The environmental information, programs and information systems. The environmental information services are, to a large extent, product of the progressive taking of conscience of the population, from the Conference of Stockholm of 1972, that begins to demand the governments to act on the threats to the health, the quality of life, and even the long term stability of the medio.ambiente of the planet. The most excellent characteristic of this information is the one of being a field to multidiscipline that it interests to an ample variety of scientific and technical sectors. Also it is necessary to consider the increasing different demand of information by part sectors, like the industrialist and that is generated so much by the necessity to respond more and more restrictive to environmental legislative exigencies, like giving answer to an environmental market with great possibilities of development (technical anti-pollution, recycled of materials, treatment of remainders, etc.). Before This necessity in this article some of the Programs and international Systems of greater interest are described