Unsafe Sanitation
Global death rates attributable to unsafe sanitation, country rankings, and trends from 1990 to 2023.
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This page presents age-standardized death rates attributable to unsafe sanitation across 204 countries and territories, drawing on data from the IHME Global Burden of Disease Study 2024. Unsafe Sanitation mortality patterns vary considerably by geography, income level, and access to healthcare services. Understanding the epidemiology and population-level burden of unsafe sanitation is critical for global public health policy, disease prevention strategies, and healthcare resource allocation.
The trend chart above shows how the global unsafe sanitation rate has evolved since 1990, reflecting changes in risk factor prevalence, diagnostic capacity, treatment availability, and demographic transitions. Country rankings provide a comparative view of the current burden, highlighting disparities between high-income and low-income nations in unsafe sanitation outcomes.
Unsafe sanitation — the absence of facilities that hygienically separate human excreta from human contact — is responsible for approximately 775,000 deaths annually through faecal contamination of water, food, soil, and living environments. Open defecation, unimproved latrines, and poorly maintained sewerage systems facilitate transmission of diarrheal pathogens, soil-transmitted helminths (hookworm, roundworm, whipworm), schistosomiasis, trachoma, and poliomyelitis. As of 2022, an estimated 3.5 billion people lacked safely managed sanitation services, with approximately 420 million still practising open defecation — predominantly in sub-Saharan Africa and South Asia. India, despite dramatic progress through the Swachh Bharat Mission, and sub-Saharan African nations face the greatest remaining challenges. The health impacts extend beyond infectious disease: exposure to faecal contamination in early childhood triggers environmental enteric dysfunction, a subclinical condition of chronic gut inflammation that impairs nutrient absorption and contributes to stunting in an estimated 25-40% of children in heavily affected areas. Women and girls face additional burdens from inadequate sanitation, including menstrual hygiene challenges, vulnerability to gender-based violence during open defecation, and lost educational opportunity.
Sanitation improvement requires sustained investment in sewerage and wastewater treatment infrastructure alongside community-led total sanitation (CLTS) programmes that use social mobilisation to eliminate open defecation. The sanitation value chain — from toilet construction through faecal sludge management to wastewater treatment and resource recovery — must be addressed holistically. SDG Target 6.2 calls for universal access to adequate and equitable sanitation and hygiene by 2030 and an end to open defecation. Market-based approaches that make improved sanitation desirable and affordable have shown success in several African and Asian contexts.