Al Ansab Sewage Treatment Plant
Wastewater treatment (MBR), 125,000 m3/day today; phase III adds about 82,000 m3/day to reach about 207,000 m3/day in Oman.
Operational
The record
- Country
- Oman
- Location
- Muscat
- Coordinates
- 23.580, 58.250
- Technology
- Wastewater treatment (MBR)
- Capacity
- 125,000 m3/day today; phase III adds about 82,000 m3/day to reach about 207,000 m3/day
- Capital cost
- —
- Stage
- Operational
- Owner or client
- Oman Wastewater Services Company (Haya Water)
- Contractor
- ACWA / Kubota
- Operator
- Haya Water
- Finance
- Government
- Award or start year
- 2010
- Commissioned
- 2010
Record last checked 2026-09-18.
History
- 2010
First phase enters operation at 57,300 m3/day using Kubota MBR
- 2018-10
Phase 2 expansion completed, raising capacity to 125,000 m3/day
Sources
6 references
Every field in the record above is taken from the references below. A field that none of them confirms prints as a dash.
- Gulf Construction, Haya completes second phase of Oman STP, 1 September 2018. gulfconstructiononline.com.
- Oman Observer, RO 207 million wastewater projects under way in Muscat, 12 December 2018. omanobserver.om.
- Kubota, The imperative need to recycle limited water resources. kubota.com.
- DMS Universe, Haya Water expansion of Al Ansab STP phase 2. dmsuniverse.com.
- Nama Water Services, Request for Qualification: Strategic PPP Project for the Development and Operation of Sewage Treatment Plants (applications due 16 December 2025). nws.nama.om.
- MENA Water Review major projects register and PPP pipeline — compiled from procurer publications, development-bank project pages and trade reporting; each record names its source.
puts Al Ansab phase III at about 82,000 m3/day of new capacity, taking the plant from 125,000 to about 207,000 m3/day, tendered together with Al Amerat phase II.