Aryanti, J.A., Utama, P.B. and Nabila, M.F. 2025. THE EFFECTIVENESS OF ONLIMO UTILIZATION FOR WATER QUALITY MONITORING OF POLLUTION IN THE DOWNSTREAM AREA OF JANGKOK RIVER, MATARAM CITY. Indonesian Journal of Environmental Sustainability. 3, 1 (Jun. 2025), 1–11. DOI:https://doi.org/10.22373/ijes.v3i1.6822.