The quality in Internet has a great value, and still more when is a web
page on health like a resource of drug dependence. This paper contains
the estimators and systems on quality in the web for the development of
a specific system to value the quality of a web site about drug dependence. A test of viability by means of the analysis of the main web pages
has been made on this subject, gathering the valuation from the point of
view of the user of the quality of the resources. Aspects of improvement
as the exactitude and reliability of the information, responsibility, and
development of descriptions and valuations of the external links have
been detected