The project also includes three regional schemes for treatment and disposal of sewage for three associations of towns -the Greater Dan Region (comprising the Metropolitan Area of Tel Aviv and its eight satellite towns), the Greater Haifa Region, and the Ayalon Region, which together have a total present population of some 1.5 million. The plans provide for the construction of sewerage facilities adequate to meet needs up to the year 1985, and outline needs up to the year 2000.

Project plans provide for the reuse of sewage water after secondary treatment for irrigation, wherever feasible, both as a means of disposal and for boosting the country's meagre water resources, while also ensuring minimization of pollution of streams, bathing beaches and recreational areas and, in particular, elimination of pollution of the groundwater aquifer, Israel's principal source of domestic water supply. Under this scheme, it is proposed to increase reuse of sewage from the present 30 MCM/year to 120 MCM/year by 1985.

The Consultants also undertook the financial, organizational and economic analyses of the project. In this context, detailed financial plans for the five year implementation programme were prepared and the legal and institutional framework for project implementation and credit disbursement by the IBRD was drawn up.

As Project Engineer, TAHAL is responsible for the following:

• Issue or approval of design criteria and monitoring of design procedures Technical approval of design and engineering estimates before issuing of tenders