Water-Resistant Swimwear, ranked by PFAS safety
15 products graded from Bad to Excellent, safest first. None grade Good or better yet, so we show the full ranking and the least-concerning options first.
Start here
The best non-toxic water-resistant swimwear, ranked safest first
Graded and flagged Poor and Bad, we’d swap these
J.Crew
Women's Gail One-piece
Polyamide/nylon blend (swimwear)
Lower PFAS concern for basic nylon.
⚠Risky category by default
J.Crew
Lana Classic Sculpt One-piece
Nylon/spandex blend (swimsuit)
Lower concern. Standard swimwear with no known PFAS treatment triggers.
⚠Risky category by default
J.Crew
Women's Squareneck One-piece
Nylon/spandex blend swimwear
Lower concern. Untreated swimwear fabric, but J.Crew makes no PFAS promises.
⚠Risky category by default
J.Crew
Women's Long-torso Nia ruched squareneck one-piece in gingham
Cotton-blend gingham weave (likely cotton/polyester blend)
Lower concern. Basic apparel with no coatings flagged. J.Crew doesn't disclose finish chemistry.
⚠Risky category by default
J.Crew
Women's Sydney Scrunchie One-Piece Swimsuit
Nylon/polyamide blend swimsuit fabric
Lower concern. Standard swimsuit with no known PFAS-risk treatment. No brand transparency.
⚠Risky category by default
J.Crew
Women's Long-Torso Lana One-Piece
Nylon/spandex blend swimwear
Lower concern for typical swimwear.
⚠Risky category by default
J.Crew
Women's Long-Torso Gemma One-Piece
nylon/spandex blend swimwear
Lower concern. Typical swimwear with no known PFAS red flags. J.Crew doesn't disclose treatment details.
⚠Risky category by default
Nike
Women's V-Neck Tankini Top
Nylon/polyester blend (typical tankini construction)
Lower PFAS concern for basic tankini.
⚠Risky category by default
Lands' End
Women's DD-Cup Tummy Control Square Neck Underwire Tankini Swimsuit Top
nylon/spandex blend with tummy-control panel; likely water-resistant treatment
PFAS
High concern
Azo dyes
Limited concern
Spandex degradation and skin contact
Limited concern
Formaldehyde / VOCs
Limited concern
High PFAS risk from likely water-repellent coating finish.
⚠Waterproof or stain-proof treatment
Lands' End
Women's Tugless Monokini Swim Dress Swimsuit
Nylon/polyamide blend with water-repellent coating (water-repellent coating) finish
PFAS
Moderate concern
Heavy metals
Limited concern
Microplastics
Limited concern
High PFAS risk. Avoid if you're concerned. Lands' End won't discuss water-repellent coating chemicals.
⚠Waterproof or stain-proof treatment
Lands' End
Women's DD-Cup Tummy Control Chlorine Resistant Soft Cup Tugless One Piece Swimsuit
Nylon/polyester blend with chlorine-resistant treatment (water-repellent coating likely)
PFAS
High concern
Synthetic fiber microfiber shedding
Limited concern
Elastic degradation and material leaching
Limited concern
High PFAS risk. Chlorine-resistant swimwear typically uses PFAS-based water-repellent coating finishes.
⚠Waterproof or stain-proof treatment
Lands' End
Women's Tugless Sporty DDD-Cup Chlorine Resistant One-Piece Swimsuit
Nylon/polyester blend with chlorine-resistant and water-repellent coating (water-repellent coating) finish
Formaldehyde / VOCs
Limited concern
water-repellent coating degradation and leaching
Moderate concern
Microplastic shedding from synthetic fibers
High concern
High PFAS risk. Avoid unless Lands' End discloses or verifies water-repellent coating chemistry.
⚠Waterproof or stain-proof treatment
J.Crew
Women's Claudia One-piece Swimsuit
Nylon/polyester blend with water-repellent coating finish
PFAS
Limited concern
Microplastic shedding
Moderate concern
High PFAS risk. Skip until J.Crew discloses water-repellent coating chemistry or commits to PFAS-free.
⚠Waterproof or stain-proof treatment
Nike
Women's Water Texture Jacquard V-Neck One-Piece Swimsuit
Nylon jacquard with water-repellent coating (water-repellent coating) finish
Formaldehyde / VOCs
Limited concern
Microfiber shedding during laundering
Moderate concern
Coating degradation and leachables from water-repellent coating breakdown
Limited concern
High PFAS risk. Skip until Nike discloses water-repellent coating chemistry or commits to PFAS-free.
⚠Waterproof or stain-proof treatment
Nike
Women's Shoreline Scoop Neck One Piece Swimsuit
Nylon/polyester blend with water-repellent coating finish
Antimony (polyester catalyst residue)
Limited concern
Elastane/spandex degradation and leaching
Limited concern
water-repellent coating finish degradation and chemical release
High concern
High PFAS risk. Skip until Nike discloses water-repellent coating chemistry. Swimwear often uses PFAS water repellents.
⚠Waterproof or stain-proof treatment
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