management process, the reaults achieved so far have been sufficient to demonstrate the importarce of policies designed to foster these approaches. However , the post-Decade period will require an acceleration of such programmes aimed at achieving the widest replications of successful approaches. 84. The 1990s will require an intensification of efforts to provide the unserved with water and sanitation services by the end of the century. The recommendations contained in the Mar de1 Plats Action Plan, continue to be valid, as do those contained in subsequent deliberations of the General Assembly and other international forums, and their implementation has acquired a greater sense of urgency, particularly with regard to the provision of services to rapidly growing urban populations. Within this framework, any strategy for the accelerated expansion of services in the 1990s must be based on the establishment of realistic targets by Governments in terms of the level of service coverage to be achieved, and on the formulation of sustainable social and economic plans. 85. The expected high rates of population growth will continue to put severe pressure on the ability of developing countries to provide water supply and sanitation services to the unserved. In the long run it is to be hoped that policies in support of population and family planning will tend to alleviate such pressures. 66. The Mar de1 Plate Action Plan states that institutional arrangements adopted by each country should ensure that the development and management of water resources take place in the context of national planning, and that there is real co-ordination among all bodies responsible for the investigation, development and management of water resources. The problem of creating an adequate institutional infrastructure should be kept constantly under review and consideration should be given to the establishment of efficient water authorities to provide for proper
**Analysis**
The text discusses the importance of providing water and sanitation services to the unserved, particularly in developing countries. It emphasizes the need for realistic targets, sustainable social and economic plans, and institutional arrangements to ensure effective management of water resources. The text also touches on population growth and its impact on the provision of water and sanitation services. Given the focus on providing basic services to people, it is likely that the text belongs to a category related to human development.

**Category**
Natural resources and environment, Humanitarian aid and relief