Pharmaceutical Persistent Pollutants in the Aquatic Environment of Malaysia: Sources, Impacts, and Mitigation Strategies

Abstract

Pharmaceutical pollutants in aquatic environments have become a growing concern worldwide due to their persistence and potential ecological and human health impacts. In Malaysia, the rapid expansion of urban areas, increasing population, and rising healthcare demands have contributed to the growing influx of pharmaceutical pollutants into water bodies. These pollutants, including antibiotics, analgesics, and hormones, enter aquatic ecosystems primarily through wastewater discharge, agricultural runoff, and improper disposal of unused medications. The Malaysian water treatment infrastructure, designed to target conventional pollutants, often fails to adequately remove these pharmaceutical pollutants, leading to their accumulation in rivers, lakes, and coastal waters. This review explores the current state of pharmaceutical pollution in Malaysia's aquatic environments, focusing on the sources, types, and concentrations of pharmaceuticals detected in surface and wastewater systems. Additionally, the study investigates the ecological impacts, particularly on aquatic organisms, and the potential for bioaccumulation and trophic transfer, which could affect both wildlife and human populations. Existing mitigation efforts, such as policy initiatives, advancements in wastewater treatment technologies, and public awareness campaigns, are also discussed. However, significant challenges remain regarding regulatory enforcement and the need for more effective, cost-efficient removal technologies. This paper highlights the urgency of addressing pharmaceutical pollutants in Malaysia's aquatic systems. It suggests avenues for future research, including advanced treatment solutions and collaborative policy frameworks, to safeguard the environment and public health from these emerging contaminants.