| Value | Category | Cases | |
|---|---|---|---|
| 1 | Wastewater | 303 |
11.6%
|
| 2 | Dumping site | 154 |
5.9%
|
| 3 | Public restrooms | 5 |
0.2%
|
| 4 | Transportation | 88 |
3.4%
|
| 5 | Agricultural wastes | 272 |
10.4%
|
| 6 | Industrial activities | 9 |
0.3%
|
| 7 | others | 36 |
1.4%
|
| Sysmiss | 1745 |