The waste collection rate in rural areas is even lower and often unorganized. Most collected waste (68 per cent) is sent untreated to illegal dumpsites. There is an informal recycling sector, in which valuable waste items are recovered by waste pickers at the landfill sites. Informal recycling is practised in precarious conditions by approximately 15,000 waste pickers. The most recycled types of waste are paper, metals, plastics and glass. The estimated quantity of recycled waste is given in table 8.2.