The strengthening of the water distribution system in the Cotonou agglomeration has been pursued in recent years. The project, subject of this assessment mission, is the Phase 2, and was conducted under a financing package through loans and grants (26 million euros). The European Union participated as a gift at EUR 8 million through the facility ACP - EU Water Facility. The beneficiary is SONEB through the Beninese government. This mission aims to analyze and assess the technical quality of actually carried from markets work (specifications and technical requirements) based on the assessment criteria of the "OCDE-CAD" : relevance, effectiveness, efficiency, and sustainability impacts. The assessment must also enable support for future formulations in the context of future EU interventions in the field of access to water.