77SUEZAPPENDICES

1. Human resources indicators (quantitative information): Total headcount; Distribution of the headcount between managers and non-managers; Proportion of women (mix rate) in total headcount; Proportion of women (mix rate) amongst managers; Age pyramid; Turnover; Resignation rate voluntary turnover; Hiring rate (permanent and fixed-term contracts); Annual number of training hours per employee; Proportion of employees who benefited from training (excluding e-learning); Gross salaries; Lost-time accidents frequency rate; Severity rate; Number of fatal accidents (employees); Number of newly recognised occupational diseases; Rate of employees covered by social dialogue schemes (at the company and more global level). Social indicators (quantitative information): Number of trained professionals from water/ sanitation services in developing countries; SUEZ Initiatives Fund s annual grant amount. Social indicator (qualitative information): Commitment no4 of the Roadmap 2017-2021, Mastering the stakes linked to globalisation: promoting a responsible supply chain . Environmental indicators (quantitative information): Energy production and energy consumption (primary and secondary sources) of the Group s Water activities; Production of useful energy and energy consumption of the Group s Recycling and Recovery activities; Material recovery tonnage; Direct greenhouse gas (GHG) emissions from processes or equipment owned or controlled by the Group, and indirect emissions associated with the consumption of electricity and heat; Greenhouse gas emissions avoided by the Group s customers linked to the recovery of materials and to the energy recovery activities; Technical yield of the networks of the Group s Water activities (equivalent inhabitants). 2. Human resources information: SUEZ Recycling & Recovery Holdings UK Ltd, SUEZ Recycling AB, SUEZ R&V Nord Est, SUEZ Eau France, LYDEC SA, SUEZ Water Inc. Environmental information: SUEZ R&V France (including the Astria site), SUEZ Recycling & Recovery UK (including the Packington site), Water North America (including the New Jersey site), SUEZ Eau France (including the Bordeaux site), AGBAR IG (including the EMASAGRA and SGAB Aigues de Barcelona sites).

II. CONCLUSION ON THE FAIRNESS OF CSR INFORMATION

NATURE AND SCOPE OF OUR WORK We conducted about thirty interviews with the persons responsible for preparing the CSR Information in the departments in charge of collecting the information and, where appropriate, responsible for internal control and risk management procedures, in order to: assess the suitability of the Guidelines in terms of their relevance, completeness, reliability, neutrality and understandability, and taking into account industry best practices where appropriate; verify the implementation of data-collection, compilation, processing and control process to reach completeness and consistency of the CSR Information and obtain an understanding of the internal control and risk management procedures used to prepare the CSR Information.

We determined the nature and scope of our tests and procedures based on the nature and importance of the CSR Information with respect to the characteristics of the Company, the human resources and environmental challenges of its activities, its sustainability strategy and industry best practices. Regarding the CSR Information that we considered to be the most important1: at parent entity level, we referred to documentary sources and conducted interviews to corroborate the qualitative information (organisation, policies, actions), performed analytical procedures on the quantitative information and verified, using sampling techniques, the calculations and the consolidation of the data. We also verified that the information was consistent and in agreement with the other information in the Management Report; at the level of a representative sample of entities selected by us2 on the basis of their activity, their contribution to the consolidated indicators, their location and a risk analysis, we conducted interviews to verify that procedures are properly applied, and we performed tests of details, using sampling techniques, in order to verify the calculations and reconcile the data with the supporting documents.

The selected sample represents on average 23% of headcount, considered as material data of social issues and between 27% and 63% of quantitative environmental data considered as material data of environmental issues. For the remaining consolidated CSR Information, we assessed its consistency based on our understanding of the Company. We also assessed the relevance of explanations provided for any information that was not disclosed, either in whole or in part. We believe that the sampling methods and sample sizes we have used, based on our professional judgement, are sufficient to provide a basis for our limited assurance conclusion; a higher level of assurance would have required us to carry out more extensive procedures. Due to the use of sampling techniques and other limitations inherent to information and internal control systems, the risk of not detecting a material misstatement in the CSR information cannot be totally eliminated.

CONCLUSION Based on the work performed, no material misstatement has come to our attention that causes us to believe that the CSR Information, taken as a whole, is not presented fairly in accordance with the Guidelines.

Paris, La Défense, 28 February 2018 The independent verifier MAZARS SAS

ACHOUR MESSAS PARTNER

EDWIGE REY PARTNER CSR & SUSTAINABLE

DEVELOPMENT