| Value | Category | Cases | |
|---|---|---|---|
| 1 | UNDERGROUND DRAINS | 701 |
7.3%
|
| 2 | OPEN DRAINS | 446 |
4.6%
|
| 3 | SOAK PIT | 7317 |
76.2%
|
| 4 | NONE | 1136 |
11.8%
|