The costs of rebuilding our nation’s water infrastructure are jaw dropping: estimates range from $300 billion to $1 trillion needed over the next 30 years. Add in the cost to develop new water supplies, treatment plants and transmission systems to accommodate growth—$20 billion for new reservoirs and pipelines in North Texas, $7 billion for a pipeline in Las Vegas—and the numbers really start to make the mind reel.
More efficient use of water will have to part of the solution. In the U.S., around one-third of the clean drinking water we treat each day is used to water lawns. This proportion is as high as 70 perecent in some areas. Energy prices are rising, and with it, the cost of treating and moving that water.