Panaji, Dec 1 (UNI) Voicing his concerns over the pollution in River Sal, BJP Spokesperson Savio Rodrigues on Thursday said that the problem of contamination is two-pronged and that sewage treatment plants to arrest contamination at source is the only solution to permanently stop the river pollution.

"You see an existing contamination and a persistent contamination. Many are focused on the existing contamination and failing to focus on the persistent contamination. The pollution of River Sal can be contained and contamination of the water treated. First treat the source of the pollution that flows into the water. Then treat pollution in the water. You can treat the water but if the source of contamination continues water will continue to get polluted even after cleaning. And the river pollution problem will persist,” he said in a statement.