Management Water Pollution 6 Water quality 5 Dissertations 4 Dissertations, Academic 4 Water-supply 3 Water consumption 2 Aquatic organisms 1 Case studies 1 Economic conditions 1 Effect of water pollution on 1 Environmental aspects 1 Lakes 1 Land use 1 Perak 1 Refuse and refuse disposal 1 Tanjung Malim 1 Water conservation 1 Water quality management 1 supply 1