Purification and potabilization processes are aimed at ensuring that water complies with the established requirements for drinking water by improving its organoleptic aspects (color, odor, taste), chemical (e.g. by removing iron and manganese) and microbiological (e.g. water disinfection eliminates the possible presence of pathogenic microorganisms such as Escherichia coli) characteristics.
Main plants where the water distributed by Hera is purified (2020)
| Name | Source type | Treatament1 | Municipality | Prov. | Avg. prod (m3/day) |
|---|---|---|---|---|---|
| Val di Setta drinking water treatment plant | surface (Setta stream) | b 1 | Sasso Marconi | BO | 89,970 |
| San Vitale wells | aquifer | b 1 | Calderara di Reno | BO | 44,016 |
| Tiro a Segno wells | aquifer | c 1 | Bologna | BO | 31,596 |
| Borgo Panigale wells | aquifer | a 1 | Bologna | BO | 29,885 |
| Imola wells | aquifer | a 1 | Imola | BO | 14,432 |
| Mirandola wells | aquifer | a 1 | San Lazzaro di Savena | BO | 8,916 |
| Castel San Pietro drinking water treatment plant | surface (Bubano reservoirs) | c 1 | Castel San Pietro Terme | BO | 8,498 |
| San Giovanni in Persiceto wells | aquifer | b 2 | San Giovanni in Persiceto | BO | 7,127 |
| Fossolo wells | aquifer | c 1 | Bologna | BO | 5,628 |
| Suviana dam | surface (Suviana reservoir) | b 1 | Castel di Casio | BO | 4,975 |
| Bubano reservoirs 2 | surface (Bubano reservoirs) | c 1 | Mordano | BO | 2,389 |
| Borgo Tossignano drinking water treatment plant | surface (Santerno River) | c 1 | Borgo Tossignano | BO | 2,278 |
| Ridracoli dam 3 | surface (Ridracoli reservoir) | b 1 | Santa Sofia | FC | 115,817 |
| Cesena wells 4 | aquifer | a 1 | Cesena | FC | 18,883 |
| Forlì wells 4 | aquifer | b 1 | Forlì | FC | 17,405 |
| Pontelagoscuro drinking water treatment plant | surface (River Po) | c 1 | Ferrara | FE | 69,866 |
| Stellata wells | aquifer | b 1 | Bondeno | FE | 9,241 |
| Marzaglia wells | Aquifer | a 1 | Modena | MO | 32,910 |
| San Cesario wells | aquifer | a 2 | San Cesario sul Panaro | MO | 21,114 |
| Tommaselli wells | aquifer | a 1 | Formigine | MO | 18,233 |
| Santa Cecilia wells | aquifer | a 1 | Sassuolo | MO | 12,112 |
| Cognento wells | aquifer | a 1 | Modena | MO | 11,652 |
| Castelfranco wells | aquifer | a 2 | Castelfranco Emilia | MO | 7,505 |
| Castellaro wells | aquifer | a 1 | Spilamberto | MO | 4,236 |
| Scoltenna drinking water treatment plant | surface (Scoltenna River) | b 2 | Pavullo sul Frignano | MO | 1,807 |
| San Francesco drinking water treatment plant | surface (River Metauro) | c 1 | Saltara | PU | 46,276 |
| Borgheria drinking water treatment plant | wells | b 2 | Pesaro | PU | 2,267 |
| Pole drinking water treatment plant | surface (Burano River) | c 1 | Cagli | PU | 1,253 |
| NIP drinking water treatment plant 4 | surface 6 | c 1 | Ravenna | RA | 46,686 |
| Standiana drinking water treatment plant 5 | surface (River Po) | c 1 | Ravenna | RA | 34,728 |
| Castel Bolognese wells | aquifer | b 2 | Castel Bolognese | RA | 3,520 |
| Conselice drinking water treatment plant | surface (River Po) | c 1 | Conselice | RA | 2,810 |
| Massa Lombarda wells | aquifer | b 2 | Massa Lombarda | RA | 2,056 |
| Monte Fortino drinking water treatment plant | surface (Senio River) | c 2 | Casola Valsenio | RA | 1,252 |
| Campana wells 4 | aquifer | b 1 | Rimini | RN | 16,588 |
| Anello Nord wells 4 | aquifer | a 1 | Rimini | RN | 13,157 |
| Raggera wells 4 | aquifer | b 1 | Rimini | RN | 12,210 |
| Polveriera wells 4 | aquifer | a 1 | Rimini | RN | 9,158 |
| Senatello drinking water treatment plant | spring | a 1 | Casteldelci | RN | 3,744 |
| Conca dam 4 | surface (Conca basin) | c 1 | Misano Adriatico | RN | 2,121 |
| Randaccio wells | aquifer | a 2 | Duino Aurisina | TS | 99,970 |
| Boscochiaro drinking water treatment plant | surface (Adige River) | b 1 | Cavarzere | VE | 4,689 |
1 The treatment type is identified in the table by the following codes:
a = simple physical treatment and/or disinfection
b = normal physical and chemical treatment and disinfection
c = advanced physical and chemical treatment with refinement and disinfection;
1 = Chlorine dioxide-based disinfection
2 = Sodium hypochlorite-based disinfection.
2 The plant produces water for industrial mains network, a part of which is purified and fed into the civil water mains network. Indicated figures refer only to the share sent for purification.
3 The Santa Sofia drinking water treatment plant where water from the Ridracoli reservoir is treated has been managed by Romagna Acque - Società delle Fonti since its construction.
4 Plants managed by Romagna Acque - Società delle Fonti since 1 January 2009.
5 The Ravenna Standiana drinking water treatment plant is managed by Romagna Acque-Società delle Fonti and came operative in September 2015.
6 River Reno, River Lamone, River Po via the Emiliano-Romagnolo Canal.
Main plants where the water distributed by Hera is purified (2020)
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