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.


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

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.

* Kinetico is the registered trademark of Kinetico, the manufacturer of Kinetico brand drinking water filtration equipment.  The replacement water filters and reverse osmosis membranes listed above are not manufactured or endorsed by Kinetico.  Rather, these replacement filters and RO membranes are manufactured by other companies.  While these filters and reverse osmosis membranes are compatible for use in Kinetico reverse osmosis water filtration equipment, we make no representation as to whether using these water filters and RO reverse osmosis membranes is consistent with the warranty and specifications applicable to Kinetico drinking water systems.