Welcome to Cascadian Water, your trusted provider of high-quality salt-free water filters. Our filters are not only perfect for residential use, but also for commercial applications like offices and restaurants.

Finding Your Replacement Filter

To find your replacement filter's part number, simply add a 'K' to the end of your system's part number. For example, if your system's part number is ICS-SP, the corresponding replacement filter's part number would be ICS-SPK. Look at the label on your treatment system to find both part numbers.

Why Replace Your Filters?

Over the lifespan of your residential salt-free water treatment system, replacing filters is essential to maintain optimum performance and results. We recommend switching out your salt-free water filters every year. If you notice any performance issues earlier, it may be time for a replacement.

Our Filter Performance

Our filter replacements are top-tier but don't just take our word for it. Check out these verified reviews that highlight the effectiveness of our filters.

The Cascadian Water Difference

Cascadian Water has been a leader in the water treatment industry for over 30 years. Our commitment to quality and customer satisfaction has earned us over 5000 happy customers. Don't just take our word for it – check out our customer testimonials for real-world experiences with our products.

Save Time and Money With Our Subscription Service

To save you time, money, and hassle, we've added a Subscribe and Save 10% option for all of our replacement filter cartridges. Want to know more? Click here to learn about our subscription service.