At Northern Technical University, the collected wastewater is transported to a central sewage treatment unit for a recycling process that effectively eliminates contaminants. This process involves several steps to produce environmentally safe recycled water, which can be reused for various purposes, including irrigating gardens. Additionally, a network of public sewers is available in the Northern Province of Iraq, catering to both domestic and commercial flows, along with several sewage treatment units designed for recycling sewage into clean, safe water.