Weddell Duo Shower Head Filter, NSF Certified Chlorine Reduction, Lead-Free

From the brand

Welcome to Weddell Water

We believe self-care starts with the water you use every day.

Based in California and made in Korea, Weddell Water brings thoughtful design and greater transparency to everyday water wellness.

Our philosophy is simple: Proof, Not Promises. We only make performance claims backed by independent testing or third-party certification, so you can understand exactly what our products are verified to do.

NSF Certified Performance

NSF certified to reduce chlorine with independently verified PFAS and particulate reduction for cleaner, healthier water.

Weddell Duo FAQs

Why is my water pressure lower? This is typically an installation or filter-capacity issue. Check the alignment, O-rings, and that plumber’s tape isn’t obstructing flow.

How do I install Duo? Between the shower arm and shower head—no tools required.

When do I replace the filters? Every 5–6 months for one user under normal conditions. More challenging water conditions or heavier use may require more frequent replacement.

Shop Our Duo Shower Filters

Award Winning Shower Filter

Recognized by Good Housekeeping, ELLE, Better Homes & Gardens, The Manual, and TIME for innovation, design, and performance.

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NSF CERTIFIED PERFORMANCE: Weddell Duo is independently verified to reduce PFAS and particulates*. Featured as a top shower filter by Good Housekeeping, Better Homes & Gardens and WIRED. *Verified by an accredited 3rd-party U.S. laboratory. Not part of NSF Certification.
SUPPORTS SKIN AND HAIR HEALTH: Unfiltered shower water may contribute to dryness and discomfort over time. Weddell Duo helps improve overall shower water quality, supporting better skin hydration and a healthier scalp and hair feel for daily comfort and self-care.
WHY FILTERED WATER MATTERS: Unfiltered water can contain harmful contaminants like chlorine, PFAS, and microplastics, which may lead to skin dryness, irritation, and scalp problems. Long-term exposure to these pollutants has been linked to potential health risks, including hormonal disruption and skin conditions. By filtering these out, Weddell Duo ensures you experience cleaner, healthier water for a noticeable difference in your skin, hair, and overall well-being.
EASY INSTALLATION AND UNIVERSAL FIT: Designed for quick, tool-free installation, Weddell Duo is compatible with most standard shower heads including rain, fixed, and handheld types. Simply attach in minutes and upgrade your shower without plumbing tools or professional help.
FILTER WITH VISUAL MONITORING: Each filter length depends on water conditions. Clear dual cartridges allow you to visually monitor filter condition and replace when needed using a simple twist-to-change system for convenience.