Wastewater treatment 1963 - 2018
Total of purified charge in sewage treatment plant (in thousand population equivalent) |
72.6
|
142.0
|
201.9
|
498.0
|
569.0
|
582.9
|
586.9
|
587.1
|
587.1
|
587.7
|
591.6
|
594.0
|
596.5
|
600.0
|
605.8
|
631.6
|
782.4
|
788.4
|
793.9
|
799.4
|
806.9
|
811.8
|
816.7
|
818.7
|
820.7
|
820.0
|
1 012.0
|
1 016.0
|
1 041.5
|
1 066.3
|
1 085.9
|
1 035.7
|
1 039.1
|
1 039.1
|
1 055.6
|
1 035.1
|
994.0
|
1 006.7
|
1 058.4
|
% of biologically purified charge |
10
|
20
|
29
|
71
|
81
|
83
|
84
|
84
|
84
|
84
|
84
|
85
|
86
|
87
|
88
|
89
|
91
|
92
|
92
|
93
|
94
|
94
|
94
|
94
|
95
|
95
|
95
|
97
|
96
|
97
|
98
|
98
|
98
|
98
|
98
|
98
|
98
|
98
|
99
|
| Investments by the Water management Fund in Wastewater treatment (in millions EUR) |
0.8
|
1.5
|
1.4
|
7.9
|
9.9
|
6.1
|
5.8
|
5.1
|
5.1
|
4.7
|
2.9
|
9.4
|
12.6
|
17.4
|
23.1
|
24.0
|
17.4
|
11.5
|
11.6
|
20.7
|
19.1
|
26.8
|
28.0
|
22.6
|
25.0
|
35.3
|
42.1
|
51.0
|
64.8
|
43.8
|
56.5
|
50.4
|
59.3
|
74.2
|
69.4
|
80.4
|
84.9
|
94.3
|
86.0
|
Purification in a biological sewage treatment plant by active sewage sludge permits to elimiate about 90% of the organic polluting charge.