Presentation on theme: "Status and trends in water use in the southeastern United States Alabama AWRA October 12, 2005 Susan S. Hutson USGS University of Memphis Hsiang-Te Kung,"— Presentation transcript:
Status and trends in water use in the southeastern United States Alabama AWRA October 12, 2005 Susan S. Hutson USGS University of Memphis Hsiang-Te Kung, Ph.D. Professor Esra Ozdenerol, Ph.D. Asst. Prof. Jungyul Sohn, Ph.D, Asst. Prof.
Southeastern United States Total water withdrawals by source
Water withdrawals by quality of water 1960 to 2000
How water is used in the Southeast
Water availability, water use, and demographic and socioeconomic indicators Thermoelectric power sector Hydro and thermo power accounted for 67 percent of electricity generated by TVA in 2000 The importance is greater than the income from the power sales Electricity served as a base for the economy of the region that was valued at $246b for goods and services
Total water withdrawals excluding thermoelectric power 1960 to 2000
SE public supply WU Increased PS withdrawals 230% Increased population 89 % Increase population served 134 % Increased gross per capita use gallons per person per day gallons per person per day
Effect of changing demographics on public-supply withdrawals
Demographics and water use 2000 Census Ranked by population size FL 4 GA10 NC11 VA12 TN16 AL23 KY25 SC 26 MS31
Demographics and water use 2025 projections Total net increase SE 17.5 million Largest projected net increase CA million TX2 8.5 FL3 6.5 GA4 2.7 NC7 2.2 VA8 1.8 TN13 1.4
Population projections: States, U.S. Census Bureau Fastest-growing population by % CA1 56% FL946% GA1537% NC16 30% VA18 28% TN19 27% SC20 26% U.S.28%
Demographics and public-supply water use U.S. Census Bureau In 1950, the U.S. population became predominantly metropolitan and became increasingly metropolitan in each subsequent decade This increasingly concentrated population received its drinking water from public supplies. Population served by public supplies expanded, increasing from 58 to 81 percent of the population.
Demographics and public-supply water use U.S. Census Bureau Since 1990, more than half of the U.S. population has lived in metropolitan areas of at least 1 million people. In 2002, public supply systems serving more than 100,000 people served more than 30 percent of the population
Demographics and public-supply water use U.S. Census Bureau Most of the growth occurred in the suburbs, with little change in the percentage of population living in central cities. As a result systems expanded lines to meet the new demand or to meet the demand for publicly supplied instead of self-supplied drinking water.
Demographic implications for Public Supply Increased demand in large areas of concentrated population may strain local water availability Hydrology--more distant source alternatives Legal--question of who has a right to the more distant sources Increased cost/rates by the larger systems to meet more stringent USEPA requirements Engineering--granulated activated carbon filtration
Changing face of industrial water use in the Southeast Traditional manufacturing— large users of self- supplied water Chemicals Pulp and paper Primary metals Food processing
Changing face of industrial water use in the Southeast Modern manufacturing— modest users of publicly-supplied water Transportation equipment Computer & electronic products Machinery manufacture
Status of data collection Industrial water use USGS Data model for 2000 Self-supplied withdrawals only emphasized the impact on the water resource--withdrawals Data model from 1960 to 1995 Self-supplied withdrawals Publicly- supplied deliveries
Industrial water use
Summary Industrial freshwater use 1995 ALFLGAKYMSNCSCTNVA % self self public
Manufacturing and industrial water use Manufacturing employees 2000 SE 3.8m MI&OH 1.9m 2005 SE 3.1m MI&OH 1.5m Manufacturing firms SE69,241 MI & OH34,257
Industrial water use--Southeast State Manu contribution to real GSP growth in % Motor vehicles contribution to real growth in manufacturing in % AL169.1 FL510.8 GA KY MS NC SC TN VA127.5
s-s industrial water use-2000 Georgia Industrygw Mgal/dsw Mgal/dPercent of total Contribution to real GSP Mining Food Textiles Paper Chemicals Petroleum.310>110.3 Rubber 1.470>110.8 Stone, clay Primary metals.790>12.1 Elec mach 16.2
Industrial growth and water use in the southeastern region Status of USGS water-use data collection Site-specific data Self-supplied industrial Thermoelectric power public supply Not public supply deliveries Benefits of the data
Framing the inevitable question Will there be sufficient water resources to sustain economic growth and the quality of life?