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 and reconstruction programs were expanded. New governmental buildings, galleries, museums, apartment buildings, squares, promenades, monuments, boat tours on Lake Managua, restaurants, nighttime entertainment, and broad avenues have resurrected part of downtown Managua's former vitality. Commercial activity, however, remains low. Residential and commercial buildings have been constructed on the outskirts of the city, in the same locales that were once used as refuge camps for those who were homeless after the earthquake. These booming locales have been of concern to the government because of their close proximity to Lake Managua. The construction of a new sewer system and the redirecting of