Summary  

The growing demand for water, in quantity and quality, perceived in the countries in development, 
due to search by the multiple needs of a growing urban population that requires improving their 
standard of living, permanent pressure on the managers of water, based on the constant improvement 
of its performance and forces them to rethink its plan of action, up to now inconsistent and trivial 
in most of them, committing the balance among the aspects involved in the water service.   
To improve the acting of the supplies will mean them that they should become, early better than late, 
in agents of sustainable systems of water, whenever they are understood well and the norms and 
politicians accept recommended for this end, with good sense and it disciplines, for all those involved 
of the scenario urban hydraulic.  
For our part, experts that the optimization of the acting in the supplies of water should still be 
summed up and to think about in a more comprehensible way, practice and simple for all the organisms 
operators of the environment, in a specific and integral technical language, this investigation work 
is born a first group of social, economic and environmental indicators that you/they allow to diagnose 
the sustainable in urban systems of drinkable water by means of the Index of Sustainable of Supplies to 
adapt - ISA -; and with base in it, their classification and later selection of general alternatives 
to be included in a plan of measures that allows to improve it.  
The method ISA here proposed, it is evaluated by means of the intervention and setting in practice in 
several supplies of water of the Ecuador. Being always looked for manage to get the best experiences, 
conclusions and profitable recommendations in the even developing countries.