SOLO, CENTRAL JAVA, INDONESIA, OCTOBER 10, 2026: Volunteers collect and sort waste trapped by a trash boom installed in the Premulung River in Joyontakan, Solo, as part of the Sungai Lestari program aimed at reducing river pollution and strengthening community-based waste management. The initiative, involving UNDP Indonesia, the Bina Karta Lestari Foundation and the Joyo Gumregah community group, conducts waste collection three times a week, with organizers saying between 80 and 100 kilograms of waste is collected during each operation. The material is sorted into organic, inorganic and hazardous waste categories. Photo by Yoma Suryadi / JNA PRESS (Photo by Yoma Times Suryadi/JNA Press via Nexpher Images)

Volunteers remove waste from river in Solo

SOLO, CENTRAL JAVA, INDONESIA, OCTOBER 10, 2026: Volunteers collect and sort waste trapped by a trash boom installed in the Premulung River in Joyontakan, Solo, as part of the Sungai Lestari program aimed at reducing river pollution and strengthening community-based waste management. The initiative, involving UNDP Indonesia, the Bina Karta Lestari Foundation and the Joyo Gumregah community group, conducts waste collection three times a week, with organizers saying between 80 and 100 kilograms of waste is collected during each operation. The material is sorted into organic, inorganic and hazardous waste categories. Photo by Yoma Suryadi / JNA PRESS

Volunteers remove waste from river in Solo (34 images)