A clean environment especially in the river has important role toward the health of society. Because the stream which passes through several places such as factory, forest, and residential had brought unknown materials which causes negative and positive effects for the society. This condition aggravated with many wastes disposal into the river such as happened on several rivers in Surabaya. The piles of garbage that bring many diseases also cause flood in rainy season. Therefore, PT Sari Mas Permai cooperates with Water Department and other relevant parties to held a community service along with the society in order to maintain the river ecosystem as it should be.
