Hiring Of The Works Of The 'Supply Project To Several Municipalities Of La Rioja-System Cidacos (La Rioja)' Phase Iv-Ramal De Alfaro, Susceptible To Being Co-Financed By The European Union Through The European Regional Development Fund (Feder), Feder La Rioja 2021-2027 Program, Within The Political Objective 2 A Greenest Europe, Low In Carbon, Priority In Carbon 2.5: Promotion Of Access To Water And Sustainable Water Management, Open Procedure, Several Criteria For Harmonized Award And Regulation.