The Oman Wastewater Services Company (Haya Water) is planning to invest RO1.7bn ($4.4bn) on new water reuse projects by 2025 as part of its plans to connect 93.1 per cent connection rate for residents of the Muscat governorate.

The investment is part of the Haya’s overall RO2.14bn investment programme to expand Muscat’s sewerage network. The expenditure plans were revealed by Said al-Asmi, Haya’s general manager, at MEED’s Oman Projects Forum in Muscat in late October.

The company has the mandate to build, own and operate the Muscat wastewater project under a 30-year concession, which started on 1 January 2006. Its responsibilities involve wastewater collection, treatment and treated sewage effluent (TSE) distribution across the governorate’s six provinces – Muttrah, Bausher, Seeb, Al-Amerat, Quriyat and Muscat.

In August, Haya received bids for the contract to design and build sea outfalls for the new Darsait sewage treatment plant and Auzaibah central pumping station.

Haya Water received bids from five companies. The bidders are:

  • Combined Group Contracting Company (CGCC)
  • Hani Archirodon
  • Sezai Turkes (Turkey)
  • Tecnicas Reunidas (Spain)
  • Towell Infrastructure Projects (local)

Haya Water awarded the RO37m ($96m) contract to build the 50,000 cubic-metre-a-day (cm/d) Darsait sewage treatment plant to a consortium of Spain’s Cadagua and the local Galfar Engineering & Contracting in January 2011.

The Darsait catchment covers the areas of Al-Bustan, Aynt, Bait al-Falaj, Darsait, coastal Darsait, Hamriya, Muscat, Muttrah, Ruwi, Sidab and Wadi Kabir.