Table
| 2016 | 2017 | 2018 | Change in per cent | |
|---|---|---|---|---|
| 2017 - 2018 | ||||
| Percentage of population connected to municipal wastewater facilities (per cent) | 84.4 | 84.9 | 85.3 | 0.5 |
| Total length of sewage pipelines (metres) | 37 373 027 | 37 399 466 | 37 918 481 | 1.4 |
| Percentage of total wastewater pipeline system renewed, 3-year-average (per cent | 0.61 | 0.61 | 0.60 | -1.6 |
| Average age of wastewater pipeline system (year) | 30.0 | 30.0 | 30.0 | 0.0 |
| Length of separate stormwater pipelines (metres) | 17 940 738 | 18 318 610 | 18 824 072 | 2.8 |
| Number of sewage overflow in sewage pipelines and manhole covers (numbers/km pipeline) | 0.053 | 0.054 | 0.051 | -5.6 |
| Total wastewater load in treatment plants (kg tot-P) | 3 037 997 | 3 096 898 | 2 987 737 | -3.5 |