| Value | Category | Cases | |
|---|---|---|---|
| 1 | No measures | 1490 |
90.6%
|
| 2 | Rainwater tank from roof | 41 |
2.5%
|
| 3 | Ditch | 98 |
6%
|
| 4 | Piped away | 4 |
0.2%
|
| 5 | Other | 11 |
0.7%
|