The Department of Water Management of Gipuzkoa gives to  ALTAIR the work of a detailed project to development the Composting Facility of the sludges from the Sewage Treatment Plants.

Following the waste treatment hierarchy established by the Environmental Department of the European Comision, this new Composting Facility will allow the material valuation of STP sludges into high quality compost usefull in agriculture. This phylosophy of waste management avoids other less recommendable waste treatments as the energy recovery and landfilling.