¿Execution Of Work: Improvement And Expansion Of The Drinking Water System And Creation Of Basic Sanitation Services In The Hamlets Of Playa Hermosa And Balsahuayco, In The District Of Jaén, Province Of Jaén, Department Of Cajamarca - Contracting Of The Execution Of The Work Of The Public Investment Project: Improvement And Expansion Of The Drinking Water System And Creation Of Basic Sanitation Services In The Homes Of Beautiful Beach And Balsahuayco, In The District Of Jaen - Provin