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Abstract This study was done in an attempt to reduce the percentage of losses in water treatment plants and networks where losses is the difference between delivered water and water sold from distribution system or the difference between supplied water from distribution system and leaves water from system to use. There are many causes for losses in water treatment plants and networks like water lost in water treatment plants due to washing filters and reservoirs, and water lost in networks due to the lack of maintenance or failure to renew ageing systems, illegal connection, metering error, or an accounting error. Data collected for this study for two governorates which namely are Damietta, Minya the data collected include types of water treatment plants, capacity, water sold, losses for each water treatment plants and for networks losses, types and diameters of pipes. The interrelationships between types of water treatment plants, capacity, water sold, losses, types and diameters of pipes were studied, graphically represented, analyzed, and discussed in order to determine the actual reasons for reducing the losses. The study concluded that;- The developed water treatment plants is more preferred than surface water treatment plants as it reduced the percentage of losses to31.33%, which is 2.5% less than that of surface water treatment plants in Damietta governorate. The artesian well water treatment plants is more preferred than Non-artesian Well water treatment plants as it reduced the percentage of losses to11.27%, where the percentage of losses are reduced in the rate of10.17% in Minya governorate. IXThis study was done in an attempt to reduce the percentage of losses in water treatment plants and networks where losses is the difference between delivered water and water sold from distribution system or the difference between supplied water from distribution system and leaves water from system to use. There are many causes for losses in water treatment plants and networks like water lost in water treatment plants due to washing filters and reservoirs, and water lost in networks due to the lack of maintenance or failure to renew ageing systems, illegal connection, metering error, or an accounting error. Data collected for this study for two governorates which namely are Damietta, Minya the data collected include types of water treatment plants, capacity, water sold, losses for each water treatment plants and for networks losses, types and diameters of pipes. The interrelationships between types of water treatment plants, capacity, water sold, losses, types and diameters of pipes were studied, graphically represented, analyzed, and discussed in order to determine the actual reasons for reducing the losses. The study concluded that;- The developed water treatment plants is more preferred than surface water treatment plants as it reduced the percentage of losses to31.33%, which is 2.5% less than that of surface water treatment plants in Damietta governorate. The artesian well water treatment plants is more preferred than Non-artesian Well water treatment plants as it reduced the percentage of losses to11.27%, where the percentage of losses are reduced in the rate of10.17% in Minya governorate. IXThis study was done in an attempt to reduce the percentage of losses in water treatment plants and networks where losses is the difference between delivered water and water sold from distribution system or the difference between supplied water from distribution system and leaves water from system to use. There are many causes for losses in water treatment plants and networks like water lost in water treatment plants due to washing filters and reservoirs, and water lost in networks due to the lack of maintenance or failure to renew ageing systems, illegal connection, metering error, or an accounting error. Data collected for this study for two governorates which namely are Damietta, Minya the data collected include types of water treatment plants, capacity, water sold, losses for each water treatment plants and for networks losses, types and diameters of pipes. The interrelationships between types of water treatment plants, capacity, water sold, losses, types and diameters of pipes were studied, graphically represented, analyzed, and discussed in order to determine the actual reasons for reducing the losses. The study concluded that;- The developed water treatment plants is more preferred than surface water treatment plants as it reduced the percentage of losses to31.33%, which is 2.5% less than that of surface water treatment plants in Damietta governorate. The artesian well water treatment plants is more preferred than Non-artesian Well water treatment plants as it reduced the percentage of losses to11.27%, where the percentage of losses are reduced in the rate of10.17% in Minya governorate. IXThis study was done in an attempt to reduce the percentage of losses in water treatment plants and networks where losses is the difference between delivered water and water sold from distribution system or the difference between supplied water from distribution system and leaves water from system to use. There are many causes for losses in water treatment plants and networks like water lost in water treatment plants due to washing filters and reservoirs, and water lost in networks due to the lack of maintenance or failure to renew ageing systems, illegal connection, metering error, or an accounting error. Data collected for this study for two governorates which namely are Damietta, Minya the data collected include types of water treatment plants, capacity, water sold, losses for each water treatment plants and for networks losses, types and diameters of pipes. The interrelationships between types of water treatment plants, capacity, water sold, losses, types and diameters of pipes were studied, graphically represented, analyzed, and discussed in order to determine the actual reasons for reducing the losses. The study concluded that;- The developed water treatment plants is more preferred than surface water treatment plants as it reduced the percentage of losses to31.33%, which is 2.5% less than that of surface water treatment plants in Damietta governorate. The artesian well water treatment plants is more preferred than Non-artesian Well water treatment plants as it reduced the percentage of losses to11.27%, where the percentage of losses are reduced in the rate of10.17% in Minya governorate. IX The percentage of losses decrease with increasing the percentage of PVC, Cast-iron and GRP pipe lengths to the total lengths of all pipes. The percentage of losses increase with increasing the percentage of asbestos and steel pipe lengths to the total. |