Construction and expansion
New wastewater and drinking water treatment plants, extensions to existing facilities and works for water and waste treatment.
CM Costruzioni
Wastewater and drinking water treatment
At the heart of C.M. Costruzioni’s work: construction, expansion and refurbishment of water treatment plants.
Activities and expertise
From construction to maintenance
More than thirty years of experience from the companies behind C.M. Costruzioni brings together plant engineering, structural expertise and metal fabrication.
Plant upgrades and maintenance
Plant upgrades and refurbishment, scheduled and corrective maintenance, pumping and lifting systems.
Integrated works
Tanks, hydraulic works and steel structures developed alongside mechanical and plant systems.
Plant engineering, steelwork and prefabrication
Innovation and integrated expertise
C.M. Costruzioni combines steel prefabrication with experience in water and environmental treatment plants.
This combination enables, for example, the design and construction of prefabricated steel tanks, walkways, roofs and technical rooms fully integrated with mechanical and plant systems, reducing time on site and supporting high construction quality.
- 01 Prefabricated tank
- 02 Steel structure
- 03 Plant connections
Projects
Treatment plants and works
The Comacchio, Piacenza d’Adige and Fiorenzuola d’Arda sites, followed by other projects in the company archive.
Reagent area at the wastewater treatment plant
Comacchio
New reagent storage and dosing area for biological wastewater treatment.
The upgrade includes two reinforced-concrete containment tanks and three GRP tanks of 25 m³ each: two for the carbon solution supporting nitrogen removal and one for the phosphorus-removal reagent. Connections to the dosing skids, GRP stairs and platforms complete the area.
Systems tested in February 2026
Overview of the Comacchio wastewater treatment plant
Aerial view of walkways, tanks and storage vessels at Comacchio
Walkways and plant components at Comacchio
Tanks and pipes beneath a steel roof at Comacchio
Pipework and valves at Comacchio
Overhead view of circular and rectangular tanks at Comacchio01 Water treatment 2025–2026 Comacchio · Reagent area at the wastewater treatment plant 
Drinking water treatment plant
Piacenza d’Adige
Participation in the upgrade and refurbishment of the drinking water treatment plant to improve the reliability of the water supply and integrate new supply sources.
The project includes a new drinking water storage tank, refurbishment of the final pumping stage and pipework, discharge treatment, and upgrades to electrical and remote-control systems. It forms part of the programme to replace PFAS-contaminated sources, integrating supplies from the Camazzole well field to the Montagnana area.
Nearing completion in April 2026
Aerial view of the tanks at the Piacenza d’Adige drinking water treatment plant
Containment tanks and green storage tanks at Piacenza d’Adige
Overhead view of tanks and storage vessels at Piacenza d’Adige
Circular tank with connecting pipes at Piacenza d’Adige
Structures and tanks at Piacenza d’Adige
Pipes and equipment alongside a tank at Piacenza d’Adige02 Water treatment 2026 Piacenza d’Adige · Drinking water treatment plant 
Wastewater treatment plant upgrade
Fiorenzuola d’Arda
Upgrade of the biological process to remove nitrogen and the main pollutants from wastewater.
C.M. Costruzioni’s works include new water treatment lines designed for 21,500 population equivalent. The plant’s authorised capacity remains unchanged; the project considers incoming flows of up to five times the average daily flow.
Works completed at the end of 2025
Aerial view of circular tanks at the Fiorenzuola wastewater treatment plant
Pipe and valve assembly between plant buildings at Fiorenzuola d’Arda
Steel components and pipes at Fiorenzuola
Covered circular tank at Fiorenzuola d’Arda
Aerial view of covered tanks at Fiorenzuola
Overhead view of structures, walkways and tanks at Fiorenzuola d’Arda04 Water treatment 2025 Fiorenzuola d’Arda · Wastewater treatment plant expansion 
Other treatment plants and works
Wastewater treatment plants, pre-treatment and plant components: a selection of projects documented in the company archive.
Upgrade and expansion of the Ceggia wastewater treatment plantCeggia (VE)
Existing plant with a nominal capacity of 5,000 population equivalent; works to increase capacity to 6,750 population equivalent and adapt the treatment process to applicable regulatory limits, including removal of 75% of the incoming nitrogen load.
Client: Veritas S.p.A.
Open 3 images
Expansion of the Carbonera wastewater treatment plantCarbonera (TV)
Existing plant with a nominal capacity of 40,000 population equivalent; works to increase capacity to 60,000 population equivalent.
Client: Alto Trevigliano Servizi S.p.A.
Open 3 images
Capacity increase and optimisation of the Caminata wastewater treatment plantCapacity increase and optimisation of the Caminata wastewater treatment plantRectangular tank and internal supports at CaminataCovered units and circular tank at Caminata
Agazzano Ovest wastewater treatment plantAgazzano Ovest (PC)
New plant with a capacity of 1,000 population equivalent.
Client: IRETI S.p.A. (IREN Group)
Open 6 images
Capacity increase and optimisation of the Monzambano wastewater treatment plantCapacity increase and optimisation of the Monzambano wastewater treatment plantCapacity increase and optimisation of the Monzambano wastewater treatment plantVertical pipes and valves in the plant chamber at MonzambanoConcrete technical chamber at MonzambanoDiffusers on the bottom of the tank at Monzambano
A2A screening – MBR sectionA2A screening – MBR section
Basket screens and screening pre-treatment for A2A’s MBR section.
Open 2 images
Nuove Acque pre-treatmentTank and walkways at the Laterina plant
Drawing / rendering · HERATech wastewater treatment plantProjects
Photographs: Water treatmentCM Costruzioni company brochure
Activities, solutions and projects across C.M. Costruzioni’s five areas of work.