Hera Group’s water supply sources comprise underground water, surface water and, to a lesser extent, springs. In Romagna, the distributed water is purchased wholesale from Romagna Acque – Società delle Fonti.
The drinking water purification processes vary in complexity depending on the quality of the source water: they range from advanced chemical and physical processes, usually used for surface water, to simpler filtration and disinfection treatments for water coming from deep wells and springs that is already of good quality when collected.
The treatments carried out ensure that the product we distribute has suitable chemical physical and microbiological features for human consumption, and is constantly compliant with the limits laid down by current regulations.
|Thousand of m3||2015||2016||2017|
|Springs and minor sources||28,390||6.7%||29,460||7.0%||26,146||6.1%|
Figures include both the civil and industrial water supply networks (the latter being present in the Forlì-Cesena, Imola-Faenza, Modena and Ravenna areas, and account for around 3% of the total).
The data shown shows a total volume of water fed into the network slightly up compared to 2016 (+1.9%), which in turn was slightly compared to the previous year.
The mix of supply sources is substantially unchanged compared to 2016. From a geographical point of view, the share of groundwater is lowest in the Marche Multiservizi area (22%), while it is predominant in the Triveneto area (91%).
In Emilia-Romagna, the data on the total volume of water fed into the network in 2017 show a significant increase compared to 2016 (+3.4%). In terms of the use of the various sources, the extended drought period led to a greater use of groundwater (+8.7% compared to 2016). Considering only the domestic water network Hera Spa operates, in 2017, 308 million m3 of water was fed into it (+3.4% compared to 2016). The territories of Bologna and Forlì-Cesena are those that increased the most compared to the previous year. Limiting the analysis to domestic consumption only, it is interesting to note that in the 2008-2016 period the water sold decreased significantly, by 8.3%.
Hera Group’s distribution network covers 35,096 kilometres and, where possible, is interconnected and linked in order to ensure supply continuity even in the event of temporary interruptions of one or more pipelines.
The amount of asbestos cement in the water network is continuing to decrease, and accounted for 20.8% of the Group’s share in 2017. The slight decrease is due to use of materials other than asbestos cement in new networks or in those subject to extraordinary maintenance. Over the last 3 years the Group has replaced approximately 30 kilometres of asbestos cement mesh.