Sardinia: ENAS for water quality in strategic reserves

In the early 2000s, talking about providing the necessary requirements for the conservation of water resources and for the control of the qualitative characteristics of water intended for human consumption, CAE joined ENAS, the Water Authority of Sardinia, and ARPAS in the creation of a monitoring network that would allow an accurate analysis of the criteria that define water quality.

In the eutrophic lakes the water quality is very variable over time and along the depth, for this reason the project led to the installation, in the most important Sardinian drinking water reservoirs, of continuous automatic monitoring systems that, in combination with the manual monitoring systems in any case necessary, provide the managing Entities with support for decisions in particular with the main purpose of indicating daily the best intake level, to optimize the quality of the resource provided and reduce the treatment costs of the same.

The system currently includes 18 lakes instrumented with CAE rafts and included in the regional monitoring network: Bau Pressiu, Bidighinzu, Cedrino, Cixerri, Coghinas, Cuga, Flumendosa, Is Barrocus, Mannu a Monti Pranu, Monte Lerno, Mulargia, Posada a Maccheronis, Punta Gennarta, Rio Leni, S.Lucia Tortoli, Sos Canales, Temo, Tirso. Such improvement has made it possible to optimize the distribution of stations in the regional territory, achieving a greater density of measurement points and consequently a greater degree of significance of the information framework produced by the monitoring system. Each of the basins has been equipped with a weather station on the lake shore, a raft in the middle of the lake and a local monitoring system, the data are transmitted via UHF radio or satellite to Cagliari.

CAE confirms its leadership in the sector by winning the tender for the specific maintenance and control service for the servo-assisted functionality of hydrological stations and related local centres, including the general control centre in Cagliari. The service provides for the restoration of the correct functioning of all electrical, electronic, electromechanical equipment and the equipment necessary for the commissioning of the hydrological stations, the related local centres and the main centre of Cagliari making up the system and the continuous control of the operation of the system both remotely and through field interventions.