PFAS in Swimwear: Safe Bathing Suit Options for Families

PFAS are called “forever chemicals” because they resist breakdown in both the environment and the human body. Swimwear manufacturers have used PFAS-based coatings for years to add water resistance, chlorine durability, and stain repellency. If your family spends any time at the pool or beach, it’s worth knowing what’s in your bathing suits and how to find cleaner alternatives.

For more on PFAS-free living, see our guide to PFAS free pillows and PFAS free gardening supplies. Headed for the water? Our guide to PFAS in neoprene wetsuits covers another common source of exposure at the beach.

What the Science Says About PFAS in Swimwear

Research published in peer-reviewed environmental health journals confirms that PFAS exposure from everyday consumer products adds meaningfully to your total body burden. Your liver and kidneys process these chemicals, but PFAS accumulate faster than they can be eliminated. Swimwear is a particular concern because you wear it against wet skin for extended periods, and water can accelerate chemical transfer from fabric to skin. Choosing PFAS-free swimsuits is one straightforward way to reduce that cumulative load.

How to Spot PFAS-Free Swimwear

Reading labels isn’t always enough. Manufacturers aren’t required to disclose PFAS use on consumer products in most U.S. states, so you need to look beyond the hang tag. Here’s what actually helps:

• Certifications matter. OEKO-TEX Standard 100, bluesign, and GOTS certification all prohibit PFAS in certified products. If a swimsuit carries one of these, you’re in good shape.
• Watch for code words. Terms like “water-resistant,” “stain-resistant,” “wrinkle-free,” or “grease-proof” often signal PFAS-based treatments. Not always, but it’s a red flag worth investigating.
• Ask the brand. Reputable companies will tell you whether their products use fluorinated treatments. If they dodge the question, that tells you something too.
• Check the PFAS Free Life Database for tested, verified products across hundreds of categories, including swimwear.

Safer Swimwear Recommendations

When replacing swimsuits that may contain PFAS, look for:

• OEKO-TEX certified swimwear that has been tested and confirmed free from harmful chemicals including PFAS
• Brands with published chemical policies. Companies like Patagonia have committed to removing PFAS from their product lines and publish their progress openly.
• Recycled polyester or nylon from certified sources that skip the fluorinated finish
• Certified organic cotton cover-ups and swim accessories, which typically exclude synthetic treatments

A great PFAS-free swimwear option is the La LiVita Racerback Athletic Swimsuit (PFAS-Free, OEKO-TEX), a one-piece with full coverage that’s explicitly certified PFAS-free and OEKO-TEX compliant, with over 100 purchases last month.

Tips to Reduce PFAS Exposure from Swimwear

Beyond choosing cleaner products, a few habits make a real difference:

• Wash new swimwear before the first wear. This can reduce surface chemical loads from manufacturing treatments.
• Ventilate your home. PFAS can off-gas from treated textiles and settle into household dust, which is a significant exposure route for young children.
• Rinse swimsuits after pool use. Chlorine can interact with fabric treatments, so rinsing promptly is good practice regardless.
• Filter your drinking water. A reverse osmosis system is the most effective household option for PFAS removal.

For a broader reduction strategy, check out our guide to top PFAS free water filters and the PFAS Free Life Database.

Frequently Asked Questions

Do all swimsuits contain PFAS?

No. But many swimsuits marketed as water-resistant or stain-resistant have historically used PFAS-based treatments. The safest approach is to look for third-party certifications like OEKO-TEX Standard 100 or to contact the manufacturer directly about their chemical policy.

How do I know if my swimwear has PFAS?

Without lab testing, it’s hard to know for certain. Watch for marketing terms like “water-repellent,” “stain-guard,” or “wrinkle-free,” which often signal PFAS treatments. Certifications like OEKO-TEX Standard 100 or bluesign prohibit PFAS. You can also search the PFAS Free Life Database at database.pfasfreelife.com for verified clean products.

Can I test my home for PFAS contamination?

Yes. You can test your drinking water for PFAS using certified laboratory testing services or at-home kits from companies like SimpleLab. For other types of exposure, from products or household dust, testing is more complex, but starting with your water is the most impactful first step. Your state health department may also offer resources or low-cost testing programs.