Nepal 108 Knowledge 65 Kathmandu 38 Environmental aspects 36 Environmental health 36 Gezondheid 36 Health aspects 36 Pollution 36 Public Health 36 Quality Control 36 Water 36 Water Microbiology 36 Water Pollution 36 Water Supply 36 Water quality 36 Water quality management 36 prevention & control 36 standards 36 Prevalence 25 Children 21 Depression 19 Hypertension 14 HIV/AIDS 12 Mothers 12 Women 12 Anxiety 11 Awareness 11 Practice 11 Attitude 10 Educational intervention 10