In 2013, the socio-economic context was marked by the contraction of economic activity which in general allows to an improvement of environmental indicators. The air quality index, measured in network monitoring stations, recorded in 2013 over 80% of days with air quality between "good" and "very good". The quality of water for human consumption, measured by the safe water indicator, reached in 2013 a value of 98.2%. In the opposite direction the amount of waste generated in 2013 increased by about 11%, with emissions from this sector to evolve at an annual average growth rate of 1.4% since 1990.