Water Recycling and Reuse Program
As part of its commitment to sustainable resource management and environmental protection, Navoi State University operates a comprehensive Water Recycling and Reuse Program designed to reduce freshwater consumption, promote circular water use, and support the objectives of the University’s Water Conservation and Sustainable Water Management Strategy (2025–2030).
The University’s water recycling system is based on the collection, treatment, and reuse of non-potable water generated from campus activities. Greywater originating from sinks, showers, and laundry facilities, together with rainwater collected through roof drainage and stormwater collection systems, is directed to centralized storage facilities. This approach enables the University to establish a reliable source of water for secondary applications while reducing dependence on potable water supplies.
Prior to reuse, collected water undergoes filtration and treatment processes to ensure its suitability for environmental and operational purposes. Water quality management procedures are implemented in accordance with the Water Code of the Republic of Uzbekistan, the Law of the Republic of Uzbekistan “On Water and Water Use”, Presidential Resolution No. PQ-5 of 5 January 2024 on improving water resources management and increasing water-use efficiency, and applicable sanitary and environmental regulations. The University cooperates with regional water management authorities and specialists to ensure that water treatment and reuse practices comply with national requirements.
Recycled water is utilized throughout the campus for a variety of non-potable purposes. These include irrigation of green spaces, landscaped areas, and tree plantations, including the University’s Garden of Intellectuals and other sustainability-focused green zones. Reused water also supports facility maintenance activities such as cleaning pathways, sidewalks, outdoor infrastructure, and service areas. In selected facilities, recycled water is additionally used for sanitary flushing systems, contributing to the reduction of potable water demand.
1. Treated water for Irrigation
2.Treated water for Cleaning Purposes- Vehicle Washing
Maintaining a clean and welcoming environment across sidewalks, courtyards, and student gathering zones requires a substantial amount of water. Traditionally, treated water is used for these purposes, but stored water offers a far more sustainable alternative. Using harvested or recycled water for cleaning pathways, floors, and open areas helps preserve high-quality drinking water for essential needs such as cooking and hydration. It also demonstrates the university’s commitment to responsible resource allocation, ensuring that every drop of treated water is used where it is most needed.
NSU operates a number of vehicles, including buses for student transport, official cars, and maintenance equipment. These require regular washing to ensure safety, cleanliness, and functionality. Stored water can easily be directed toward designated washing points, reducing the demand for potable water. Over time, this practice would save thousands of liters of fresh water each year. By making this switch, NSU not only cuts costs but also provides a clear example of how institutions can adopt simple, practical measures to support conservation.
3. Treated water use for dormitory showers and sport facility’s showers
4. Treated water for toilet flushing
№ | Description of Water Source | Annual Volume (m3) | Percentage (%) | Usage Purpose |
1 | Total Water Consumption | 45,000 | 100% | All campus activities |
2 | Recycled Greywater (Sinks, showers, laundry) | 12,500 | 27.8% | Irrigation and toilet flushing |
3 | Harvested Rainwater (Rooftops and sidewalks) | 8,200 | 18.2% | Green areas and cleaning |
4 | Treated Wastewater (via O‘zsuvta’minot AJ) | 5,800 | 12.9% | Vehicle washing and sidewalks |
5 | Total Treated/Recycled Water | 26,500 | 58.9% | Total Sustainable Water Use |
6 | Fresh Potable Water (Municipal supply) | 18,500 | 41.1% | Drinking and cooking |
Navoi State University tracks water consumption using smart meters and a dedicated water audit team. The increasing ratio of treated water usage is a result of our automated purification systems and strategic partnership with ‘O‘zsuvta’minot AJ.
Special attention is given to wastewater generated by laboratories and specialized academic facilities. Laboratory wastewater is subject to additional monitoring and controlled disposal procedures to prevent environmental contamination and ensure compliance with health, safety, and environmental standards. University personnel regularly inspect wastewater collection points and conduct preventive maintenance activities to maintain the integrity of the campus water management system.
All domestic and sanitary wastewater generated by academic buildings, dormitories, laboratories, dining facilities, and administrative units is discharged through the municipal sewerage network and transferred to the regional wastewater treatment system operated by Navoiy Suv Ta’minoti JSC (https://uzsuv.uz/uz ). At the municipal treatment facilities, wastewater undergoes mechanical, biological, and sanitary treatment processes before being safely returned to the wider water management cycle in accordance with environmental regulations. Through this process, the University contributes to regional water recycling and water reuse efforts while ensuring that untreated wastewater is not released directly into the environment.
To maintain system effectiveness, the University conducts regular inspections of storage tanks, filtration equipment, pumping systems, and water reuse infrastructure. Water quality monitoring, preventive maintenance, and compliance assessments form an integral part of the University’s sustainability management framework. These measures help ensure operational reliability, protect public health, and support long-term environmental sustainability.
