The efficient management of water supply becomes even more important in arid areas where supply is at best erratic. This book looks at a range of issues connected to urban and agricultural water use in the Sana'a Plain area, including engineering and logisical problems, environmental and climatic influences on groundwater, legal and political wrangles, economic considerations and options for waste water re-use. | Competition For Scarce Groundwater In The Sana'a Plain Yemen. A Study Of The Incentive Systems For Urban And Agricultural Water Use