LDSprepper on youtube puts out some good vids. This one is very thorough for those that want a water system of this caliber.
http://www.youtube.com/watch?v=xC9iN_Kyico&feature=g-all-u
Excellent video. I know that everyone has their favorite water purification system but in my book you cannot beat the Berkey.
To save some money, buy your self an old coffee urn, (like the bottom half of the Berkley) and 2 Berkly Filters, a 5 gal food pail w/ lid.
Drill 2 hole in bottom of pail fit in filters and secure. Place pail over Cleaned Coffee urn, and there you have your Berkley water filter. 
"We 'Prep.' to live after a downfall, Not just to survive."
I bought and have been using a Berky system for a number of years now and noticed a difference in water taste the very first time I tried it. I am a huge fan and can’t see myself going back to anything else.
Noli Illigitimi Carborundum
(Don’t let the bastards wear you down)
For me its the life.straw (own three) and life bottle bit pricey but portable and invaluable in my books
For me its the life.straw (own three) and life bottle bit pricey but portable and invaluable in my books
Berkey makes portable versions as well. Guess it depends on preference.