Construction of sewerage network in order to carry the waste water to the treatment plant in town called Sapanca located in the northern part of Turkey.

In the construction;

• L = 2.280 m Ø 200 mm concrete pipe,
  
• L = 2.460 m Ø 300 mm concrete pipe,
  
• L = 860 m Ø 400 mm concrete pipe,
  
• L = 460 m Ø 500 mm concrete pipe,
  
• L = 1.560 m Ø 600 mm concrete pipe,
  
• L = 800 m Ø 800 mm reinforced concrete pipe,
  
• L = 1.110 m Ø 1000 mm reinforced concrete pipe,
  
• L = 6.640 m Ø 500 mm asbestos cement pipe,
  
• L = 830 m Ø 400 mm asbestos cement pipe has been laid.
  
• On the other hand two elevation facilities and a reservoir with a capacity of 50 m³ was built.

The facility became operational in 1998 with a cost of 11.571.617$.