Why 123filter?
We all know that clean water is essential for living. 3.575 million people die each year from water-related disease. 123filter is a Georgia based water filter systems outlet. Since year 2005, we have shipped tens of thousands of water filters. Majority of the industry's water filter systems, including the brand names such as Culligan, Ametek, Pentek, American Plumber, Watts, GE, and USFilter, are made by a handful of manufacturers. Our OEM manufacturers are among them. The idea is to carry the products that bear the quality of brand names but with no brand cost. We got this direct channel to help make clean water more available, reliable and affortable. We believe that our success is built on the consistant value that we can bring to you.
To save you money for the long run, most systems we choose use standard (not proprietary) cartridges. The search box can help you find products that are interchangeable with expensive brand-name systems.
123filter will donate 5% of earnings to help provide clean water for children.
As what our name suggests, we wish in one day having clean water is as simple and affortable as 123. Thank you for choosing 123filter!
Installation Video Wanted

Whoever purchased iSpring water filter system may share the Installation Video to help others. Please video your plumber's or your DIY insallation process, upload it to youtube, and email the link to sales@ispringfilter.com, or contact us on how to upload. It will be rewarded with 1 - 3 years supply of replacement filter cartridge. Thank you.
What customers said about our products
How to choose a Water Filter
iSpring Reverse Osmosis Manual (new version 03/2012)
How-to install Reverse Osmosis filter. It is as simple as 123.
How-to clean Reverse Osmosis filter
How-to change Reverse Osmosis filter
Drugs In Our Drinking Water CBS Report
Theory of Reverse Osmosis
Reverse Osmosis overview part 1
Reverse Osmosis overview part 2
Diagram of a 5-stage Reverse Osmosis Water Filter (with UV/DI/ALK post filter added)