Doug+squared

http://www.prettygreatanswers.com/launch/21-07-2006How-does-a-water-purifier-work.htm. how a water purifier works

http://www.howstuffworks.com/question29.htm osmosis and reverse osmosis

http://answers.yahoo.com/question/index;_ylt=AjhX_C1IBN1mdfZ13rRajkQjzKIX;_ylv=3?qid=20070516165748AALRmL7 homemade water purifier. see second answer #4

http://www.wikihow.com/Purify-Water how to purify waterrr

http://www.doh.wa.gov/phepr/handbook/purify.htm purifying

https://www.nwp.usace.army.mil/HDC/edu_genexcit.asp genertor

http://re-energy.ca/t-i_waterbuild-2.shtml generator

[|Generator] [|HOMESTEAD HYDROPOWER] //At least 2 gallons per minute of flowing water, and a lot of drop; or 2 feet of drop and 500 gallons per minute of water flow. • A proper turbine, alternator and shelter from bad weather. • Permission from the relevant authorities, even if the project is entirely on your own land. • A water intake and enough pipeline or “penstock” to divert water to the turbine and return it to the stream. • A transmission line to move the power from the alternator to the point of use. • Batteries and a power inverter subsystem to convert the electricity to an alternating current (AC), and a controller for the electrical system.//