Eutrophication Risk of Water in the Manor-Park Channels: Different Ways of Evaluation

Nutrient Pollutants in Surface Water—Assessing Trends in Drinking Water Resource Quality for a Regional City in Central Europe

“…The total volume of water used for the national economic needs and human consumption have increased the San River catchment over the years 2004-2013. In 2004, total water consumption in this hydrographic region was 199.4 hm 3 , of which 113.7 hm 3 was used for industrial purposes, 39.1 hm 3 for irrigation of agriculture and forestry and for filling and supplementing fish ponds and 46.7 hm 3 for exploitation of the water supply system [41]. In 2013, total water consumption reached 224.6 hm 3 , of which 144.8 hm 3 was used by industry.…”

“…total water consumption decreased by 1.4 hm 3 in comparison with 2004 (from 4.1 to 2.7 hm 3 ), 1.0 hm 3 less water was used for industrial purposes and 0.4 hm 3 less for water supply system exploitation. Water consumption by households was the same in both years, reaching 1.4 hm 3 [41,42].…”

“…Water consumption over the period 2004-2013 also declined in Krosno, the second largest city taking water for its residents from the Wisłok River. In 2013, the total water consumption decreased by 1.4 hm 3 in comparison with 2004 (from 4.1 to 2.7 hm 3 ), 1.0 hm 3 less water was used for industrial purposes and 0.4 hm 3 less for water supply system exploitation. Water consumption by households was the same in both years, reaching 1.4 hm 3 [41,42].…”

“…Although not all of the objectives were met, constant efforts are being made to limit the pressure on the environment by introducing numerous requirements for the protection of the environment. Much has been done to restore the purity of surface waters [2][3][4], unfortunately however, their state remains unsatisfactory, although some positive changes in the rationalization of water management are perceivable. Monitoring water quality and pollutant discharges are crucial for developing plans for watershed water management and protection against pollution through establishing the appropriate action plans and controlling their efficiency [5][6][7][8].…”

“…There are 35 municipal sewage treatment plants located in the Wisłok River catchment. The largest sewage loads are supplied by the municipal treatment plants situated in Rzeszów (184,870 people equivalent (PE), mean daily discharge 35,410 m 3 ) and in Krosno (122,806 PE, mean daily discharge 35,410 m 3 ). Industrial sewage supplied to the Wisłok catchment originates from the biological treatment plants of the Alima-Gerber Company in Rzeszów, Resmlecz Dairy Cooperative in Trzebowisko and from the mechanical-chemical sewage treatment plant of the Śrubex S.A. Screw Factory in Łańcut [43].…”