Water quality 39 Public Health 37 Environmental aspects 36 Environmental health 36 Gezondheid 36 Health aspects 36 Pollution 36 Quality Control 36 Water 36 Water Microbiology 36 Water Pollution 36 Water Supply 36 Water quality management 36 prevention & control 36 standards 36 Quality of life 13 Nepal 11 Quality control 8 World Health Organization 7 Client satisfaction 3 Depression 3 Environmental exposure 3 Guidelines 3 Information systems 3 Kathmandu 3 Quality 3 Quality of Life 3 Series 3 Water pollution 3 Agriculture - standards 2