HEAT
http://www.richsoil.com/rocket-stove-mass-heater.jsp
http://www.heatmasterss.com/
Water, cisterns are good for toilets and laundry, bacteria can build up. Wells learn how to chlorinate them properly, and learn the recovery rate and how much flow the system can accomodate.
Septic - DO NOT DRIVE OVER IT! Be careful what you put down it, no feminine hygiene products, no grease, no chemicals. Does not hurt to use Septal -http://www.septal.com/, some areas you have to get it pumped every 2 years mine seems to be 10, and my moms is 20. It does not hurt to have someone that knows what they are doing pressure wash the lines, PROS ONLY!