The illegal buildings and illegal connections are responsible for damage to the sewerage system designed for a capacity of 200,000 people in the 1960s. No new wastewater infrastructure has been built to keep pace with the increasing population in Tirana, which now stands at almost one million. In the new suburbs there is no sewerage infrastructure, new buildings are equipped with septic tanks which are emptied by pumping trucks, and sludge is discharged into the sewerage system.