Water Filters
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US Water 4.5 x 10 Carbon Block Filter | USWCB-4510-10
US Water Carbon Block Filter 4.5 inch x 10 inch - 10 Micron Filter Filter elements are designed to fit most standard 10” big blue style filter housings. This high quality carbon block media is manufactured from raw materials to precise specifications entirely in...- $28.95
$52.69- $28.95
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2 Ounce Tube Silicone Lubricant for O-Rings
US Water Systems Silicone is Specially Formulated Silicone for all Rubber Parts and O-Rings Comes in a handy, durable, re-sealable tube that will last for years. Certified to NSF-61 standards and is designed for use in potable water systems where NSF certification is required....- $18.95
$23.69- $18.95
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US Water Magna 4.5" x 10" 5 Micron Replacement Cartridge | 222 Seal
4.5" x 10" US Water Magna Cartridge 5 Micron - 222 Seal Features Magna Seal - It has a positive “o-ring seal” unlike “flat top” filters Compared to many other pleated filters on the market, it offers significantly more filtration surface area—typically 30-50% more—allowing...- $46.95
$78.25- $46.95
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US Water Disruptor 4.5" x 20" 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 Zeta Filtration or CZF is manufactured with Nano Alumina Fibers that have a Zeta potential of 51 millivolts. A...- $235.95
$393.25- $235.95
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US Water DI Resin Cartridge 2.5" x 10" .3 GPM | USWF-2510-MB
US Water .3 GPM 2.5" x 10" Replacement Ultra High Purity DI Cartridge For TDS Reduction 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...- $30.95
$56.33- $30.95
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US Water DI Resin Cartridge 4.5" x 20" 1.5 GPM | USWF-4520-MB
US Water 1.5 GPM 4.5" x 20" Replacement Ultra High Purity DI Cartridge For TDS Reduction 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...- $125.95
$259.92- $125.95
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Magna Pre-Filter | Up to 25 GPM
Magna is a Latin word which means great, and that is the true and accurate meaning of the US Water Magna Filter. The Magna Filter comes in two sizes: 4.5 x 10 for homes up to 3 bathrooms and 4.5 x 20 for homes...- From $199.95
$333.25- From $199.95
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US Water Magna 4.5" x 20" 0.5 Micron Replacement Cartridge | 222 Seal
4.5" x 20" US Water Magna Cartridge 0.5 Micron - 222 Seal Features Magna Seal - It has a positive o-ring seal unlike flat top filters Compared to many other pleated filters on the market, it offers significantly more filtration surface area—typically 30-50% more—allowing...- $79.95
$133.25- $79.95
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US Water Pulsar Quantum Disinfection & GAC Cartridge for RO Systems
US Water Pulsar™ Quantum Disinfection™ & GAC Filter for Reverse Osmosis Systems The polishing filter on your RO is a carbon filter. What if it were a carbon filter that killed bacteria too? That's a game changer! This turns any Reverse Osmosis System into...- $49.95
$90.91- $49.95
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US Water Systems All American 6-stage R/O Filter Pack
Our 6-Stage Filter Pack is for the US Water Systems All American 6 stage reverse osmosis system and includes silicone to ensure a proper seal and extend the life of the o-rings, helping maintain optimal system performance. Fits the US Water Systems All American...- $199.95
$333.25- $199.95
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US Water Lead & Cyst Carbon Block Filter | USWCB-2510-LD
US Water Lead & Cyst Carbon Block Filter 2.5 inch x 10 inch - 0.5 Micron Filter Filter elements are designed to fit most standard 10” filter housings. This high quality carbon block media is manufactured from raw materials to precise specifications entirely in...- $19.95
$36.31- $19.95
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US Water 10 Inch Inline Carbon Filter
US Water 10 Inch In-line Granular Activated Carbon Filter Customers can rely upon this simple but dependable inline carbon filter for a variety of used including ice machines, water coolers, drinking fountains, as was as under-the-sink applications and as components in reverse osmosis systems....- $14.95
$27.21- $14.95
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H3500 Reverse Osmosis Filters
H3500 Reverse Osmosis Filter Pack US Water Systems offers quality USA manufactured compatible filters. Replacement Filter Pack that fits Hague® H3500 4-Stage Reverse Osmosis System All Filters are Made in the USA NSF Certified Replacements Includes (1) 5 Micron Pre-Filter (1) Carbon Block Pre-Filters...- $44.95
$81.81- $44.95
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US Water 2.5 x 20 Carbon Block Filter | USWCB-2520-10
US Water Carbon Block Filter 2.5 inch x 20 inch - 10 Micron Filter Filter elements are designed to fit most standard 20” filter housings. This high quality carbon block media is manufactured from raw materials to precise specifications entirely in a US manufacturing...- $19.95
$36.31- $19.95
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US Water Calcite Remineralization Cartridge - 2.5" x 9.75" | USWF-2510-PH
US Water Calcite Cartridge to Re-Mineralize Reverse Osmosis Water and Raise pH - 2.5” x 10 The US Water re-mineralization cartridge dissolves calcium carbonate into the water, which adds essential minerals for good taste and health and neutralizes the pH. This filter generally increases...- $13.95
$25.39- $13.95
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US Water 2.5" x 9.75" Pleated Filter Cartridge 5 Micron
2.5" x 9.75" 5 Micron US Water Polypropylene 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...- $13.95
$23.25- $13.95
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US Water Chloramine Carbon Block Filter | USWCB-2510-CL
US Water Chloramine Carbon Block Filter 2.5 inch x 10 inch - 1 Micron Filter Filter elements are designed to fit most standard 10” filter housings. This high quality carbon block media is manufactured from raw materials to precise specifications entirely in a US...- $34.95
$63.61- $34.95
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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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US Water Residential Membrane 35 GPD
US Water 35 Gallon Per Day Premium Reverse Osmosis TFC Membrane 11.75" x 1.75" 35 GPD Standard Size RO Membrane Works up to 25% longer than standard membranes with better rejection. Axeon has been making membranes for over twenty years and with their advanced...- $50.95
$63.69- $50.95
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US Water Filter Wrench for 4.5" Big Blue Housings
Filter Wrench for 4.5" x 10" and 20" Filter Housings Fits the Following: Flowmatic 5000 & 10000 Series Filter Housings Watts Big Blue Filter Housings Liquatec and Hydronix Filter Housings Pentek & Ametek Filter Housings- $6.95
$8.69- $6.95
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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.





