Managed aquifer recharge using quaternary-treated wastewater: an economic perspective

Slim Zekri*, Mushtaque Ahmed, Randa Chaieb, Noreddine Ghaffour

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)


An excess of 31 million m3/y of tertiary-treated wastewater is expected in Muscat, Oman, by 2015. This paper addresses the technical and cost estimation of managed aquifer recharge after reverse-osmosis treatment. The results indicate that the project is appealing from an economic perspective. The total cost varies between USD 0.353 and USD 0.550 per cubic metre, depending on the cost of electricity, the interest rate and the life span of the project. The project may face rejection from domestic users, who may be unwilling to accept mixing treated wastewater with the current water supply due to health risks. An alternative to indirect potable reuse is the installation of a separate network to service industrial users.

Original languageEnglish
Pages (from-to)246-261
Number of pages16
JournalInternational Journal of Water Resources Development
Issue number2
Publication statusPublished - Apr 2014


  • Oman
  • capital cost
  • managed aquifer recharge
  • operating and maintenance cost
  • reverse osmosis
  • treated wastewater

ASJC Scopus subject areas

  • Development
  • Water Science and Technology


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