The general objective is to deal with specific problems of water contamination, solution of these problems is of vital importance to SME dedicated to aquaculture. The first specific objective will be generated 3-4 Joint Research Projects with consortia that integrated S&Tand SME. The second will be the contribution to the improvement of the quality of waterthrough efficient processes of decontamination (heavy metals, nitrates, pesticides...) and the last one is a better management of water resources. The AM should joint together persons of 3 distinct fields: New, or adapted, technologies, S&T on the aquaculture sector and SME. Each consortium, and its Joint Res. Proposal, should integrated the 3 sectors presented at the workshop