83SUEZAPPENDICES
SECTION Verification by
the Statutory Auditors Unit GRI-G4 2012 2013 2014 2015 2016 2017
Limited assurance
Reasonable assurance
Amount of BOD waste exiting wastewater treatment plants t G4-EN22 62,304 83,690 101,099 92,528 92,980 57,460
Treatment efficiency amount of BOD5 eliminated from treatment plants % G4-EN22 92 91 90 92 92 96
Amount of nitrogen entering wastewater treatment plants t G4-EN22 144,767 147,365 176,051 170,260 186,315 211,261
Amount of nitrogen exiting wastewater treatment plants t G4-EN22 54,526 50,279 65,231 57,820 69,894 75,770
Treatment efficiency amount of nitrogen eliminated from treatment plants % G4-EN22 62 66 63 66 62 64
Quantity of reagents used in wastewater treatment t G4-EN1 84,742 93,470 121,551 79,608 177,764 91,447
Percentage of water reused after treatment % G4-EN10 23 20 20 19 19.5 21.5
Percentage of sludge reused % G4-EN23 71 63 68 73 75 74
Production of electrical power2 xx GWh G4-EN3 NC 102 209 184 206 302
Production of thermal power2 xx GWh G4-EN3 NC 149 287 280 397 521
WASTE COLLECTION SERVICES Number of inhabitants receiving collection services Nb G4-9 49,292,436 52,276,940 36,216,532 33,945,986 33,724,081 32,387,155
Number of industrial and commercial customers receiving collection services Nb G4-9 466,275 417,349 410,077 400,227 397,922 367,717
Total tonnage of waste collected, excluding subcontracting t G4-EN23 - - - - 28,372,527 29,019,746
Total tonnage of household and similar waste collected t G4-EN23 11,582,456 10,507,863 9,629,682 10,074,889 9,233,408 9,491,322
Total tonnage of medical waste collected t G4-EN23 159,954 149,847 134,704 134,992 149,018 135,699
Total tonnage of industrial and commercial waste collected t G4-EN23 14,002,761 11,988,467 11,425,490 10,617,434 11,203,284 10,503,556
Tonnage of hazardous waste collected t G4-EN23 1,186,878 1,083,568 1,186,399 1,083,570 1,688,645 2,861,019
Tonnage of other waste collected (mixed household and industrial, construction) t G4-EN23 - - - - 6,098,171 6,028,150
Total number of waste collection, cleaning, and wastewater treatment trucks Nb G4-EN30 12,174 12,545 12,271 11,967 11,448 11,458
Percentage of the truck fleet running on alternative fuels % G4-EN30 4.7 2.9 8 11 8.78 3.20
Average diesel fuel consumption per truck m3/Nb G4-EN5 14.6 15 14.2 14.9 9.25 15.81
Average diesel fuel consumption per tonne collected l/t G4-EN5 7.4 6.7 7.5 6 3.8 6.23
SORTING AND RECYCLING BUSINESSES Number of sites operating in the transfer of waste Nb G4-9 270 385 332 336 319 345
Number of sites operating in sorting/recycling Nb G4-9 373 349 362 356 473 466
Tonnage of recovered materials from sorting centres t G4-EN23 8,781,841 8,568,410 7,954,843 10,468,000 10,377,442 10,239,066
Volume of raw materials from recycling t G4-EN23 NC 3,500,000 4,101,701 4,707,664 3,948,011 4,270,061
COMPOSTING ACTIVITIES Number of composting facilities Nb G4-9 128 123 127 121 107 104
Incoming tonnage t G4-EN23 2,081,652 2,209,965 2,041,291 1,786,805 2,222,970 2,241,462
Tonnage of compost produced t G4-EN23 847,401 901,538 916,963 853,797 792,079 858,840
Tonnage of sewage sludge treated for material recovery t G4-EN23 573,197 569,970 513,281 120,413 121,888 206,512
NON-HAZARDOUS WASTE THERMAL TREATMENT ACTIVITIES Number of urban waste incineration plants Nb G4-9 48 46 44 45 40 45
