Large selection of replacement water filters, reverse osmosis membranes, testing kits and water filter system repair parts. From one water filter or membrane to case quantity discounts.

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99.5% Of All Items In Stock For Same Day Shipping!

Water-Safe Water Filters ®

Water-Safe ® compatible replacement water filter cartridges, RO reverse osmosis membranes, DIY Replacement Parts and Servicing HELP Guides.

Be sure to check our Parts Department for important parts such as TDS Testers For Reverse Osmosis Membranes, Replacement Tanks, O-rings , Filter Housing Wrenches, Faucets, Pumps, Fittings, UV Systems and more parts for your reverse osmosis pure water filtration system.   View maintenance and servicing tips online at our Installation & Trouble shooting Guide.





* Water-Safe ® is the registered trademark of Water-Safe , the manufacturer of Water-Safe ® brand water treatment equipment.  The replacement filters and membranes listed above are not manufactured or endorsed by Water-Safe .  Rather, these filters and membranes are manufactured by other companies.  While these filters and membranes are compatible for use in Water-Safe ® brand water treatment equipment, we make no representation as to whether using these filters and membranes is consistent with the warranty and specifications applicable to Water-Safe ® equipment.