Nepal 112 Environmental health 40 prevention & control 40 Health aspects 39 Environmental aspects 38 Pollution 38 Public Health 37 standards 37 Gezondheid 36 Quality Control 36 Water 36 Water Microbiology 36 Water Pollution 36 Water Supply 36 Water quality 36 Water quality management 36 Knowledge 28 Kathmandu 22 Children 14 Prevalence 14 Depression 13 Anxiety 12 COVID-19 12 Child Health 12 Disease Control 12 Stress 12 Family Control 11 Hypertension 10 Kathmandu Valley 9 Kathmandu valley 9