The objective of the research was to determine the Impact of Public Investment projects on improving the living conditions of the population of the district of Marías - Huánuco 2007-2015. The type of research was applied, whose level of investigation was correlational. The research design was non-experimental - transversal. The research population consisted of 678 people over 18 years of age, from the district of Marías, beneficiary of the public investment projects of water and sanitation, health, education and electrification, located in the localities of Maynas, Patay Rondos, Marías, Chipaquillo, Guenehuylca, Ichic Marías, Pura, Tantacoto, Ticte, Ututo, Gorgor. The sample of the investigation was constituted by 80 people of the district of Marias, for the calculation of the size of the sample Probabilistic sampling was used. The results arrived at in the present investigation wer...