Sewage Treatment Plant at Samail	Min. of Regional Municipalities	Khatib & Alami	1998
Sewage Treatment Plant at Nizwa	Min. of Regional Municipalities	Khatib & Alami	1998
Sewage Treatment Plant at Rustaq	Ministry of Regional Municipalities & Environment and Water Resources	Asie Etudes	2005
Upgradation of STP & Associates works at Masirah	Ministry of Regional Municipalities & Environment and Water Resources	Consulting Engineering Services	2007