16 Mar 2012

Bleg: Statistics for water inputs to final products?

TS wanted to do a "silicon chip to potato chip" comparison of the output value per unit of water.

I cautioned him that we cannot just divide the TOTAL value of final products by the amount of water consumed. We need to measure the MARGINAL value of water to the output, i.e., removing the effects of other inputs, labor, capital, etc.

Does anyone know of statistics that quantify the value added from water across many industries or products?