The gap sanitation infrastructure in the country is still widespread, particularly in rural areas. At the urban level, the largest
gap lies in the coverage of sanitation services in the field of municipal providers (outside Lima and Callao) exceeds 20% and
particularly in the area of Tumbes region (provinces of Zarumilla and Tumbes) on 48.56%, well above the national average.
In addition, quality indicators and nationally optimum levels not recorded, occurring in the provinces indicated an average
of 16.5 hours per day continuity, unbilled water above the level of 64% and less than 50% micromedición.
The provision of sanitation in the provinces of Zarumilla and Tumbes is concessioned since 2005 the company "Aguas de Tumbes S.A.". More than ten years later, the development of the concessionary scheme has the following problems: