Water Filters
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US Water Pulsar Quantum Disinfection Cartridge for RO Systems
US Water Pulsar Quantum Disinfection Filter For Reverse Osmosis Systems This is a game changer! This works on any Reverse Osmosis System, as it contains Quantum Disinfection Media which kills all bacteria on contact. Quantum Disinfection Media is a chemical-free, power-free, maintenance-free, and extremely...- $44.95
$81.81- $44.95
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US Water 4.5" x 9.75" Pleated Filter Cartridge 20 Micron
4.5" x 9.75" 20 Micron US Water Polyester Filter CartridgeFeatures Pleated design for more surface area Bacteria and chemical resistant Cleanable and reusable in most applications and micron sizes Thermally bonded end caps to ensure better sealing Benefits Lower overall operating cost Longer filter...- $19.95
$33.25- $19.95
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Limeblaster 4.5" x 10" Replacement Cartridge | 222 Seal
4.5" x 10" US Water Limeblaster Cartridge - 222 Seal Features Pleated design for more surface area Bacteria and chemical resistant Thermally bonded end caps to ensure better sealing Benefits Completely safe for drinking water Easy to fit and low maintenance No electricity needed...- $54.95
$91.59- $54.95
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US Water DI Resin Cartridge 2.5" x 20" .6 GPM | USWF-2520-MB
Perfect for laboratories, reefkeeping and rinsing or plating operations Deionization cartridges provide solutions for a variety of applications that need the removal of ionic contaminants. Cartridges with mixed bed resins provide better than 16 megohm-cm quality water for ultra pure needs. Features & Benefits...- $57.95
$105.47- $57.95
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5-Stage USA Made Quantum Disinfection Reverse Osmosis Filter Pack | FP5S-USA
5-Stage Made in USA Filter Pack With Quantum Disinfection Cartridge Turns Any RO System into a Purifier! Our 5-Stage Filter Pack includes silicone to lubricate the O-Rings and the Quantum Disinfection Cartridge so that you can trust your water to be as clean as...- $84.95
$141.59- $84.95
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US Water 4.5 x 20 Carbon Block Filter Double O-Ring Seal | USWCB-4520-10-222
US Water Carbon Block Filter 4.5 inch x 20 inch - 10 Micron Filter With Double O-Ring Seal Filter elements are designed to fit US Water 4.5" x 20” Gray filter housings. This high quality carbon block media is manufactured from raw materials to...- $64.95
$118.21- $64.95
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Made in USA 4-Stage Reverse Osmosis Filter Pack
Our 4-Stage Filter Pack includes silicone to lubricate the O-Rings and RO Sanitizing Solution, so that you can trust you water to be as clean as it can be. Fits Most Sump-Type Filters Using 2-1/2" x 9.75" (10") Housings, Including the Following Models Watts...- $49.95
$83.25- $49.95
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US Water Interceptor PAC 2.5" x 10" DOE Filter Cartridge
US WATER ELECTRO-ABSORPTIVE NANOFIBER FILTER WITH POWDERED ACTIVATED CARBON AND AGION SILVER This is truly disruptive technology in that it uses electro-adhesion to remove sub-micron particles. The US Water Interceptor Pre-Filter has a 5 micron outer filter layer (which can be washed off if...- $38.95
$64.92- $38.95
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US Water Disruptor 4.5" x 10" 222 Filter Cartridge
US Water brings the latest in “Disruptive Technology” with our new US Water Disruptor Filter for Bacteria, Virus, Cyst, Tannin, Silica, Endotoxin… and more! Charged ZetaFiltration or CZF is manufactured with Nano Alumina Fibers that have a Zeta potential of 51 millivolts. A CZF...- $134.95
$224.92- $134.95
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3-Pack O-Rings For 4.5" US Water Gray Filter Housings
O-Rings for US Water 4.5" Gray Filter Housings - 3 Pack It's always a good idea to have spares Be sure to lubricate o-rings with silicone, not vaseline or petroleum-based products (Silicone lubricant sold separately) Buna-N O-Rings Pack of 3- $14.95
$18.69- $14.95
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Magna 2000 Dual High Flow Filter System
Magna 2000 4.5 x 20 Dual High Flow Filter System The one thing most filter housings have in common is that they are made in the Far East (usually China). Even the industry standard for “Big Blue” housings, Pentek, is no longer made in...- From $317.59
$581.67- From $317.59
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US Water Systems Spun Poly Sediment Filter 4.5" x 20" 5 Micron
US Water Systems Meltblown Spun Poly Sediment Filter - 4.5" x 20" 5 Micron US Water Systems Dual-Gradient Sediment filter cartridges are robust, high efficiency polypropylene melt blown depth filters with an internal polypropylene core for added strength. These filters utilize a multi-layered construction...- $34.95
$63.61- $34.95
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Filter wrench for 2.5" Slimline Housings
Filter Wrench Fits Most 2.5" x 10" & 20" Slimline Filter Housings Also fits Liquatec, Watts, Flowmatic, and Pentek 2.5" SlimLine housings Fits Hydronix HF2 & HF3 Series Filter Housings Hydronix Part # FW-1 Watts Part # WR100- $2.95
$3.69- $2.95
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3-Pack O-Rings For 2.5" US Water Slimline Filter Housings
O-Rings for all US Water Slimline 2.5" Filter Housings - 3 Pack Also fits Liquatec and Pentek 2.5" slimline housings It's always a good idea to have spares Be sure to lubricate o-rings with silicone, not vaseline or petroleum-based products (Silicone lubricant sold separately)...- $4.95
$6.19- $4.95
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US Water Residential Membrane 150 GPD
US Water 150Gallon Per Day Premium Reverse Osmosis TFC Membrane 11.75" x 1.75" 150 GPD Standard Size RO Membrane Operating Limits Membrane Type: Thin Film Composite Maximum Operating Temperature: 110°F (43°C) Maximum Operating Pressure: 125 PSI Maximum Feed Flow Rate: 1 GPM Minimum Concentrate...- $72.95
$91.19- $72.95
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US Water Systems Spun Poly Sediment Filter 2.5" x 20" 5 Micron
US Water Systems Meltblown Spun Poly Sediment Filter - 2.5" x 20" 5 Micron US Water Systems Dual-Gradient Sediment filter cartridges are robust, high efficiency polypropylene melt blown depth filters with an internal polypropylene core for added strength. These filters utilize a multi-layered construction...- $12.95
$23.57- $12.95
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US Water Magna 4.5" x 10" 1 Micron Replacement Cartridge | 222 Seal
4.5" x 10" US Water Magna Cartridge 1 Micron - 222 Seal Features Magna Seal - It has a positive o-ring seal unlike flat top filters Magna Media A 10 filter has 18 square feet of pleated polyester commercial grade media compare that to...- $49.95
$83.25- $49.95
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US Water Big Blue Commercial Filter Housing 4.5 x 20 | uswatersystems.com
4.5" X 20" Commercial-Grade Single Big Blue Cartridge Filter Housing With 3/4" or 1" Inlet/Outlet - Includes Pressure Relief Valve, Mounting Bracket, Wrench, and Screws The US Water 4.5 x 20 Big Blue Cartridge Housing is a Commercial Grade Housing that will handle heavy...- $119.95
$149.94- $119.95
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US Water 4.5" x 9.75" Pleated Filter Cartridge 1 Micron
4.5" x 9.75" 1 Micron US Water Polyester Filter CartridgeFeatures Pleated design for more surface area Bacteria and chemical resistant Thermally bonded end caps to ensure better sealing Benefits Lower overall operating cost Longer filter runs for fewer change outs Lower initial pressure drops...- $24.95
$41.59- $24.95
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US Water 4.5" x 20" Pleated Filter Cartridge 50 Micron
4.5" x 20" 50 Micron US Water Polyester Filter CartridgeFeatures Pleated design for more surface area Bacteria and chemical resistant Cleanable and reusable in most applications and micron sizes Thermally bonded end caps to ensure better sealing Benefits Lower overall operating cost Longer filter...- $24.95
$41.59- $24.95
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We carry replacement water filters for reverse osmosis systems, carbon block water filters, whole house systems, as well as cartridge filters for filter housings from manufactures such as Harmsco. The filters we carry can fill virtually need, or any size. We pride ourselves on customer satisfaction, so unlike other companies, we don't carry ineffective filters manufactured in China.
Replacement Water Filters
Whether you are looking for a replacement cartridge filter or a pleated filter for your home water filtration system, US Water Systems has the replacement water filter that you need. We carry stock in only the highest quality products, and don't sell anything that doesn't meet rigid standards.
Replacement Reverse Osmosis Filters.
Though all reverse osmosis systems are designed to filter water to incredibly pure standards very few companies can provide the amount of replacement reverse osmosis filters that US Water Systems carries. We offer nearly twenty different reverse osmosis brands, and as always, have a low price guarantee on everything we stock.
Why Should I shop US Water Systems for my Water Filters?
We know there is a sizeable amount of competition out there in the water filter business, many of our competitors offer inferior goods manufactured in China. While our competitors might find it convenient to sell lower quality water filters, we choose to sell very best brands from manufactures such as Harmsco. Another great reason to buy all of you water filters from US Water Systems is we have a low price guarantee, if you can find a better price on any of the products we sell we will beat it, no questions asked. We are confident in our ability to provide you the best filters for the lowest price.
US Water Systems Guarantee
We pride ourselves in providing the highest quality replacement filters for your needs at the lowest price, period. If you find a better price (including shipping) on any of the filters we have in stock we will beat it. No other company can offer filters at prices lower than ours, and we prove it every day.