2006 WATER USE FOR ARMORY PARK DEL SOL
by John Wesley Miller Companies
With Comparison to Civano, Sierra Morado and Tucson
EXECUTIVE SUMMARY
August, 2007
Prepared by Global Professional Services, Inc., September, 2007
Results
2006 Residential Utility Data Show
- Armory Park del Sol: 119 GPHD (gallons per house per day)
- Tucson: 247 GPHD
Graph 1. 2006 Water Use: Armory Park del Sol (2001 or newer homes) residential water use compared with Tucson (2001 or newer homes) by month (to see table, click here to download the full report)
Collective Water Savings
- Millions of gallons saved. Every day, these Armory Park del Sol homes use less than half the water resources that average Tucson homes (built 2001 or later) use. Multiplied by the life-span of the home--decades--water savings exceeds 1.4 million gallons for each home. Multiplied by 93 homes at build out, water savings for Armory Park del Sol numbers in the hundred millions when compared to 93 average Tucson homes measured across 30 years.
- Quantities saved through qualitative shifts. Graph 1 shows smart water use includes a qualitative shift: high summer peak water use is eliminated by concentrating storm water runoff on-site during project start up; small individual lots with inviting common areas; xeriscape and water harvesting; and conscious occupant behavior.
Tucson 2006 Water-use Comparison
Average Tucson use as compared to High-Efficiency Developments: Armory Park del Sol, Civano and Sierra Morado
Table 1. Water use in gallons per house per day (GPHD) (to see table, click here to download the full report)
GPHD indicates water use metered at individual residences (column 1). For occupancy in Developments, water used for exterior walkways, gardens, etc., i.e., the "common area", is typically not evaluated in residential water use studies (column 2). Total residential water use (column 3) is therefore higher than measured since common areas are typically metered and paid separately by the HOA as "commercial" water. Table 1 shows APdS total water use per residence, including common areas. While the most recent study did not calculate common area water use, the 2004 Civano water-use study (note 3) calculated common area water use totaling an additional 57 gallons of water per residence when common areas were included.
- Strategies to Reduce Water Use
- The Energy-Water Connection
- Development Wise Water Use
Study Reference
This report was prepared for John Wesley Miller Companies by GPS, Inc. All mistakes and omissions are the responsibility of GPS, Inc. Comments and inquiries can be directed to Cari Spring, Ph.D (www.carispring.com) at caspr@theriver.com or 520-260-9713.
Notes
- John Wesley Miller Companies would like to thank David Modeer and Tom Arnold of Tucson Water Company for evaluating Tucson residential water use and providing water data for Armory Park del Sol. Special thanks go to the residents of APdS who volunteer their utility data so that these studies are possible. GPS, Inc. would like to recognize ongoing discussions and collaboration with ANE, Inc. that deepen the context of analysis.
- Water utility data from April, 2006 and through March, 2007 are used in the Civano water studies by ANE, Inc. reported here in Table 1.
- The Civano water-use study released in 2007 (ANE, Inc.) did not assess common area water use, but that of 2004 (ANE, Inc.) reported 8,326 ccfs (6,227,848 gallons) of water used annually for Civano's common areas, with an expected build out of approximately 300 units at that time (ANE, Inc., personal communication; the report actually assessed the impact of 150 Civano homes). Translated into gallons per house per day, this totals an additional 57 GPHD in Civano residential water use calculations. Armory Park del Sol's common area water use for 2006 was 1,270 ccfs (949,960 gallons), with build out expected to be 93 homes. Tucson Water does not provide Development common area water use when providing residential water use data.
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