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Water introduced onto the network

The Hera Group's water supply sources comprise underground water, surface water and, to a lesser extent, springs. In the Romagna area almost all distributed water has been purchased wholesale from Romagna Acque - Societā delle Fonti, which manages the main water production plants and the adduction networks in the provinces of Forlė-Cesena, Ravenna and Rimini.
The purification processes vary in complexity depending on the quality of the source water: process steps include chemical and physical water drive, usually adopted for surface water, as well as simpler treatments of filtration and disinfection (in some cases, only disinfection) applied to water coming from deep wells and springs that already have good characteristics.
The treatments carried out guarantee that the distributed product has suitable chemical physical and microbiological features for human consumption, in constant observance of the limits laid down by current legislation.

Water introduced onto the network (breakdown by source)
 200920102011
 thousands of m3%thousands of m3%thousands of m3%
Groundwater152,94644.4%135,80639.8%147,91742.9%
Surface water165,17147.9%178,41452.2%171,48749.8%
Springs and minor sources26,4747.7%27,2598.0%25,0697.3%
Total344,591100.0%341,479100.0%344,473100.0%

Figures include both the civil and industrial aqueducts (the latter being part of the Territorial Operating Structures of Forlė-Cesena, Imola-Faenza, Modena and Ravenna and comprising around 5% of the total).

The data show a slight increase in the total volume of water introduced into the network (just under 1% compared to 2010), mainly in the Romagna area as a result of the climatic conditions. The climatic conditions, characterised by very scarce rainfall, led to a reduction in the availability of surface water, which had to be offset with the use of groundwater.
The 2009 figure above is influenced by the installation of new metres at supply sources belonging to Marche Multiservizi, with a significant reduction in estimated volumes compared to the previous year.
In particular, the provinces of Forlė-Cesena, Ravenna and Rimini had to deal with a genuine water emergency (as declared by Decree of the President of the Region of Emilia-Romagna 214/2011, which announced a state of emergency), which led to a notable reduction in the volumes supplied by the Aqueduct of Romagna (Ridracoli reservoir). The high number of network requests necessitated a significant exploitation of underground water reserves, and the aquifiers of Rimini in particular.
In Bologna, the construction of the Reno-Setta water connection led to a 21% reduction in the amount of groundwater collected in 2010 (approx. 10 million m3) as more surface water was collected. This variation is also reflected in the overall Group figures reported in the table.

Further water quality guarantees in Pontelagoscuro

In December 2011 the new clariflocculator was opened at the purification plant in Pontelagoscuro (an investment of approx. 0.9 million euro). This is designed to improve the quality and safety of the purification process for the 11 municipalities served.

 
Water introduced into the network by source and area (2011)
thousands of m3Bologna
TOS area
Ferrara
TOS area
Forli-Cesena
TOS area
Imola-Faenza
TOS area
Modena
TOS area
Ravenna
TOS area
Rimini
TOS area
Marche
Multiservizi Area
Groundwater40,3807,28011,5308,65443,70812528,3017,939
 of which purchased0011,5300012528,0750
Surface water47,38722,04021,60314,91949033,50111,72219,826
 of which purchased0021,28412,163033,50111,283346
Springs and minor sources4,328162,6201,1068,16001,9716,868
 of which purchased162,620061301470
Total92,09429,33635,75324,67952,35933,62641,99434,633

Figures include both the civil and industrial aqueducts (the latter being part of the Territorial Operating Structures of Forlė-Cesena, Imola-Faenza, and Ravenna and comprising around 5% of the total).

Considering just the civil aqueduct, the water introduced onto the network in the civil aqueducts in the seven TOS (excluding Marche Multiservizi), went from 305.5 million m3 in 2008 to 304.0 in 2011 (-0.5%). In 2008 (on a like-for-like basis) there was a 1.5% reduction compared with the previous year (equivalent to around 4 million m3).

 
Water introduced onto the network in the civil aqueduct (millions of cubic metres)
 

The distribution network (including Marche Multiservizi) extends for over 31,000 kilometres and, where possible, is interconnected and linked in order to guarantee supply continuity also in cases of temporary service interruptions regarding one or more pipes.