What country has the worst littering problem?

What country has the worst littering problem is subjective and depends on measurement like mismanaged waste, plastic leakage, and visible litter, but several countries are frequently cited for significant littering challenges due to population, waste management infrastructure, and consumption patterns. According to studies on mismanaged plastic waste and ocean plastic leakage, countries with largest littering problems include China, India, Indonesia, Philippines, and Vietnam, which contribute large amounts of plastic waste to environment due to rapid urbanization and inadequate waste collection. For visible street litter and waste management, countries like India and Indonesia face major challenges with open dumping and litter. In terms of per capita littering behavior surveys, some reports cite United States as large generator of waste overall, though with better collection. For ocean litter, Philippines has been ranked high due to river pollution. For worst littering problem in terms of environmental impact, India and China are often cited due to sheer volume of waste generated and mismanaged. However, many developed countries also have littering issues in urban areas. Cleanliness rankings like EPI show countries with lowest scores include India, Pakistan, and some African nations for waste management, indicating worst littering and pollution problems.