Elsevier, Digital Chemical Engineering, Volume 14, March 2025, 100217This research introduces APAH, an innovative IoT-based autonomous real-time monitoring system designed for industrial wastewater management, particularly in developing countries like India. By integrating multi-parameter sensors and advanced technologies such as machine learning, APAH continuously tracks key water quality metrics and enables timely interventions through automated controls and alerts, demonstrating significant improvements in water quality at industrial treatment plants in Maharashtra.