Wastewater reclamation and reuse refer to the process of collecting, treating, and repurposing wastewater for beneficial uses instead of discharging it directly into natural water bodies. In the context of hygiene, sanitation and waste management, wastewater reclamation is an essential strategy for conserving freshwater resources, protecting public health, reducing environmental pollution, and promoting sustainable development. It transforms wastewater from a liability into a valuable resource by applying appropriate treatment technologies to make it safe for specific applications. Wastewater is generated from domestic, commercial, institutional, and industrial activities. It contains organic matter, nutrients, suspended solids, pathogens, chemicals, and sometimes heavy metals. If discharged untreated, it contaminates rivers, lakes, groundwater, and soil, leading to waterborne diseases and ecological damage. Wastewater reclamation involves treating this used water to remove contaminants to a level suitable for its intended reuse. The degree of treatment depends on the quality required for the final application. The reclamation process generally includes preliminary, primary, secondary, and tertiary treatment stages. Preliminary treatment removes large solids and debris through screening and grit removal. Primary treatment allows suspended solids to settle by sedimentation. Secondary treatment uses biological processes, such as activated sludge or trickling filters, to break down organic matter. Tertiary or advanced treatment further improves water quality by removing nutrients like nitrogen and phosphorus, reducing pathogens through disinfection, and eliminating remaining dissolved contaminants using filtration, membrane processes, or advanced oxidation. The final step often includes disinfection using chlorine, ultraviolet radiation, or ozone to ensure that harmful microorganisms are eliminated. Reuse of treated wastewater means applying the reclaimed water for specific purposes instead of using freshwater. Reuse can be classified into direct reuse and indirect reuse. In direct reuse, treated wastewater is directly supplied for a particular purpose, such as irrigation or industrial cooling. In indirect reuse, treated wastewater is discharged into surface water or groundwater and later withdrawn for use after natural purification processes. From a hygiene and sanitation perspective, wastewater reclamation plays a vital role in reducing the spread of waterborne diseases. Proper treatment removes pathogens such as bacteria, viruses, and parasites that cause illnesses like cholera, typhoid, and dysentery. Organizations such as World Health Organization provide guidelines on safe use of treated wastewater, particularly in agriculture, to protect farmers, consumers, and communities. Adhering to such standards ensures that reuse practices do not compromise public health. One of the most common applications of treated wastewater is agricultural irrigation. Agriculture consumes a significant portion of freshwater resources. Reclaimed water can be used to irrigate