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  • USWF


    Lead Reducing Carbon Block Filter by USWF 0.5 Micron 20"x2.5"

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

    • Specifically designed for lead filtration and independently tested to NSF standard 53 for lead reduction.

    • 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 2 1/2" filter housings including Pentek, Culligan, American Plumber and more.

    format_list_bulleted Features & Specs
    Package Qty: 1
    Manufacturer's Id: USWF-PB05-2025
    Actual Size (in): 20 inches (length) x 2 1/2 inches (outside diameter)
    Media: Coconut Carbon
    Operating Temperature (°F): 40 - 120
    Brand: USWF
    Advertised Size: 20 x 2-1/2
    Length (in): 20 in
    Outside Diameter (in): 4.5 in
    Media Type: Carbon Filter
    Micron Rating Nominal: 0⋅5
    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
  • Chlorine
  • Cysts
  • Dirt Sand Sediment
  • Lead
  • Sediment
  • Vocs
  • filter_alt Filter Life
    Filter Life (gallons): 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-PB05-2025 is a 0.5 micron 20"x2.5" carbon block that is specifically designed for lead reduction and proudly manufactured in the USA. It is constructed with an activated and acid washed coconut shell carbon block reinforced with a polypropylene wrap.
    The EPA has set the maximum contaminant level for lead in drinking water at zero. This is because lead is a toxic metal that is known to be harmful to human health even at low exposure levels. The most common way lead enters drinking water is pipe leaching. Some plumbing pipes were made from lead, and lead-based solder was commonly used to join copper plumbing. The amount of lead allowed in plumbing components was restricted in 1986, but small amounts of lead were still allowed until 2014 where the amount of lead allowed in plumbing parts was restricted even further.
    Standard activated carbon filters don't guarantee lead filtration. The type of carbon used, the method of activation, and how the carbon is formed in the filter can change how effective carbon is at lead reduction. NSF standard 53 for the reduction of lead requires filters to reduce lead from 150 ppb down to 5 ppb. That's over a 95% lead reduction. USWF lead reduction filters are independently tested to this standard so you can be confident that you're getting the lead filtration you need to protect 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 Pentek CBC-20, Hydronix SMCB-2520 with added lead reducing capability.

    USWF-PB05-2025   is comparable with the following part number(s)

    • FX20PB1
    • 06-250-20-MATRIKX
    • 06-250-20-MATRIKX
    • 06-250-20-GREEN
    • CTOCL-2520
    • F40L-20
    • SP-CC1-20
    • CB2520CL01
    • TIER1-CBC-20
    • PENTEK-CBC-20
    • CBC-20
    • 155309-43
    • 455904-43
    • 19-250-125-20