However, as incomes increase, the amount of waste increases. Waste from high-income countries is less dense from more packaging and lighter materials being discarded, and has less food waste. Impacts Many current problems with waste have resulted from increased urban populations . Problems are often exacerbated because of limited resources and low professional status of waste workers. Failure of an effective approach results in wastes dumped along roads, riverbanks, abandoned quarries, with the inevitable effect of contaminating water supplies as well as the whole aquatic chain .
Animals grazing on dumps can pass on diseases via the food chain .
People living near dumps are also at risk. Air pollution is another factor to be considered. An integrated strategy on waste management is the fundamental goal for collection and disposal . The focus should be on collection in low income and high density areas. The least technically complex and most cost-effective solution should be chosen.