Fresh water is rare, of all the water on the earth, 97% is salt water. Only 3% is fresh, of that 75% is frozen, leaving 14% available for recharge and 11% greater depth of 800meters that takes 10000 years to recharge. Water to drink is now valued as equal or greater to oil or gas.We will be harvesting rain from most every roof in this century. In Permaculture we consider water and fire design elements important in every location.
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