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Optimal Conjunctive Use of Groundwater and Recycled Wastewater

  • James Roumasset

    ()

    (University of Hawaii, Department of Economics
    University of Hawaii Econonmic Research Organization)

  • Christopher Wada

    ()

    (University of Hawaii Econonmic Research Organization)

Inasmuch as water demand is multifaceted, infrastructure planning should be part of a general specification of efficient quantities and qualities of water deliveries over time. Accordingly, we develop a two-sector dynamic optimization model to solve for the optimal trajectories of groundwater extraction and water recycling. For the case of spatially increasing costs, recycled water serves as an intermediate resource in transition to the desalination steady state. For constant unit recycling cost, recycled wastewater eventually supplies non-potable users as a sector-specific backstop, while desalination supplements household groundwater in the steady state. In both cases, recycling water increases welfare by shifting demand away from the aquifer, thus delaying implementation of costly desalination. Implementation of the model provides guidance on the appropriate timing and size of backstop and recycling infrastructure as well as water deliveries from the various sources to the water-demand sectors.

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File URL: http://www.economics.hawaii.edu/research/workingpapers/WP_10-13.pdf
File Function: First version, 2010
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Paper provided by University of Hawaii at Manoa, Department of Economics in its series Working Papers with number 201013.

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Length: 21 pages
Date of creation: 11 Aug 2010
Date of revision:
Handle: RePEc:hai:wpaper:201013
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  1. Phoebe Koundouri & Christina Christou, 2006. "Dynamic adaptation to resource scarcity and backstop availability: theory and application to groundwater ," Australian Journal of Agricultural and Resource Economics, Australian Agricultural and Resource Economics Society, vol. 50(2), pages 227-245, 06.
  2. Chakravorty, Ujjayant & Krulce, Darrell & Roumasset, James, 2005. "Specialization and non-renewable resources: Ricardo meets Ricardo," Journal of Economic Dynamics and Control, Elsevier, vol. 29(9), pages 1517-1545, September.
  3. Thomas Kaeo Duarte & Sittidaj Pongkijvorasi & James Roumasset & Daniel Amato & Kimberly Burnett, 2010. "Optimal Management of a Hawaiian Coastal Aquifer with Near-Shore Marine Ecological Interactions," Working Papers 201021, University of Hawaii at Manoa, Department of Economics.
  4. Huhtala, Anni, 1999. "Optimizing production technology choices: conventional production vs. recycling," Resource and Energy Economics, Elsevier, vol. 21(1), pages 1-18, January.
  5. Chakravorty, Ujjayant & Umetsu, Chieko, 2003. "Basinwide water management: a spatial model," Journal of Environmental Economics and Management, Elsevier, vol. 45(1), pages 1-23, January.
  6. Majah-Leah Ravago & James Roumasset, 2009. "Economic Policy for Sustainable Growth and Development vs. Greedy Growth and Preservationism," Working Papers 200909, University of Hawaii at Manoa, Department of Economics.
  7. Stavins, Robert & Wagner, Alexander & Wagner, Gernot, 2002. "Interpreting Sustainability in Economic Terms: Dynamic Efficiency Plus Intergenerational Equity," Working Paper Series rwp02-018, Harvard University, John F. Kennedy School of Government.
  8. Chakravorty, Ujjayant & Roumasset, James & Tse, Kinping, 1997. "Endogenous Substitution among Energy Resources and Global Warming," Journal of Political Economy, University of Chicago Press, vol. 105(6), pages 1201-34, December.
  9. Klaus Conrad, 1999. "Resource and Waste Taxation in the Theory of the Firm with Recycling Activities," Environmental & Resource Economics, European Association of Environmental and Resource Economists, vol. 14(2), pages 217-242, September.
  10. Costello, Christopher & Polasky, Stephen, 2008. "Optimal harvesting of stochastic spatial resources," Journal of Environmental Economics and Management, Elsevier, vol. 56(1), pages 1-18, July.
  11. Darrell Krulce & James A. Roumasset & Tom Wilson, 1997. "Optimal Management of a Renewable and Replaceable Resource: The Case of Coastal Groundwater," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 79(4), pages 1218-1228.
  12. Richard Horan & James Shortle, 1999. "Optimal Management of Multiple Renewable Resource Stocks: An Application to Minke Whales," Environmental & Resource Economics, European Association of Environmental and Resource Economists, vol. 13(4), pages 435-458, June.
  13. Brozovic, Nicholas & Sunding, David L. & Zilberman, David, 2006. "On the spatial nature of the groundwater pumping externality," 2006 Annual meeting, July 23-26, Long Beach, CA 21035, American Agricultural Economics Association (New Name 2008: Agricultural and Applied Economics Association).
  14. Pitafi, Basharat A.K. & Roumasset, James A., 2004. "Pareto-Improving Water Management Over Space And Time," 2004 Annual meeting, August 1-4, Denver, CO 20022, American Agricultural Economics Association (New Name 2008: Agricultural and Applied Economics Association).
  15. CHAKRAVORTY Ujjayant & MOREAUX Michel & TIDBALL Mabel, 2006. "Ordering the Extraction of Polluting Nonrenewable Resources," LERNA Working Papers 06.19.212, LERNA, University of Toulouse.
  16. Gerard Gaudet & Michel Moreaux & Stephen W. Salant, 2001. "Intertemporal Depletion of Resource Sites by Spatially Distributed Users," American Economic Review, American Economic Association, vol. 91(4), pages 1149-1159, September.
  17. Chakravorty, Ujjayant & Krulce, Darrell L, 1994. "Heterogeneous Demand and Order of Resource Extraction," Econometrica, Econometric Society, vol. 62(6), pages 1445-52, November.
  18. Naomi Zeitouni & Ariel Dinar, 1997. "Mitigating negative water quality and quality externalities by joint mangement of adjacent aquifers," Environmental & Resource Economics, European Association of Environmental and Resource Economists, vol. 9(1), pages 1-20, January.
  19. Basharat A. Pitafi & James A. Roumasset, 2009. "Pareto-Improving Water Management over Space and Time: The Honolulu Case," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 91(1), pages 138-153.
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