1. Texas Water Development Board 2008 Water Use Survey Summary Estimates by City Five Largest Cities in Texas 1) July 1, 2008 Estimated Population (Source: Texas State Data Center). 2) An Acre - Foot is an amount of water to cover one acre with one foot of water and equals 325,851 gallons. Texas Water Development Board. (2010, December 11), Water Use Survey, Kevin Kluge – Team Leader. Partial statistics retrieved from the Texas Water Development Board website: http://www.twdb.state.tx.us/wrpi/wus/2008est/2008wus.asp City Population Estimates (1) Municipal Use in Acre-Feet (2) Gallons Consumed Annually Gallons Per Person Per Day (365 days) HOUSTON 2,215,947 333,329 108,615,587,979 134 SAN ANTONIO 1,348,539 225,301 73,414,556,151 149 DALLAS 1,268,533 302,087 98,435,351,037 212 AUSTIN 757,717 144,808 47,185,831,608 170 FORT WORTH 702,786 151,245 49,283,334,495 192

3. Plumbing Code and EPA WaterSense Label Comparison http://www.epa.gov/WaterSense/docs/faucet_suppstat_final508.pdf Plumbing Code WaterSense Water Closet 1.6 GPF 1.28 GPF Urinal 1.0 GPF .05 GPF Shower Head 2.5 GPM 2.0 GPM Metered Faucet 0.25 GPU 0.25 GPU Aerator 2.2 GPM 0.8 – 1.5 GPM