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Cascadian Water


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Treatment Included

T, Taste & Odor P, PolyHalt U, Point of Use K, Replacement Kit


Single Appliance or RV

Filter Size

2.5" x 10"

Cascadian ICS-TPUK Point of Use Carbon Filter and Salt Free Softener Cartridge Replacement Filter. Image


ICS-TPUK cartridge filter replacement kit

The ICS-TPUK cartridge filter replacement kit is designed specifically for the Cascadian ICS-TPU system and engineered to improve taste and odor and soften and condition the water. Its smaller size makes it perfect for smaller Point of Use applications. Works well for recreational vehicles, ice makers, espresso machines.

Two high performance treatments;

  • First treatment is quality activated carbon to improve taste & odor
  • Second treatment is PolyHalt® salt free softener and water conditioner

Does not include Housing O-Rings

Includes Sil-Lube, replacement instructions, reminder card with timer.

Rely on our expertise to deliver the simplest water treatment

– Cascadian Water has served the needs of our community for nearly 30 years

  • Eco-Friendly

    No water waste

  • Legal Everywhere

    Our filters can be used where salt softeners are banned

  • Easy Maintenance

    Change filters once or more per year

  • 60 Day Guarantee

    Return it, not questions asked

  • Filter Subscriptions

    Purchase your first replacement filters after a year with your system and select the subscription option to save time and 10% off.

    Filter Subscription
  • Product Specification

    Each product has specific capabilities and unfortunately can't treat every type of water. Find details on the specification.



Where does ICS go in my Home?

Where it can fit, and where it can easily get access to your home's water source. This is typically a garage, crawlspace, or even a closet. If you have questions a plumber would be able to help you find the best spot. During maintenance you'll need to fit a bucket and have enough space to turn the sump wrench which comes with your system.

How often do I replace the filters?

Most people replace their filters once per year, or sooner if they start seeing issues with their water again. Learn about water issues here

What is the return policy?

If you are unsatisfied within 60 days of purchase, return the housing and we'll refund your purchase no questions asked.

How fast do you ship?

We typically ship same business day if the order is placed before 2 pm PST using UPS ground.

Does this include housing o-rings?

No, the replacement kits do not come with o-rings.

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