Breakdown of wastewater billing structures
| Sewage structure . | Total number of cities . | Asia Pacific . | Eastern Europe and Central Asia . | Latin America and Caribbean . | Middle East and North Africa . | North America . | South Asia . | Sub-Saharan Africa . | Western Europe . |
|---|---|---|---|---|---|---|---|---|---|
| Separate billing | 465 | 102 | 80 | 39 | 21 | 90 | 21 | 24 | 88 |
| Combined billing | 98 | 14 | 1 | 21 | 10 | 5 | 16 | 27 | 4 |
| n/a | 5 | 1 | 4 | ||||||
| Fixed only | 54 | 23 | 1 | 8 | 8 | 6 | 3 | 5 | |
| Volumetric only | 237 | 62 | 74 | 15 | 9 | 16 | 11 | 15 | 35 |
| Volumetric and fixed | 174 | 17 | 5 | 16 | 12 | 66 | 4 | 6 | 48 |
| Sewage structure . | Total number of cities . | Asia Pacific . | Eastern Europe and Central Asia . | Latin America and Caribbean . | Middle East and North Africa . | North America . | South Asia . | Sub-Saharan Africa . | Western Europe . |
|---|---|---|---|---|---|---|---|---|---|
| Separate billing | 465 | 102 | 80 | 39 | 21 | 90 | 21 | 24 | 88 |
| Combined billing | 98 | 14 | 1 | 21 | 10 | 5 | 16 | 27 | 4 |
| n/a | 5 | 1 | 4 | ||||||
| Fixed only | 54 | 23 | 1 | 8 | 8 | 6 | 3 | 5 | |
| Volumetric only | 237 | 62 | 74 | 15 | 9 | 16 | 11 | 15 | 35 |
| Volumetric and fixed | 174 | 17 | 5 | 16 | 12 | 66 | 4 | 6 | 48 |