On April 29, Singapore's Deep Tunnel Sewerage System (DTSS) received the Water Project of the Year award, one of the most prestigious symbols of achievement in the water industry, at the Global Water Awards 2009 in Zurich. It is the second international award for DTSS, which topped the Planning Projects category at the International Water Association Project Innovation Awards last year. Forty-eight kilometers (30 miles) long, the tunnel runs 20 to 55 meters, or 65 to 180 feet, underground, using gravity to carry used water from homes and industries to a centralized water reclamation plant. Singapore has invested 3.65 billion Singapore dollars ($1.54 billion) in the project, conceived and designed to fulfill the island's used-water needs for the next 100 years. At the heart of the DTSS is the Changi Water Reclamation Plant, to be officially opened on June 23. At maximum capacity, the state-of-the-art plant is capable of treating 800,000 cubic meters (176 million gallons) of used water each day to international standards. The compact design of the CWRP has not only resulted in land savings for land-scarce Singapore, it also ensures the sustainability of NE Water, Singapore's own brand of high-grade reclaimed water. The plant will provide feedstock for the NE Water Plant, located on its roof. Key to Singapore's ambitious water infrastructure drive is a critical piece of vanguard technology