Novel contaminants that pose serious risks to environmental health have emerged as a result of the modern world’s fast industrialisation and urbanisation. This chapter provides a comprehensive overview of environmental applications, focusing on the monitoring and remediation techniques employed to address emerging pollutants. The difficulties posed by newly discovered pollutants—such as medications, microplastics, and endocrine disruptors—are addressed specifically. These pollutants also carry dangers to human and ecological health, and their intricate nature necessitates the use of integrated techniques. The monitoring section explores cutting-edge technologies and methodologies for the detection and quantification of pollutants in air, water, and soil. The remediation techniques section examines innovative strategies to mitigate the impact of emerging pollutants on ecosystems. The chapter also emphasizes the importance of understanding the interactions between pollutants and environmental matrices to optimise remediation processes. It highlights the interdisciplinary nature of addressing environmental challenges and calls for continued research and technological advancements to safeguard the planet for future generations.