In Colombia, in spite of the changes carried out with the reformes of 1994, in the sector of drinking water estructural problems persist in many municipalities. They are asociated to the quality, efficiency, continuity, coverage, and availability of the resource; resides, the goals of reducing costs, enlarging investments, promoting competition, and expanding coverage have not been achieved satisfactorily. It was thought that with the participation of the private sector there World be an enormous advance, but the results are not expected ones. En muchos de los municipios de Colombia, a pesar de los cambios realizados con las reformas de 1994, persisten los problemas en el sector de agua potable. Éstos se asocian a la calidad, la eficiencia, la continuidad, la cobertura y la disponibilidad del recurso; además de las metas de reducir costos, aumentar inversiones, fomentar la competencia y ampliar la cobertura no se han logrado satisfactoriamente.