Lake Managua only in 2009 that a modern wastewater treatment plant (built and operated by the British company Biwater) was opened in Managua, but even it treats only 40% of the city's wastewater. The lake today has no stable outlet, with only occasional floods to Lake Nicaragua through the Tipitapa River. Pollutants are thus concentrated. Despite the pollution, some of the people of Managua still live along the lake's shores and eat the fish. In 2007 the "malecón" area was dredged and the sediment hauled off on barges. A strong odor which permeated the area from the sediment disappeared. A stone rip-rap
Managua central departments. This highway is commonly referred to as the "Northern Highway." The "Southern Highway", the southern part of the Pan-American highway, connects Managua to southern departments Carazo, Rivas and others. The "Carretera A Masaya" connects Managua to the departments of Masaya and Granada. The newly reconstructed "Carretera A León" connects Managua with León. All of these highways are in good condition, with little traffic congestion. Infrastructure on the highways is well maintained. This also tends to be true for cities and towns that are served or are in close distance with the freeways. However, this does not yield truthfully