The built environment has a profound impact on our natural environment, economy, health, and productivity.
In the United States alone, buildings account for:
70% of electricity consumption,
39% of energy use,
39% of all carbon dioxide (CO2) emissions,
40% of raw materials use,
30% of waste output (136 million tons annually), and
12% of potable water consumption.
Additionally, the structures in which we reside and work may be having an enormous, deleterious effect on our health and natural resources:
The Environmental Protection Agency (EPA) ranks indoor air pollution among the Top Five environmental risks. Unhealthy air is found in up to 30% of new and renovated buildings.
The World Health Organization reports that indoor air pollution causes 14 times more deaths than outdoor air pollution (2.8 million lives).
Of hundreds of EPA-regulated chemicals, only ozone and sulfur dioxide are more prevalent outdoor than indoors.
Older toilets use 3.7-7 gallons per flush
Dishwashers use 8-14 gallons per cycle
Top-loading washers use 45 gallons/load
A dripping faucet waste 15-21 gallons per day
An estimated 7 million Americans are made sick annually by contaminated tap water; in some rare cases resulting in death.