How to Reduce Microplastic Emissions from Sportswear During Washing
How to Reduce Microplastic Emissions from Sportswear During Washing
Sportswear is designed to be lightweight, breathable, and quick-drying—qualities that often come from synthetic materials like polyester, nylon, and spandex. But when we wash these fabrics, tiny plastic fibers, known as microplastics, are released into the water. Many of them pass through wastewater treatment plants and end up in rivers, lakes, and oceans. The good news is that with a few simple changes to your laundry habits, you can significantly reduce this pollution. Here’s how to protect both your gear and the environment.
Why Sportswear Releases Microplastics
Most athletic clothing is made from synthetic fibers that don’t break down easily. During washing, friction and heat cause small fibers to shed and flow out with the wastewater. While U.S. wastewater treatment plants capture a portion of these particles, the smallest ones can still escape and enter natural waterways, where they may be ingested by fish and other wildlife.
The more frequently and aggressively you wash your clothes, the more fibers are released. So reducing microplastic emissions isn’t just about how you wash—it’s also about how often.
Wash Less Often—and More Gently
The most effective step is simply to wash less. Sportswear doesn’t always need a full wash after every workout. Often, airing it out or rinsing it briefly in cold water is enough.
When you do wash:
- Run full loads. A full washing machine reduces friction between garments, which helps limit fiber shedding.
- Use cold or warm water. Washing at lower temperatures (around 86°F/30°C) is gentler on fabrics and saves energy.
- Choose a gentle cycle. Avoid high-speed spin cycles or heavy-duty programs that increase wear and tear.
- Skip fabric softeners. They can damage fibers and reduce the performance of moisture-wicking fabrics.
These small adjustments can extend the life of your clothes and reduce their environmental footprint.
Use Washing Bags and Filters
Special laundry bags and filters are designed to capture microplastics before they reach the drain.
- Laundry bags such as the Guppyfriend or similar products act as a barrier, trapping many of the fibers that would otherwise wash away.
- External filters can be installed on your washing machine’s drain hose to catch microplastics before the water leaves your home.
Be sure to clean the bag or filter regularly and dispose of the collected fibers in the trash—not down the sink or toilet.
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Choose Smarter Materials
You can make a difference even before you start washing—by choosing what you buy.
- Opt for natural fibers like merino wool or organic cotton when possible. Wool, for example, is naturally odor-resistant and often requires fewer washes.
- Look for sustainability certifications such as OEKO-TEX or Bluesign, which indicate higher environmental standards in production.
- Invest in quality. Cheaper garments tend to wear out faster and shed more fibers. A few durable, well-made pieces are better than a closet full of disposable ones.
Some U.S. and global brands are also developing recycled or low-shedding fabrics, so keep an eye out for innovations in sustainable sportswear.
Dry and Store Properly
Tumble drying can be harsh on synthetic fibers and increase fiber breakage. Whenever possible, air-dry your clothes—preferably outdoors or in a well-ventilated space. It saves energy and helps your gear last longer. Store your sportswear in a dry, airy place to prevent odors that might lead to unnecessary washing.
Small Changes, Big Impact
Microplastic pollution can feel like an overwhelming problem, but individual actions matter. If many people adjust their laundry habits, the collective impact can be significant. By washing less often, using lower temperatures, choosing better materials, and installing filters, you can help protect waterways and marine life—while keeping your sportswear fresh, functional, and ready for your next workout.
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