According to a national survey carried out in 2006, 84% of the urban population and 32% of the rural population had access to an improved water source. Those with access in rural areas were served almost exclusively by protected wells. The 68% of the rural population without access to an improved water source relied on surface water (50%), unprotected wells (9%) and unprotected springs (9%). Only 20% of the urban population and 1% of the rural population had access to piped drinking water in their home. Compared to the 2000 survey access has increased in urban areas, but has declined in rural areas, possibly because facilities have broken down because of a lack of maintenance.