"They end up using those training schools as a catch basin for all the child and youth problems in the state," he said.

Known for its river system, the region is the catch basin of Mindanao.

"It was a catch basin for everything that floated down the river," he said.

"All of this stuff goes into the catch basins, and it becomes solid, especially in the winter," he said.

For example, next to some malls there are huge, dry catch basins.

Some go into the catch basins, which is pretty sad.

It seemed to be coming from between me and the catch basin.

However, you can dig a catch basin to stop it.

Eventually the state provided some of the catch basins and pipe.

They found their way easily down a shallow cascade and around a catch basin below.