Patent ID: 8024239

Claim:
A method of using an investment instrument for investing in water, comprising: determining an index value of fresh water by using a computer processor to calculate the index value based on a quantity of said fresh water constituent in at least one product, based on a quantity of said fresh water utilized to produce said at least one product and based on a price of said at least one product; wherein the index value is computed by mathematically combining the quantity of said fresh water constituent in the at least one product, the quantity of said fresh water utilized to produce said at least one product and the price of said at least one product using one or more mathematical operations, determining a price of a financial instrument issuable for a particular amount of fresh water by using a computer processor to calculate the price from the index value of the fresh water and the particular amount of the fresh water; and issuing the financial instrument, the financial instrument identifying on its face the particular amount of fresh water.