58 Practical Procedures to make the Housing and Public Utility Policy a success The Jamhirya took measures to improve services extended to the citizen in the following manner: A) Real estate loaning through the Saving and Real Estate Investment Bank and commercial banks; B) Establish public companies to invest in housing; C) State appropriations for public housing; Within this framework, the following achievements were demonstrated: - The number of existing units implemented in previous stages is estimated according to 2006 census at 951402; - Expenditures allocated for housing projects and utilities in different areas for the past period have reached approximately 4.160 billion dinars. Implementation processes were conducted by the General Organization for Housing and Utilities, the Housing and Utility Project Implementation Agency, Saving and Real Estate Investment Bank, the Agrarian Bank (AgoHousing) and the Municipality Management and Development Organ. - In the field of utilities, a number of wastewater treatment stations were installed in addition to more than 7500 km long sanitary drainage networks. Several wastewater and rainfall pumping stations were constructed. - Several water supply systems were applied with lengths of water supply networks and their main and sub-lines reaching more than 35 thousand kms, and more than 1000 underground and elevated water tanks, in addition to sea water desalination and underground water units to provide drinking water to citizens in all cities and villages of the Great Jamhirya. - Projects of integrated utilities covering 41 cities in different administrative divisions and others of basic utilities for the remaining cities and compounds were implemented including: