Selected project examples

Wastewater recycling in the City of Riyadh, Saudi Arabia

Wastewater recycling in the City of Riyadh, Saudi Arabia

Due to the huge growth of the Saudi Arabian capital, fresh water resources have become scarce. Fichtner has therefore been awarded a contract to prepare a master plan for the City of Riyadh with the aim of ensuring an effective and sustainable use of treated effluent and other sources of reclaimed water. Investigations were underway for reuse of this water primarily for agriculture, but for other purposes, too, like in industry or for irrigating greened areas. Also being studied was how groundwater reserves can be recharged with the treated wastewater.

Our services

  • Economic and financial analyses; socio-economic studies
  • Subsoil investigations
  • Data collection and analysis
  • Hydrogeological studies and hydraulic investigations
  • Preparing a master plan
  • Pre-feasibility study and preliminary design

Technical data

  • Available treated sewage effluent: 1,750,000 m³/day by 2024
  • Present drinking water supply: 1.4 million m³/day
  • Length of main lines (DN 2,200 to 2,500 mm): 185 km
  • Length of secondary lines: (DN 600 to 1,000 mm): 203 km


Arriyadh Development Authority, Arriyadh, Saudi Arabia