| No |
Data Item |
Comment |
Unit |
| 70 |
Population served – sewer connection |
Population under responsibility of the utility with sewerage services through house connections. |
‘000 inhabitants |
| 71 |
Number of sewer connections |
Total number of sewer connections (residential and non-residential) at year end in thousands. |
‘000 |
| 74 |
Length of the sewer system(s) |
Total length of the sewerage network (excluding service connections). |
km |
| 79 |
Number of blockages in the sewer system(s) |
Total number of sewer blockages in the network during the year. |
#/year |
| No |
Data Item |
Comment |
Unit |
| 81a |
Total volume of wastewater collected |
Volume of wastewater collected through the sewer system or by tanker.
|
Million m3/year |
| |
|
Where it cannot be measured, estimates should be made based on water use & infiltration from the ground (which should be included). |
|
| 81b |
Total volume of wastewater collected – residential |
Volume of wastewater collected from residential connections through the sewer system or by tanker |
Million m3/year |
| |
|
Where it cannot be measured, estimates should be made based on water use & infiltration from the ground (which should be included). |
|
| 81c |
Total volume of wastewater collected – industrial & commercial |
Volume of wastewater collected from industrial and commercial connections through the sewer system or by tanker |
Million m3/year |
| |
|
Where it cannot be measured, estimates should be made based on water use & infiltration from the ground (which should be included). |
|
| 81d |
Volume of wastewater that is treated to primary level |
Primary treatment is settlement that removes a significant proportion of solid matter. Screens are not primary treatment. |
‘Million m3/year |
| 81e |
Volume of wastewater that is treated to at least secondary level |
Secondary treatment is generally biological, and removes oxygen demand amongst other contaminants. |
Million m3/year |
