In order for a water utility to be in a position to properly manage and maintain its water supply and sewerage system, it is necessary to establish a tariff that will cover the costs of this utility. It is essential that the tariff structure be made in such a way that not only economic but also social issues are well balanced within its framework, and that customers continue to be able to afford to pay the tariffs.

Tariff development is the basic tool for having an overview of the company's economic sustainability.