Our History

The company initially addressed the needs for modernizing the management of sanitation and drinking water networks in the areas surrounding Paris. Over time, its expertise and scope of action have continuously expanded.

1984

Foundation

  • The creation of PROLOG INGENIERIE is part of the growing awareness of “Water as a common heritage of the Nation” (with the first water laws of 1964 and 1992).
1989

Creation of SIGT

  • Specialized in IT studies and solutions for technical management.
1990

First modeling

  • First modeling of the Bièvre valley floor networks for SIAAP Participation in the development of SPIDA, the predecessor of ICM
1990

First SDA (Sanitation Study)

  • First SDA (Sanitation Study) for SIAAP
1992

Creation of SAGEE

  • Creation of SAGEE (Société d’Aménagement et de Gestion de l’Eau et de l’Environnement), specializing in metrology studies
1992-1998

SEDIF

  • SEDIF: Integration of a modeling tool into the supervision system at the Water Movement Center
1993

First SDA

  • First SDA for Drinking Water
1998-2002

MOE (Project Management)

  • Drinking water treatment station at Coulonges for the Syndicat de Damville (27)
2000

Design of EVE’m

  • Design of EVE’m, a management tool for sanitation networks, wastewater treatment plants (WWTPs), natural environments, and drinking water networks
1999

SyAGE

  • Implementation of a telemanagement system for regulating structures on the Yerres River
2003-2009

MOE (Project Management)

  • Demidoff Basin (38,000 m³) in Le Havre
2008

Creation of the River Division

2010

Lyon

  • Opening of a secondary office in Lyon
2013

Bordeaux

  • Opening of an office in Bordeaux and the first PAPI (Flood Prevention Action Program) study
2015

Creation of the Innovation Division

  • Creation of the Innovation Pole to continually offer high-value-added services and products
    First 3D modelling study
2016

Swimming-related studies

  • First study
2017

Certification ISO 9001-2015

2017-2019

MOE (Project Management)

  • Design of the Austerlitz Basin (50,000 m³)
2019-2022

Innovation coupling TELEMAC 2D-3D with a bacteriological module

  • Launch of the project
2020

Data mining

  • First study
2020-2023

MOE (Project Management)

  • Realization of the Austerlitz Basin project (€86M)
2024

Integration into the INFRANEO Group

AMO

  • Flood protection system for the Greater Paris Metropolis