SIAAP (Syndicat Interdépartemental pour l’Assainissement de l’Agglomération Parisienne) is one of Europe’s largest wastewater treatment operators. Responsible for collecting and treating wastewater from the greater Paris region, SIAAP manages critical infrastructure that serves millions of citizens every day. To support its digital transformation strategy and ensure reliable management of engineering and asset information, SIAAP required a platform capable of connecting data, systems, and teams across the organization. The goal was to enable a continuous flow of information along the entire lifecycle of its plants, from engineering and commissioning to operations, maintenance, and future modernization projects.

The Challenge: Breaking Down Information Silos

Before selecting Engineering Base, SIAAP was searching for a solution that could become the central hub for its asset information and ensure interoperability across its system landscape. Several proof-of-concept projects with alternative solutions were conducted, but none fully met the organization’s requirements. Existing approaches would have forced the organization to scale back its ambitions and introduced significant risks to the success of its convergence program and its adoption by operational teams.

Information was spread across different tools, data continuity was limited, and collaboration between disciplines remained challenging. Without a common platform, manual data verification, repeated diagnostics, and lengthy processing times created unnecessary effort and slowed operational processes.

Why Engineering Base?

SIAAP required more than just another engineering platform. The organization needed a solution capable of becoming the digital backbone of its asset information strategy, seamlessly connecting the existing application landscape while supporting long-term digital transformation goals. Beyond the technical capabilities, SIAAP was looking for a partner that understood the operational realities of managing critical infrastructure. 

“Engineering Base’s ability to integrate natively with our legacy information systems, its transparent operation without a ‘black box’ effect, and the availability of open APIs were decisive factors. We were also impressed by the commitment of the AUCOTEC teams, their dynamism, and their genuine understanding of our business challenges.”

Klervie Civel-Rivoal BIM Coordinator, SIAAP

From Data Islands to a Connected Engineering Environment

Today, SIAAP benefits from a connected digital environment that enables information to flow seamlessly across departments, systems, and project phases. Engineering Base serves as the central platform for managing and maintaining P&IDs while creating a reliable and consistent information backbone behind them. Engineering Base manages engineering information within a structured data model, while documents such as P&IDs become just one representation of that information.

By establishing a trusted source of engineering and asset information, Engineering Base has laid the foundation for improved collaboration, better decision-making, and greater transparency across the entire lifecycle of SIAAP’s facilities. Teams can access accurate and up-to-date information whenever it is needed, reducing manual verification efforts and supporting more efficient ways of working.

This has proven particularly valuable during modernization projects and asset documentation campaigns, where reliable data is essential for making informed decisions and ensuring continuity between engineering, operations, and long-term asset management.

Business Benefits

With Engineering Base, SIAAP has achieved several strategic and operational advantages:

  • Reduced operational risk through reliable, consistent engineering information across critical wastewater assets
  • Higher productivity by eliminating manual data validation and avoiding repeated engineering work
  • Faster execution of modernization projects with trusted asset information available from the start.
  • Improved regulatory responsiveness, enabling quicker and more reliable answers to authorities and auditors
  • Greater organizational alignment by connecting engineering, operations, maintenance and BIM around a common information model.
  • A scalable digital foundation that supports future initiatives such as BIM, digital twins, AI-driven analytics and predictive maintenance

Beyond cost savings, Engineering Base provides structure to technical projects and helps align digital tools with real operational needs.

A Foundation for BIM and Future Growth

Engineering Base has become more than an engineering platform. It is now a strategic enabler for SIAAP’s digital transformation roadmap. By supporting BIM deployment, connecting engineering and business processes, and ensuring continuity of engineering data, the platform creates lasting value across the organization.

“Engineering Base has established itself as the central tool for managing and updating P&IDs. It ensures connectivity with other information systems, facilitates the adoption of digital tools by business units, and serves as a key driver for BIM deployment,” says Klervie Civel-Rivoal.

Looking Ahead

As SIAAP continues its digital transformation journey, Engineering Base provides a scalable foundation for future initiatives. By connecting people, processes, and information, the platform helps ensure that operational excellence, regulatory compliance, and innovation remain at the heart of the organization’s strategy.