(December/Kobayashi Comment: This trend is also seen in Hawaii although Hawaii’s population growth will likely erode this decline in the future.)
By Brett Walton, Circle of Blue:
Continuing a trend that began in the early 1990s with tighter federal plumbing standards, U.S. household water use dropped again in 2015.
When assessing national figures, there are two main ways to gauge water use at home: the amount used per person and total water use, which incorporates changes in population. By both measures, water use is declining, according to the latest report from the U.S. Geological Survey, the agency that gathers national data every five years.
For people served by public and private utilities, water use for cooking, drinking, showering, lawn watering, car washing, and other household tasks dropped to an average of 83 gallons per person per day in 2015, down seven percent compared to 2010. Household use was 105 gallons per person per day in 1990.
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