is the category baseline that every product here starts from. See the full breakdown.
What it beats, and why
What puts it behind. No PFAS disclosure, +15 points. No public statement from the brand about PFAS in this product. The winner carries no such factor.
Made of Cotton/cotton-blend seersucker plaid.
- +30Category baseline
- +15No PFAS disclosure
- -10Base material not linked to PFAS
35risk points, a grade of 65
What puts it behind. Waterproof / stain-resistant treatment, +35 points. Water-repellent coating treatments have historically used PFAS. The winner carries no such factor.
Made of Nylon/polyamide with water-repellent coating (water-repellent coating) finish.
- +35Waterproof / stain-resistant treatment
- +30Category baseline
- -10Brand-stated PFAS-free
55risk points, a grade of 45
What puts it behind. Waterproof / stain-resistant treatment, +35 points. Water-repellent coating treatments have historically used PFAS. The winner carries no such factor.
Made of Nylon blend with water-repellent coating finish (likely fluorinated).
- +35Waterproof / stain-resistant treatment
- +30Category baseline
- +15No PFAS disclosure. No public statement from the brand about PFAS in this product.
80risk points, a grade of 20
No product on this page was physically tested by us. Every number above comes from published materials, ingredient and coating disclosures, certifications and brand statements, scored on one public rubric. Formulations change without notice, so check the current product listing before buying.
Which swimwear is PFAS-free? Good or Excellent, best-graded first
- Nylon/polyester blend with elastane (standard swimwear)
- The brand calls it PFAS-free, which we have not verified
- Elastane (spandex) degradation under heat or chlorine
Which swimwear contains PFAS? Poor and Bad, we’d swap these
- Cotton/cotton-blend seersucker plaid
- We found no PFAS statement from the brand
- Azo dyes and colorfast stability
2 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- Polyester/nylon swimsuit fabric, likely uncoated or standard finish
- Azo dyes and synthetic colorants
4 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- Nylon/polyester blend with elastane (spandex)
- We found no PFAS statement from the brand
- Elastane degradation and leaching
2 hazards checked on this product, all on its full breakdown.
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- Polyester/nylon woven athletic fabric
- Heavy metals
4 hazards checked on this product, all on its full breakdown.
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- Nylon/polyester blend swimsuit fabric with standard elastic
- Heavy metals
4 hazards checked on this product, all on its full breakdown.
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- Nylon/spandex blend (standard swimwear fabric)
- We found no PFAS statement from the brand
- Azo dyes in synthetic textiles
4 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- Nylon and spandex blend (no specialized water-resistant coating claimed)
- We found no PFAS statement from the brand
- Azo dyes and colorants
4 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- Nylon/polyester blend swimsuit fabric
- We found no PFAS statement from the brand
- Azo dyes and color fastness
4 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- nylon/polyester blend
- We found no PFAS statement from the brand
- Azo dyes and dye migration
4 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- Nylon/polyester blend (typical swimwear)
- We found no PFAS statement from the brand
- Azo dyes and colorfast stability
3 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- Nylon/spandex blend (standard swimwear)
- We found no PFAS statement from the brand
- Azo dyes and synthetic dyes
3 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- nylon/spandex blend (standard swimwear)
- We found no PFAS statement from the brand
- Heavy metals
2 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- nylon/spandex blend (typical swimwear)
- We found no PFAS statement from the brand
- Azo dyes in textile coloring
3 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- Nylon/polyester blend swimwear, no specified water-repellent coating
- We found no PFAS statement from the brand
- Antimony (polyester catalyst residue)
2 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- nylon/polyester blend (standard swimwear)
- We found no PFAS statement from the brand
- Azo dyes in synthetic textiles
3 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- nylon/polyamide blend with elastane
- We found no PFAS statement from the brand
- Azo dyes and synthetic colorants
3 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- nylon/polyamide blend with elastane
- We found no PFAS statement from the brand
- Azo dyes in nylon and elastane
3 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- Nylon blend (primary); no reported water/stain-resistant treatment specified
- We found no PFAS statement from the brand
- Heavy metals
3 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- Nylon/spandex blend swimsuit fabric
- We found no PFAS statement from the brand
- Azo dyes and synthetic colorants
4 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- Nylon blend (primary fiber); elastic/spandex blend construction
- We found no PFAS statement from the brand
- Azo dyes and color fastness
4 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- Nylon/spandex blend (elastane); shimmer likely from polyester or mica coating
- We found no PFAS statement from the brand
- Antimony in polyester (if present in shimmer coating)
2 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- Nylon/polyester blend swimsuit fabric (no water-resistant coating disclosed)
- We found no PFAS statement from the brand
- Azo dyes in synthetic textiles
3 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- Nylon/spandex blend swimwear (typical for swim apparel)
- We found no PFAS statement from the brand
- Formaldehyde / VOCs
3 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- Nylon/polyester blend swimsuit fabric, likely uncoated
- We found no PFAS statement from the brand
- Spandex/elastane degradation and leaching
2 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon- 65COS Bonded-Scuba V-Neck Swimsuit
- 65COS Women's Asymmetric Double-Faced Swimsuit
- 65COS Women's Bonded-Scuba V-Neck Bikini Top
- 65COS Women's Bonded-Scuba V-Neck Swimsuit in Red
- 65COS Women's Bonded Swimsuit in Brown
- 65COS Women's Contrast-Trim Swimsuit
- 65COS Scuba Swimsuit
- 65Gap Women's Bandeau Bikini Top
- 65Gap Women's Scoop Neck Swimsuit
- 65Hunza G Clara One-Shoulder Swimsuit
- 65Hunza G Coverage Square Neck Swimsuit
- 65J.Crew Lana Classic Sculpt One-piece
- 65J.Crew Women's Gail One-piece
- 65J.Crew Women's Long-Torso Gemma One-Piece
- 65J.Crew Women's Long-torso Nia ruched squareneck one-piece in gingham
- 65J.Crew Women's Squareneck One-piece
- 65J.Crew Women's Sydney Scrunchie One-Piece Swimsuit
- 65Lspace L*Space Effie Bikini Top Women's
- 65Lspace L*Space Nadia Blanket Stitch One Piece Swimsuit
- 65Lspace L*Space Women's Loren One-Piece Bitsy Swimsuit
- 65Lspace Women's Piper Keyhole One-Piece Swimsuit
- 65Mikoh Swim Mikoh Moorea White One Piece Swimsuit
- 65Mikoh Women's Las Palmas Classic Stripe One-Piece Swimsuit
- 65Mikoh Women's Parsa Rattan Stripe Bikini Top
- 65Nike Women's Effortless Essential Square Neck Tankini Top
- 65Nike Women's V-Neck Tankini Top
- 65Onia $175 Onia Black Michelle One Piece Swimsuit Small Ymy1223
- 65Onia DVF X Ginny One Piece Swimsuit - New Women
- 65Onia NWT! Banana Republic Palm Print Isabella Swimsuit - Size Medium - New Women
- 65Onia Size M Blue Shadow Ginny Block Mesh One-piece Swimsuit $245
- 65Onia Swim Onia Sky Blue One Piece Swimsuit Scoop Neck Open Back Nylon Xs New
- 65Quiksilver Men's Everyday Volley 15
- 65Reformation Campo Bikini Bottom
- 65Reformation Joy One Piece Swimsuit
- 65Reformation Posidonia One Piece Swimsuit
- 65Reformation Posidonia One Piece Swimsuit | Black | Medium
- 65Reformation Wailea One Piece Swimsuit | Black | XL
- 65Reformation Zahara Bikini Top
- 65Reiss Delta Mesh-Insert Halterneck Swimsuit
- 65Reiss Janina Polka- Dot Bandeau Bikini Top
- 65Reiss Lucia Floral-Print Halterneck Swimsuit
- 65Reiss Maya Plunge Halterneck Swimsuit
- 65Reiss Men's Geometric-Print Swim Shorts
- 65Reiss Women's Imogen Hardware-Strap Cut-Out Swimsuit
- 65Reiss Women's Luna Underwire Bandeau Cutout Swimsuit
- 65Solid & Striped Michelle Reversible One-Piece
- 65Solid & Striped The Iris Bikini Top
- 65Solid & Striped Women's Alma One-Piece Swimsuit
- 65Solid & Striped Women's Willow Reversible Halter One Piece Swimsuit
- 65Speedo Women's Eco Solid Adult Super Pro Swimsuit
- 65Summersalt Plus Size Sidestroke Swimsuit
- 65Summersalt Swim Summersalt The Sidestroke One Piece Swimsuit
- 65Summersalt Women's Sea Breeze Cutout One-Piece Swimsuit
- 65Summersalt Women's Swim Summersalt The Sidestroke One-Piece Blue & White Swimsuit
- 65Tommy Hilfiger Women's Allover Script Halter Swimsuit
- 65Tommy Hilfiger Women's Crossed-Back Seersucker Bikini Top
- 65Tommy Hilfiger Women's Hilfiger Logo Halter One-Piece Swimsuit
- 65Tommy Hilfiger Women's O-Ring Scoop Back One-Piece Swimsuit
- 65Tommy Hilfiger Women's Signature Stripe Plunge Halter Swimsuit
- 65Tommy Hilfiger Women's Stripe Bikini Top
- 65Vitamin A Classic Bandeau One Piece
- 65Vitamin A Jenna One-Piece Swimsuit
- 65Vitamin A Mila One-Piece Swimsuit
- 65Vitamin A Women's Rossi Halter Underwire Top
- 65Alo Yoga Body Wave Cutout One Shoulder One Piece Bodysuit in Ocean/Teal
- 65J.Crew Women's Long-Torso Lana One-Piece
- 65Summersalt Sidestroke
- 65Billabong Sol Groove Retro Surf One
- 65Gap Women's Cutout Wrap One-Piece Swimsuit
- 65 Bondi One-Piece Swimsuit
- 65Lspace L*Space Elise One Piece Swimsuit
- 65Lspace L*Space Swim L*Space Ribbed Baewatch One Piece Swimsuit
- 65 Dasha One Piece
- 65Mikoh Antibes One Piece
- 65Mikoh Women's Mila One-Piece Swimsuit
- 65Summersalt DreamDrape Sidestroke
- 65Summersalt Summersalt Surf
- 65Mikoh Malta One Piece
- 65Onia New Black One Piece Swimsuit - New Women
- 45Patagonia Women's Long Sleeved Swell Seeker One Piece Swimsuit
- 45Patagonia Women's Cross Shore One-Piece Swimsuit
- 45Patagonia Women's Sunny Tide One-Piece Swimsuit
- 20Hunza G Coverage Square Neck One-Piece
- 20Hunza G Brooke Swimsuit
- 20Nike Women's Shoreline Scoop Neck One Piece Swimsuit
- 20Rip Curl Women's Premium Surf Short Jane Swimsuit
- 20Seafolly Women's Cap Sleeve Zip Front One Piece
- 20Adidas Adizero BS Women's Swimsuit
- 20Adidas RIPSTREAM 3-STRIPES TIE BACK SWIMSUIT
- 20Adidas Swim adidas Adizero Freestyle Swimsuit Women's
- 20Alo Yoga Body Wave One Piece Swimsuit
- 20Andie Swim Women's Copacabana One Piece Swimsuit
- 20Andie Women's Fiji Lace-Up Back One-Piece Swimsuit
- 20Andie Women's The Amalfi One-Piece Swimsuit
- 20Andie Women's The Amalfi Swim Dress
- 20Andie Women's The Betina One-Piece Swimsuit
- 20Athleta Swim Athleta Aqualuxe Square Plunge One Piece Swimsuit
- 20Billabong Women's Sandy Shells Hailey One-Piece Swimsuit
- 20Billabong Women's Sol Searcher Sloane One-Piece Swimsuit
- 20Billabong Women's Stay Grounded Tanker One Piece Swimsuit
- 20Billabong Women's Sweet Escape Sloane One-Piece Swimsuit
- 20Billabong Women's Tanlines Bound Sloane Hawaii One-Piece Swimsuit
- 20COS Women's Bonded-Scuba V-Neck Swimsuit
- 20Gap Factory Babygap Swim Two-Piece
- 20Old Navy Women's Strapless Belted One-Piece Swimsuit
- 20Hunza G Sadie Swimsuit
- 20Hunza G Square Neck One Piece Swimsuit
- 20Hunza G Women's Faye One Piece Swimsuit
- 20J.Crew Women's Claudia One-piece Swimsuit
- 20Lands' End Women's DD-Cup Tummy Control Chlorine Resistant Soft Cup Tugless One Piece Swimsuit
- 20Lands' End Women's Tugless High Neck Portrait Back One Piece Swimsuit
- 20Lands' End Women's Tugless Long Sleeve Rash Guard One Piece Swimsuit
- 20Lands' End Women's Tugless Monokini Swim Dress Swimsuit
- 20Lands' End Women's Tugless Sporty DDD-Cup Chlorine Resistant One-Piece Swimsuit
- 20Lands' End Women's Lands' End DD-Cup New SlenderSuit Wrap One Piece Swimsuit
- 20Lspace L*Space Sunrise Shell Bikini Top
- 20Mikoh Java Bikini Top Women's
- 20Nike Women's Fastback One Piece Swimsuit
- 20Nike Women's Hydralock Luxe V-Neck One Piece Swimsuit
- 20Nike Women's V-Back One Piece Swimsuit
- 20Quiksilver 2/2 Prologue Bz Wetsuit
- 20Quiksilver Men's Geometric Swim Trunks
- 20Quiksilver Men's Mercury Gravity 21" Boardshorts
- 20Quiksilver Men's Prologue Long Sleeve Spring Suit
- 20Quiksilver Men's Swim Trunk
- 20Quiksilver Velocity Quiksilver x Pacifico Isa High Leg One Piece Swimsuit
- 20Reformation Women's Rio One-Piece Swimsuit
- 20Reiss Women's Nadine Halterneck Pleat-Detail Swimsuit
- 20Rip Curl Women's Bossa Nova One-Piece Swimsuit
- 20Rip Curl Women's Classic Surf One-Piece Swimsuit
- 20Seafolly Women's Active Deep V-Neck One-Piece Swimsuit
- 20Seafolly Women's Collective DD One-Piece Swimsuit
- 20Seafolly Women's Collective MF Gathered WrapFront One Piece Swimwear
- 20Seafolly Women's Collective Multi Fit Square Neck One Piece Swimsuit
- 20Seafolly Women's Long Sleeve Zip Front One-Piece Swimsuit
- 20Speedo Women's Aquablade Recordbreaker One-Piece Swimsuit
- 20Speedo Women's Endurance+ Medalist Swimsuit
- 20Speedo Women's Moderate Ultraback PowerFLEX One Piece Swimsuit
- 20Speedo Women's Quantum Fusion One Piece Swimsuit
- 20Speedo Women's Ultraback One Piece Swimsuit
- 20Summersalt Women's Swim Summersalt Sidestroke One Piece Swimsuit
- 20Tommy Hilfiger Women's One Piece Swimsuit
- 20Adidas Women's Originals U-back Swimsuit
- 20Andie Women's Snap Long Torso One-Piece Swimsuit
- 20Andie Women's Swim Andie The Amalfi One Piece Swimsuit
- 20Billabong Women's Sol Searcher 50 UPF Long Sleeve Rashguard
- 20Billabong Women's Billabong Paradise Sun Tully Strapless One-Piece Swimsuit
- 20Lands' End Women's DD-Cup Tummy Control Square Neck Underwire Tankini Swimsuit Top
- 20Lands' End Women's Tugless X-Back One Piece Swimsuit
- 20Nike Women's Water Texture Jacquard V-Neck One-Piece Swimsuit
- 20Onia Two-Tone Swimsuit
- 20Quiksilver Men's Everyday Sessions Back-Zip Short Sleeve Spring Suit
- 20Rip Curl Women's Rip Curl Classic Surf Swimsuit
- 20Seafolly Women's Cap Sleeve Zip-Front One Piece Swimsuit
- 20Solid & Striped Solid Striped Women's Veronica One-Piece Swimsuit
- 20Summersalt Women's Sidestroke One Piece Swimsuit
- 20Tommy Hilfiger Women's Striped One-Piece Swimsuit
- 20Athleta Womens Aqualuxe Plunge One Piece
- 20Hunza G Hunza G Katya
- 20Nike Women's Swim Ribbed Texture U-Back Low Leg One Piece
- 20Onia Rachel Watercolor Stripe Scoop Back Swimsuit
- 20Reformation Wailea One Piece Swimsuit
- 20Rip Curl Women's Surf Stripe UPF Surf Suit
- 20Seafolly Women's Sea Dive Deep V-Neck One-Piece Swimsuit
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