http://www.americanhomewater.com/
Check out the prices from American Home. They have been installing water conditioning systems including Reverse Osmosis and Water Softeners in the Phoenix Arizona metro area since 1985.
http://www.frontrunnercpc.com/info/classes.htm
Web sites for academic classes on computer performance. Typical contents include syllabi, readings, homework, and lecture notes. Useful to students, instructors and practitioners who want to review the basics.
