Ongoing diagnosis: Management of collected/transported flows and discharges into the natural environment

Arrêté du 21 juillet 2015 - Diagnostic permanent


Implementation of Article 12 of the Order of 21 July 2015 relating to sanitation systems (Article 9 of the Order of 31 July 2020):

- Continuous knowledge of the functioning,
- Prevent or identify malfunctions,
- Monitor and evaluate the effectiveness of the actions undertaken,
- To operate in a logic of continuous improvement.

Diagnostic permanent des réseaux d'assainissement

The 3D EAU solution

The proposed methodology relates to the permanent diagnosis required in terms of the management of collected/transported flows and discharges into the natural environment: installation of metrological equipment and treatment/analysis/evaluation of the data obtained.

1 - Field surveys


2 - Definition of a campaign of measures to be carried out


3 - Rainfall analysis


4 - Analysis of rainfall and flow data

5 - Comparative analysis


As part of the permanent diagnosis, 3D EAU provides hydraulic expertise on sites identified as "to be equipped" by the local authority, the operator and/or the service provider's design office, in order to recommend a measurement solution in accordance with the expectations of the regulations and the technical guide for implementing the permanent diagnosis published by ASTEE, which is available via this link.

Translated with (free version)



Mise en oeuvre du diagnostic permanent
Charte graphique 3D EAU.bmp
  • Taking into account the context: analysis of available data,

  • Hydraulic expertise of each measuring point,

  • Technical analysis of several scenarios: accuracy, reliability, ...

  • Economic analysis of several scenarios: investment, use of sensors and data, ...

These topics may also be of interest to you