Another of the ways in which ASUR is trying to minimise its airports’ environmental impact is to guarantee a responsible use of water. To this end, eight of ASUR’s nine airports are equipped with treatment plants that receive all waste water from aircraft, terminals and administrative buildings. The plants use biological and mechanical treatment processes to purify the waste water to a standard where it is clean enough to be reused or discharged without presenting any risk to other water sources.
The water that is recycled is used for watering gardens and green areas, which helps to reduce the demands placed by the airports on local water supplies. Altogether in 2008, water consumption increased in ASUR’s airports by 10.4% compared to 2007, due mainly to the construction of new infrastructure in Cancún.