The design-build contract for Doha West is worth USD 180 million and the plant operation contract totals USD 80 million, for a total amount of USD 260 million, awarded by the Public Works Authority in 2006.This is a 135,000 m3/day wastewater facility, the first in the Middle East to use tertiary treatment with ultra filtration membranes. All the treated water will be used for farm irrigation after the commissioning late 2008.