The research titled "" unbilled water and its impact on the profitability of the Municipal Water and Sewerage San Martin SA, in the period 2014 ", aims to determine the incidence of non-revenue water in the profitability of the Company Municipal Drinking Water and Sewerage San Martin SA in the period 2014 applicative research type, descriptive, observational and cross-Experimental No. After applying the methodological process and analyzed the results obtained arrive at the following conclusions: • There is a direct incidence among non-revenue water and the profitability of EMAPA San Martin SA, the same as is evident in the water Billed represents S / 8,714,037 and the total turnover of the company 14´078, 627.0, it includes other services such as service drain, and with reference to the performance indicators of the study period indicating a value of water loss of 31.63%, the same as ...