2006 Water Comprehensive Plan - City of Bellevue

Figure 5-1Single Family Water Use Per Housing UnitAnnual and Baseline350300250282291267307268254220258251244233248239246234 231Baseline = 283247 243Demand (gpd)20015020210050--1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004Annual Baseline (1986-1990)Note: The decreased demand in 1992 was the result of drought related mandatory watering restrictions. Thedecreased demand in 1993 was due to an unusually wet summer and rollover effects from the 1992 drought.For the multifamily sector, Figure 5-2 compares the water use per housing unit for each yearto the baseline number of 152 gpd. The most recent 3-year average (114 gpd) reflects a 25%reduction compared to the baseline period.Figure 5-2Multifamily Water Use Per Housing UnitAnnual and Baseline200187180Baseline = 152Demand (gpd)16014012010080156148131137 137121125132142 143128122129123116112 113117604020--1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004Annual Baseline (1986-1990)Note: The decreased demand in 1992 was the result of drought related mandatory watering restrictions. Thedecreased demand in 1993 was due to an unusually wet summer and rollover effects from the 1992 drought.5-17