Carbon Filters

About Carbon Filters

Common Sizes

Before the early to mid-1990’s, granular activated carbon filters were the norm for chlorine and organics removal, but advanced water treatment techniques demanded better, more refined filtration. It was at that juncture that manufacturers started a strong, one-piece carbon block with an extended life. Carbon block filters are unsurpassed at removing chlorine, sediment, taste, odor and organic contaminants, and due to its highly uniform molded structure, a carbon block filter eliminates the release of carbon fines, as well as channeling and bypass.

20 Products

US Water 2.5 x 10 Carbon Block Filter | USWCB-2510-10
REGULAR PRICE: $18.25 SALE PRICE: $10.95
US Water Chloramine Carbon Block Filter | USWCB-2510-CL
REGULAR PRICE: $58.25 SALE PRICE: $34.95
US Water Lead & Cyst Carbon Block Filter | USWCB-2510-LD
REGULAR PRICE: $33.25 SALE PRICE: $19.95
US Water 2.5 x 20 Carbon Block Filter | USWCB-2520-10
REGULAR PRICE: $33.25 SALE PRICE: $19.95
US Water Chloramine Carbon Block Filter | USWCB-2520-CL
REGULAR PRICE: $149.92 SALE PRICE: $89.95
US Water 4.5 x 10 Carbon Block Filter | USWCB-4510-10
REGULAR PRICE: $48.25 SALE PRICE: $28.95
US Water 4.5 x 20 Carbon Block Filter | USWCB-4520-10
REGULAR PRICE: $88.25 SALE PRICE: $52.95
US Water Chloramine Carbon Block Filter | USWCB-4520-CL
REGULAR PRICE: $199.92 SALE PRICE: $119.95
US Water Fluoride Reduction Filter Cartridge 2.5" x 10" | USWF-2510-BC
REGULAR PRICE: $66.58 SALE PRICE: $39.95
US Water Fluoride Reduction Filter Cartridge 2.5" x 20" | USWF-2520-BC
REGULAR PRICE: $149.92 SALE PRICE: $89.95
US Water Fluoride Reduction Filter Cartridge 4.5" x 10" | USWF-4510-BC
REGULAR PRICE: $166.59 SALE PRICE: $99.95
US Water Fluoride Reduction Filter Cartridge 4.5" x 20" | USWF-4520-BC
REGULAR PRICE: $283.26 SALE PRICE: $169.95
Granular Activated Carbon 2.75" x 20" Filter Cartridge | GAC20
REGULAR PRICE: $44.92 SALE PRICE: $26.95
US Water Pulsar Quantum Disinfection Cartridge for RO Systems
REGULAR PRICE: $74.92 SALE PRICE: $44.95
US Water 10 Inch Inline Carbon Filter | INLRO-14
REGULAR PRICE: $24.92 SALE PRICE: $14.95
US Water Pulsar Quantum Disinfection & GAC Cartridge for RO Systems
REGULAR PRICE: $83.25 SALE PRICE: $49.95
US Water Radial Flow Carbon Filter 4.5" x 10" | RFC-BB-10
REGULAR PRICE: $78.25 SALE PRICE: $46.95
US Water Radial Flow Carbon Filter 4.5" x 10" | 222 Seal
REGULAR PRICE: $114.92 SALE PRICE: $68.95
US Water Radial Flow Carbon Filter 4.5" x 20" | RFC-BB-20
REGULAR PRICE: $149.92 SALE PRICE: $89.95
US Water Radial Flow Carbon Filter 4.5" x 20" | 222 Seal
REGULAR PRICE: $173.25 SALE PRICE: $103.95
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About Carbon Filters

Carbon block filters are manufactured using finely powdered activated carbon particles that have been bonded together to form a totally uniform, solid profile with superior adsorptive capacity and kinetic efficiency.  Most carbon block filters and cartridge elements are designed to flow in a radial, outside to inside direction resulting in low pressure drop, high flow rate and increased dirt holding capacity.


Manufactured entirely from FDA approved materials, a carbon block filter is suitable for residential point-of-use water filtration, as well as, commercial and food service applications. Our carbon block filters are manufactured from high purity activated carbon and is designed to fit most standard household and commercial housings.

In summary, carbon block filters have supplanted GAC filters in most cases, due to superior filtration of chlorine and chemicals as well as elimination of having to rinse carbon fines.  US Water carries carbon block filters from AXEON, Harmsco, Hydronix, Omnipure and of course, US Water’s own Made in America carbon filters. 

Common Sizes

We offer carbon filters in the following “industry standard” sizes:

  • 2-1/2” x 10” (9-7/8”)
  • 2-1/2” x 20”
  • 4-1/2” x 10” (9-7/8”)
  • 4-1/2” x 20”

If you are not sure what you need or what style or type is appropriate, call one of our Certified Water Specialists at 800-608-8792 or e-mail us at support@uswatersystems.com