The writers of this book advocate for cost-effective and environmentally friendly water and wastewater treatment systems to treat a variety of water pollutants, including organic and inorganic compounds. The presence of these pollutants in water can be accelerated by rapidly increasing cities and businesses. Furthermore, they are a major source of concern because to their negative impacts on human and aquatic life. This book summarises current advancements in the use of low-cost technologies for treating organic and inorganic contaminants in water and wastewater. Civil, chemical, and environmental engineers, as well as environmental practitioners and academics, will benefit from this book.