Oman's Haya Water announced plans to invest $3.2bn (OMR1.25bn) in sewage projects, to develop a wastewater facility across Muscat governorate. 

Investments will be made to construct sewage pipelines, trunk lines, and sewage treatment plants in six catchment areas, which include Bausher, Al Amerat, Muttrah and Seeb.

Haya Water's master-plan aims to connect 80% of Muscat governorate's properties by the year 2020, Times of Oman reported. 

"In Bausher area, we have more than $789.8m (OMR304m) upcoming projects," Khalid Al Lawatia, deputy general manager for projects at Haya Water , said

He said the proposed investment for future projects in Seeb and Al Amerat catchment areas would be $519.6m (OMR200m) and $400m (OMR154m), respectively.

Al Lawatia said that the company faces multiple challenges, while implementing the mamooth project criss-crossing Muscat governorate.

These challenges include typical topography of Muscat, which include coastal areas, shallow areas and mountains, the report added. 

"We are using different methods and materials (to overcome the challenges)."

Limited availability of service corridors, non-availability of local contractors with relevant experience, and lack of accurate data are other major challenges.

Treating industrial and clinical wastewater is another challenge, while existence of old buildings is another problem faced by Haya Water .