Commercial Saltless Water Softener Replacement Kit

Commercial Saltless Water Softener Cartridge Filter Kit For ICS-CTP35

  • 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 on glass
  • Item Number ICS-CTP35K

Typical application = Well and City water supplies

3rd party NSF approved PolyHalt and system components Independent 3rd Party Certified

See Complete Water Treatment System

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Or order by phone: 509-674-4000

Product Description

PolyHalt® Commercial Saltless Water Softener Replacement Cartridge (ICS-CTP35K)

Benefits Include:

    • Saltless water softening
    • Eco-friendly treatment
    • Small size
  • Simple annual maintenance
  • Legal where salt based salt-basedare banned


  • Light Commercial / Industrial applications where there is the following problems
    • 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 on glass


For Complete treatment combine the ICS-CTP35 with the;
ICS-CTS05M Light Commercial Sediment / Particulate Filter System and/or the
ICS-CTTO Light Commercial Taste & Odor Filter System

Contact Us for information on higher flow systems.

Additional information

Weight 9 lbs
Dimensions 8 x 8 x 36 in

ICS-CTP35; Light Commercial PolyHalt Saltless Water Softener Replacement Cartridge Kit

Dimensions: 6″ x32″
Max. Capacity: 200,000 Gallons or 12 months
Max. Flow: 35 gpm (call for higher flow systems)
Max. Pressure: 100 psi
Min. Temperature: 40° F
Max. Temperature: 90° F
Number of Filters: 1


General PolyHalt® Notes:

  • Just like salt-based softeners, there will be spots but any spots will be easier to clean.
  • Water will not feel slippery or slimy with PolyHalt® a softener like it does with a traditional salt softener
  • Hardness test results will be equal pre & post treatment. PolyHalt® makes hardness harmless without removal.
  • Water could be worse after install while plumbing is being cleaned. May need to clean aerators, showerheads etc.


Click / Press Here to View Installation Instructions

Raw Water Parameters / Conditions for Operation

Hardness: Max 25 grains (427 parts per million)
Hydrocarbons: None Allowed
Hydrogen Sulfide: None Allowed
Iron & Manganese (Clear Only): Less than 6 parts per million combined
Iron Bacteria: None Allowed
pH: Between 6.0 and 8.5
Sediment: Not Applicable
Silica: Less than 100 parts per million
Tannin: None Allowed
Turbidity: Less than 1 NTU

Notes for all ICS systems:

  • If Raw Water Parameter Condition for Operation = “N/A” 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

The ICS-CTP35K filter is the replacement cartridge for our ICS-CTP35 Saltless light commercial water treatment system and is a high flow rate version of our wall mount PolyHalt® Systems. With the ability to treat flows rates of up to 35 gpm and up to 200,000 gallons the ICS-CTP35K is designed with light commercial applications in mind. Industries these are being used in include; baking, brewing, dairy milking, food preparation and restaurant.

PolyHalt® filter systems are designed to sequester metals dissolved in the water and protect plumbing, fixtures and appliances from damages caused by corrosive or low pH water.

Without using salt, power or producing waste water PolyHalt® treated water, in many ways, behaves as though the metals are not present at all. Your PolyHalt® treated water will not stain, soap scum will not form on tubs, showers and sinks and water spots will easily clean up. PolyHalt® will also prevent blue/green staining caused by copper and etching and pitting caused by silica.

For assistance with your treatment system please contact us and we will be happy to help. Maximum service life is 1 year and may be less depending on your water quality and the volume of water treated.

O3 Water Systems, Inc.
“Limited” CASCADIAN® Integrated Cartridge Solutions

Water Treatment System Warranty

During the time periods and subject to the conditions hereinafter set forth, O3 WATER SYSTEMS, will repair or replace to the original user or consumer, any portion of your new ICS (Integrated Cartridge Solutions) system which proves defective due to defective materials or workmanship of O3WS. Warranty period is 10 years from date of installation. At all times O3WS shall have and possess the sole right and option to determine whether to repair or replace defective equipment, parts, or components. Damage due to conditions beyond the control of O3WS is NOT COVERED BY THIS WARRANTY.

LABOR, ETC., COSTS: O3WS shall IN NO EVENT be liable for cost of removal, installation, transportation, or any other charges which may arise in connection with a Limited Warranty claim.

THIS WARRANTY WILL NOT APPLY: (a) To defects or malfunctions resulting from failure to properly install, operate or maintain the unit in accordance with good trade practices of professionals; (b) to products which are not installed in accordance with applicable local codes and ordinances (c) to products modified at any place other than the point of original manufacture (d) to products moved from the original installation location; (e) to normal maintenance services and parts used in connection with such service; (f) to failures resulting from the abuse, physical damage, fire, freezing, acts of god, accident or negligence; (g) to products used for purposes other than for what they were designed and manufactured, and (h) cartridge filters and replacement kits.

RETURN OF REPLACED COMPONENTS: To obtain specific performance under this Limited Warranty, the defective product must be returned freight prepaid to O3WS in Cle Elum Washington or other such place as O3WS may designate together with proof of purchase, installation date, failure date, and supporting technical data.

PRODUCT IMPROVEMENTS: O3WS reserves the right to change or improve its products or any portions thereof without being obliged to provide such change or improvement of units sold and/or shipped prior to such change or improvement.

WARRANTY EXCLUSIONS: As to any specific O3WS product, after the expiration of the time period of the warranty applicable thereto as set forth under the heading “Warranty Periods” above. Cosmetic damage that does not affect the process functionality of the equipment is not covered. O3WS Industries makes every effort to ensure that all illustrations and specifications are correct. However, these do not imply a warranty that the product is merchantable or fit for a particular purpose, or that the product may not vary from the illustrations and specifications. THERE ARE NO EXPRESS OR IMPLIED WARRANTIES, INCLUDING MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, WHICH EXTENDS BEYOND THOSE WARRANTIES DESCRIBED OR REFERRED TO ABOVE.


Some jurisdictions do not allow the exclusion or limitation of incidental or consequential damages and some jurisdictions do not allow limitations on how long implied warranties may last. Therefore, the above limitations or exclusions may not apply to you. This Limited Warranty gives you specific legal rights and you may also have other rights which vary from jurisdiction to jurisdiction.

For your warranty protection (Magnason-Moss Warranty Act) the WARRANTY REGISTRATION CARD MUST BE COMPLETED AND RETURNED TO O3WS WITHIN TEN (10) DAYS OF INSTALLATION. In the absence or other suitable proof of installation date, the effective date of this warranty will be based upon the date of manufacture plus thirty (30) days. Direct all notices, etc. To: Service Department, O3 Water Systems, Inc., 5301 Airport Rd, Cle Elum WA, 98922