Food waste (IME) likewise estimated that 30–50% (or ) of all food produced remains uneaten. In Singapore, of food was wasted in 2014. Of that, were recycled. Since Singapore has limited agriculture ability, the country spent about S$14.8 billion (US$10.6 billion) on importing food in 2014. US$1.4 billion of it ends up being wasted, or 13 percent. In the UK, per year of wasted food (purchased and edible food which is discarded) amounts to a cost of £10.2 billion each year. This represents costs of £250 to £400 a year per household. Estimates of food waste in the United States range from
Waste management the construction industry. Many inorganic waste streams can be used to produce materials for construction. Concrete and bricks can be recycled as artificial gravel. This topic was on the agenda of the International WASCON conference in Spain in June 2015 and on the international Conference on Green Urbanism, held in Italy 12–14 October 2016. Sewage sludge is produced by waste water treatment processes. Due to rapid urbanization, there has been an increase in municipal waste water that results 0.1–30.8 kg of sewage per population equivalent per year (kg/p.e/year). Common disposal practices of sewage sludge are incineration, composting, and landfill. An