A Spanish engineering company. Effectively uses engineering to reduce the effects of noise by various methods that have been approved by the Spanish Municipal Authorities as well as other National and European authorities. (Spanish)

Ecologists in Action, Madrid was founded 1978. It is a Federation of nature conservation groups in Spain, active internationally. (Spanish)

Mediterrania - Ecological Initiatives Center was founded in 1995. It operates on the social foundations of the Catalan neighborhood movement. Also works in Central America. (Spanish)

The Ministry of Environment, Madrid. Promotes the conservation of nature and ecology and talks about "thinking globally and acting locally" concept adopted by them.

UK government web site about the Environment Sector and markets in Spain. Covers all industries and the public and private life of the citizens of Spain, including activities like: garbage collection, water and waste water, land-sea-air and river pollution, renewable energies, used tyre, hospital and hazardous waste treatment and disposal, land remediation, environmental clean-up, forests, etc.