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ICS-SP0621K NuvoH2O Studio Alternative PolyHalt® Softener


ICS-SP0621K Cartridge Filter Replacement Kit

The ICS-SP0621K Cartridge Filter Replacement Kit is specifically designed to perfectly fit the Nuvo H2O Studio housing without modification. It is engineered as an upgrade to the Nuvo H2O Studio series. It is both a sediment filter and salt free water softener and lasts twice as long while treating more problems and producing better water.

  • First treatment is a sediment filter to remove particles, protect and clarify
  • Second treatment is PolyHalt® salt free softener and water conditioner

Other Specs

Filter Size: 2.5" x 10"

Connection: 3/4" FNPT

Treatment Included: S, Sediment P, PolyHalt 0621, Nuvo Studio K, Replacement Kit

  • 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, no questions asked

Frequently Asked Questions

Where does the ICS system 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.

Rely on our expertise to deliver the simplest water treatment

Customer Reviews

Based on 5 reviews
Rare Jem
Customer service?

Had questions when I received filter. Left a message on their customer service number and more than a week later, I have not received a response

Hi Jeanette, I sincerely apologize no one responded to your message. Thank you for letting me know about your poor experience. This is not how we behave and are looking into reasons it happened so we might improve our customer service. Please let me know if there is anything further we can help with. Gabe - Founder of Cascadian Water.

Jospeh Dontzig. (Santa Fe, US)
It works!

A few years ago I switched from a water softening system to NUVO, but found that the NUVO did very little because I live in an area where I have a well. The company that services my well suggested I purchase Cascadian. The difference is amazing. The mineral buildup with which I was dealing on my faucets and shower heads has almost completely disappeared, and the water tastes just fine. So, no 50 pound bags of potassium or sodium, and no NUVO filters that were a waste of money. I'm obviously a fan of Cascadian.

Hi Jospeh, Thank you soooo much for sharing your experience after switching from NUVO to Cascadian. Your review helps others learn from your experience and we love it!

Ralph Weickel (Lexington, US)
Makes Life Easier

The Cascading Filter ICS-SP1222K is easy to install and does an excellent job of taking sediments out of the water - use a well and the filter prevents sediments from clogging shower nozzle. Highly recommend and a good value.

Hi Ralph, Thank you for the great review.