Nepal 90 Water quality 38 Environmental health 37 Public Health 37 Environmental aspects 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 Knowledge 25 Kathmandu 22 Prevalence 19 Depression 18 Anxiety 12 Hypertension 10 Stress 10 Mothers 8 Women 8 Children 7 Kathmandu Valley 7 Quality of life 7 Elderly people 6 Risk factors 6