SUMMARY
Turkiye’s water resources are getting increasingly polluted and the need for per capita water is increasing rapidly from year to year with population growth. With the increasing population, the increase in the need for food, the increase in water consumption, and the reuse of wastewater in various fields, especially as irrigation water, by treating it with appropriate methods, come to the fore today.The sewage waters of the city of Kirklareli are treated in the existing domestic and industrial treatment plants and discharged into the Kirklareli stream. This study was carried out in order to determine the irrigation water quality and pollution status of the waters released from the waters of the creek and treatment plants and to reveal their suitability for agricultural use. Waste water samples taken from stations determined on Kirklareli Stream were taken seasonally. Physical and inorganic-chemical parameters were investigated. The results from the study was determined according to the Classes of Inland Surface Water Resources (KYSKK) in the Water Pollution Control Regulation. Accordingly; In terms of physical and inorganic-chemical parameters of Kirklareli stream water samples, it is seasonally classified as IV. class has been determined. It has been determined to be in the C3S1 class according to the US Salinity Laboratory Classification system based on electrical conductivity (EC) and sodium adsorption rate (SAR) values. According to the results obtained, it has been determined that it should be used with caution due to its excessive salt content. Analysis of variance, one-way analysis of variance (ANOVA) and correlation analysis were performed in a repeated measurement experiment on the measurement values of water samples. Significant differences and relationships between parameters were determined statistically.