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    Chloramine Reducing Filter by USWF Catalytic Carbon Block 1 Micron 20"x4.5"

    • Proudly manufactured in America supporting American workers and ensuring a high quality product.

    • Enhanced Catalytic Carbon to reduce chloramines in addition to regular chlorine, along with improved ability to reduce the rotten egg odor caused by hydrogen sulfide.

    • Made from coconut shell carbon, a renewable, and ecologically sustainable material with superior porosity and filtration performance compared to other carbon sources.

    • Fits most standard 20" x 4 1/2" filter housings including Pentek, Culligan, American Plumber and more.

    format_list_bulleted Features & Specs
    Package Qty: 1
    Manufacturer's Id: USWF-CHLOR1-2045
    Actual Size (in): 20 inches (length) x 4 1/2 inches (outside diameter)
    Media: Coconut Carbon
    Operating Temperature (°F): 40 - 120
    Brand: USWF
    Advertised Size: 20 x 4-1/2
    Length (in): 20 in
    Outside Diameter (in): 4.5 in
    Media Type: Carbon Filter
    Country of Origin: United States
    Micron Rating Nominal: 1
    Flow Rate (gpm): 1.0
    description Instructions
    1. Turn off water supply and release pressure in the filter housing. (Press red pressure-relief button on housing if present.)
    2. Unscrew filter housing sump. (Use filter wrench if nessecary.)
    3. Discard used filter cartridge. Remove the sump o-ring, wipe clean and set aside.
    4. Wash housing with dish soap and warm water using a nonabrasive sponge or cloth. Rinse thoroughly
    5. If unpleasent odor is present disinfect filter housing. Fill 1/3 with water. Add about 1 tablespoon of bleach and scrub to disinfect. Rinse thoroughly
    6. Lubricate o-ring with clean silicone grease and place back onto the sump housing. (Check for cracks or imperfections on the o-ring while lubicating, and replace o-ring if damaged.)
    7. Insert new filter cartridge ensuring that it is seated properly in the sump housing.
    8. Screw the sump housing back onto the cap and hand-tighten. Do not use the filter wrench to prevent over tightening.
    9. Turn on the water supply and check for leaks before leaving the installation.
    10. Flush out any air from the filter housing. (Using the red pressure-relief button, or a nearby down-stream faucet.)
    warning_amber Contaminants Reduced
  • Bad Taste And Odor
  • Chloramine
  • Chlorine
  • Dirt Sand Sediment
  • Hydrogen Sulfide
  • Sediment
  • Sulfur Odor
  • Vocs
  • filter_alt Filter Life
    Filter Life (gallons): 24000
    Filter Life (months): 6 months

    Prop65 warning applies to products that contain carbon media. Click here for more details

    WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer and birth defects, or other reproductive harm. For more information go to www.p65warnings.ca.gov

    USWF-CHLOR1-2045 is a 1 micron 20"x4.5" catalytic carbon block that is specifically designed for chloramine reduction and proudly manufactured in the USA. It is constructed with an activated coconut shell carbon that has been processed to change its electronic structure and create the highest level of catalytic activity to reduce chloramine and hydrogen sulfide. The catalytic carbon in the USWF chloramine reduction series not only provides filtration for chloramines and hydrogen sulfide, but offers improved chlorine and VOC reduction compared to standard activated carbon.
    In 2022 the EPA stated that "More than one in five Americans use drinking water treated with chloramines." This has nearly doubled in the last decade and because chloramines offer several advantages to water treatment facilities industry experts expect the trend of growth in chloramine usage to continue.
    Chloramines are difficult to filter out of drinking water, creating an issue for consumers who are used to using standard activated carbon filters that have worked well to filter chlorine in the past. Standard activated carbon does an excellent job at filtering chlorine because it is highly reactive, but does very little to remove less reactive chloramine. The solution to this is to modify standard activated carbon into catalytic carbon. Catalytic carbon is processed to change its electronic structure so that it can act as a catalyst to chemically decompose chloramines to remove them from water.
    What's the difference between chloramines and chlorine? While they sound very similar and are both used in municipal water treatment they differ in important ways especially when it comes to filtering them out of your water. Chloramine is a compound created by combining free chlorine with ammonia, and offers water treatment facilities a couple of significant benefits compared to free chlorine. Chloramine is not as reactive as chlorine so it produces less disinfection byproducts like trihalomethanes and haloacetic acids, and chloramine is more chemically stable so residual chloramine stays in water for a longer period of time, and provides better protection against bacterial regrowth throughout a water distribution network. However, being less reactive and stable in the water also makes chloramine much more difficult to remove from water once it enters your home.
    All USWF carbon block filters are constructed from coconut carbon. Compared to other forms of activated carbon coconut shell carbon has more surface area and a higher density of micro pores leading to an overall greater porosity. The increased porosity of coconut carbon provides increased adsorption and filtration of volatile organic contaminants which is why it is considered as one of the best materials for water filtration. Not to mention that coconut shells are considered to be the greenest most environmentally friendly sources of carbon available. It is renewable, grows year round, and doesn't harm the trees allowing for a sustainable, continuous source of high quality carbon.
    This American made filter is a compatible replacement for other popular activated carbon block filters like the Hydronix CB-45-2001 but with the enhanced filtration properties of catalytic carbon media.

    USWF-CHLOR1-2045   is comparable with the following part number(s)

    • ChlorPlus-20BB
    • CRFC20-BB
    • FXB20-CHLORA
    • AF-20-1042-BB
    • F-CC-20-4
    • CB-20-6301-BB-CH
    • CBCM-4520-0.5
    • USWCB-4520-CL
    • Neo-Pure CHLM-4520
    • 355753-43