After extensive geological, hydrogeological, hydrological and hydrochemical investigations in the area of the Perama Project as well as pumping tests, a sustainable water resources management scheme has been elaborated which guarantees the satisfaction of the water requirements of the Project, eliminating any adverse effect on surface and groundwater resources and the environment.

• During an average rainfall year the recycled tailings pond water and the saddle dams will provide 87% of the plant and mine water needs with 13% made up from a water well
• The two saddle dams collect rainwater and run-off during the wet winter months and can be diverted around the tailings pond or used in the plant 
• Run-off water from the mine and stockpile areas will be directed into the tailings pond 
• The water table is below the bottom of the final open pit and any surficial water is pumped to the tailings pond
• The actual external water needs, on a yearly average Hydrological conditions, are 25 m3/h and range from 0 m3/h to 77 m3/h in wet and driest periods respectively  
• Two, geological separately, aquifers are outcropped in the area, the Tertiary and the Mesozoic 
• Well W2R which locates in the Mesozoic Aquifer will be used for the project needs, as its water is unsuitable for drinking or irrigation  
• Water well W2R is capable of supplying plant water requirements even in the driest years
• Perama Village and the surrounding settlements drinking water and irrigation supply come from the Tertiary Aquifer 
• Perama project will not use the Tertiary aquifer which is useful for the surrounding communities 
• Well water is used only if recycled water from the TMF and saddle dams are not capable of supplying the plant requirements 
• “Well W2R can provide the total water requirements of the Project even in extended dry periods without any adverse environmental effect” – from Hydrogeological Study, October 2003 by Professor G. Kallergis, Director of the Hydrogeology Lab, University of Patras, Greece