- Rehabilitation and extension of the sanitation system of Greater Tunis, within the framework of the First Project of Sanitation of Greater Tunis, at a total cost of about 46 million TND;
- Extension and organization of the sewerage networks of Greater Tunis and construction of the Northern Tunis wastewater treatment plant, within the framework of the Second Project of Sanitation of Greater Tunis;
- Extension and organization of the sewerage networks of Greater Tunis and construction of the Northern Tunis wastewater treatment plant, within the framework of the Third Project of Sanitation of Greater Tunis, at a cost of about 14.6 million TND;
- Study of the Master Plan for Greater Tunis, within the framework of the Project of Sanitation of 30 Cities, at a total cost of about 0.9 million TND;
- Sanitation of certain quarters in the city of Tunis, within the framework of the Project of Sanitation of Sub-urban Quarters, at a total cost of about 2.2 million TND;
- Extension and rehabilitation of the sewerage network in Tunis, Le Bardo, La Marsa, La Goulette, Carthage, Gammarth and Le Kram, at a total cost of about 29 million TND;
- Rehabilitation of the wastewater treatment plant in Charguia and of the discharge system Charguia – Chotrana, within the framework of the Fourth Project of Sanitation of Greater Tunis, at a total cost of about 2.4 million TND.
- Sanitation of 45 popular quarters  for 38 600 beneficiaries
- Improvement of the enviornment state in the Sabkha of Sejoumi by the construction of 2 WWT plants and 2 water discharge in the port of Tunis and Oued Meliane, at a cost of about 2 million TND.

-  Construction of a pumping station downstream  the western canal of Southern Tunis Lake, at a cost of about 2.7 million TND.

- drainage of storm water in Southern Tunis zone ( western canal : Jebel Jelloud canal and Ben Arous canal, at a cost of about 10 million TND.

- implementation of wastewater transfer system from  Northern Tunis WWTP to Choutrana WWTP , at a cost of about 13 million TND.

- Sanitation of the quarters : El Frachich, El Maderssa 1 and 2, 25 juillet, 20 Mars, Jayara, elyosr, jebsa, Jabri, 1 and 2, the zone of Berine (Sidi Abdallah & Chelbi), Mghira Amzed in the Zone of Sidi Hassine, at a cost of about 6 million TND.

- rehabilitation of the sewerage networks of Tunis and Gammart within the frame work of  PRERERC, at a cost of about 2,5 million TND.

- Connection of the quarter Omar El Mokhtar in Sidi Hassine, at a cost of about 0,5 million TND.

-  implementation of a sewerage transfer system from the Northern Tunis WWTP to the Choutrana wastewater treatment plant, at a cost of 4.3 million dinars.