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Replacement Filter for ICS-SP PolyHalt Softener with Sediment Filter


Item Number: ICS-SPK

Whole House Water Filter For;

  • Removing sediment and particles to clarify water
  • Hard water – white spots, hard scale buildup, gray dingy hard laundry
  • Staining – red/orange, brown/black, blue/green
  • Low pH
  • Appliance protection
  • Silica etching and pitting (spots won’t come off glass surfaces)


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The Cascadian ICS-SPK is the Replacement Filter for ICS-SP Systems

The ICS-SPK filter is made specifically for the Cascadian ICS-SP system with the PolyHalt salt free ion bond softener and multimicron sediment filter. For more information on PolyHalt see What is a PolyHalt Salt Free Softener?

PolyHalt salt free ion bond softener and sediment filter Details

  • Long lasting multimicron sediment filter technology
    • Cleaner clearer water with sediment and particles down to 5 micron removed
  • PolyHalt® salt free ion bond water softener:
    • Easier cleaning and maintaining of home or business
    • Brighter, whiter, softer laundry
    • Soaps, shampoos, conditioners etc. will work better and you will use less
    • No slippery or slimy feeling
    • Low maintenance
    • A legal replacement for conventional salt-based water softeners
    • Approved for use where conventional salt-based softeners are banned
      • Not subject to any regulations banning or restricting salt softeners including those in California
  • Treatment for silica etching and pitting of glass

Benefits compared to conventional salt-based water softeners and backwashing filters

  1. Eco-friendly treatment
    • Salt free softening
      • Save 30± bags of salt per year
    • Produces no waste water
      • No backwash or regeneration cycles
      • Save 10,000± gallons of wastewater per year
    • No power required to operate
  2. Small size
    • 20 times smaller than typical salt softeners and backwashing media filters
    • Does not take up valuable floor space - system hangs on the wall
  3. Simple installation
    • Easy plumbing connections
    • No power required
    • No waste water drain
    • No salt tank
  4. Simple maintenance
    • Replace cartridge filter kit annually
    • Time required – approximately 15 minutes
    • Includes drain on filter housing for clean no spill easy filter changes
  5. Less expensive
    • Lower cost to buy, install and maintain
    • Less time to maintain
    • Save $100's and 2-3 days each year compared to conventional salt-based softeners

How it works – See “HOW IT WORKS” Tab

Other Products to consider: To add filter to remove chlorine taste & odor consider the ICS-STP. IF you don't need a filter for sediment but want to reduce chlorine and soften the water please see our ICS-TP

Warning in the State of California;    WARNING: Cancer and Reproductive Harm –

Raw Water Parameters / Conditions for Operation

Bacteria: None Allowed
Chlorine: NA
Colloidal Iron: NA
Hardness: Max 25 grains (427 ppm)
Hydrocarbons, oils, or lubricants: None Allowed
Hydrogen Sulfide: None Allowed (use ICS-H to remove)
Iron & Manganese (Clear Only): <6 ppm Combined
Iron & Manganese (Colored): <1 ppm
Iron Bacteria: None Allowed
Organic Iron: None Allowed
pH: >6.0 and <8.5
Sediment: >5 micron
Silica: <100 ppm
Tannin / Organics: None Allowed
Turbidity: Less than 1 NTU


Notes for all ICS systems:

  • If Raw Water Parameter Condition for Operation = “NA” the systems will not affect and is not affected by concentrations of that parameter typically found in drinking water
  • If Raw Water Parameter Condition for Operation = “None Allowed” Remove through adequate pre-treatment
  • If Raw Water Parameter Condition for Operation = “Not for extreme levels” The cartridge useful life may be shortened and require more frequent replacement.
  • Extreme levels of any parameter may shorten useful cartridge life
  • Stated “Max Capacity” may be reduced by overall raw water chemistry
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