Koh Lipe has a garbage problem since many years as the tourism has increased. You can volunteer at his non-profit organization to help them clean the trash from this beautiful island.
In December 2013, a Thai-Swiss organization Trash Hero, has started organizing clean-ups in not only Koh Lipe, but everywhere in Koh Tarutao Marine National Park. Their main aim is to protect the island's beaches using only materials and people-power to hand.
They organize regular volunteer cleanups on every Monday. Local businesses have supported them thoroughly by supplying long-tailed boats, food, drinks and garbage bags. Over the years, around 1,000 volunteers have been able to remove 21,000kg of rubbish from the local beaches.