The overall impact of the Project is to enhance the urban environment, and improve public health, and quality of life for the urban and suburban residents and business in Wuhan City. The outcome of the Project is improved management of surface water resources in Wuhan Municipality by (i) improving and expanding wastewater services in the urban area of Wuhan and the suburban area of Caidian and Dongxihu; (ii) supporting integrated approaches to basin-wide pollution prevention and control, improving water quality of rivers and lakes in Wuhan and in downstream reaches of Yangtze river; (iii) reducing flooding in Qiaokouqu District and Yangsigang and Liujiao road storm water drainage areas in Wuhan; (iv) increasing the efficiency and management capacity of the two IAs; and (v) improving cost recovery through a better tariff structure, with gradual increases to achieve full cost recovery.
The Project includes 9 major activities grouped into 4 components or outputs; (i) municipal wastewater management in urban Wuhan; (ii) municipal wastewater management in suburban Wuhan; (iii) stormwater management; and (iv) institutional development involving targeted capacity building and training in wastewater and stormwater management. The Project supports the Government's 10th and 11th Five-Year Plans, to improve living conditions and health in the PRC cities, and promote their sustainable economic development.
|Project Rationale and Linkage to Country/Regional Strategy
Wuhan is strategically located at the confluence of the Yangtze and Han rivers, in central PRC. Wuhan has abundant water resources including many rivers and lakes which together take up about one-quarter of the urban and suburban areas.
Despite the abundant water resources, rapid economic growth and continuing urbanization over the last 25 years in Wuhan have resulted in inadequate urban infrastructure, and placed pressure on overloaded facilities. Water quality in Wuhan section of the Yangtze river has decreased significantly over the last 15 years mainly due to the wastewater discharge from the city. In 2004, about 2.0 million m3/day of wastewater was generated, but the four existing wastewater treatment plants (WWTPs) have capacity to treat only 26% of this quantity. Surface waters have been seriously polluted: 56% of the rivers and 89% of the lakes in Wuhan have been polluted. Accordingly, WMG is implementing the city's strategic wastewater master plan to meet national environmental targets and achieve a wastewater treatment rate of 80% by 2010. The wastewater master plan includes the phased and coordinated construction of WWTPs, and sewer networks using local funds, and assistance from ADB, World Bank, and bilateral sources. The ongoing ADB Wuhan Wastewater Management Project (WWMP), approved in 2003, together with other ongoing wastewater treatment projects will increase Wuhan's WWTP capacity to 70% of the wastewater generated by 2008. The proposed Project is not a stand alone investment, but is an integral part of the basin-wide Yangtze water resources management initiative, the Wuhan city urban development plan, the Wuhan wastewater master plan, and the Wuhan stormwater drainage master plan. The proposed Project will provide the critical required 10% capacity for the city to achieve its target of 80% of the wastewater generated by 2010.
The built-up areas in Wuhan are mostly below the average flood level of the Yangtze and Han rivers. Protected by flood control bunds, during wet seasons storm water is discharged to the rivers by pumping. Distinct seasonal variation and heavy summer rains place particular stress on Wuhan's urban drainage system, and combined sewer overflows also become major sources of water pollution. Aging and inadequately maintained drainage network and under capacity pumping stations result in frequent flooding in the urban area. Wuhan is served by a mixture of wastewater, strom water and combined sewer networks and its urban and suburban areas face a serious and growing deficit in insfrastructure, service and environment. WMG is accordingly planning a comprehensive urban drainage and flood control program through 2010.