The purpose of this study is to determine the physico-chemical properties (temperature, pH, dissolved oxygen, electrical conductivity, suspended solid, nitrite nitrogen, nitrate nitrogen, orthophosphate and sulphate) within the water quality of 8 different streams flowing into the South eastern Black Sea coast. The water samples were collected monthly from April 2016 to March 2017 at a specified point at which the Melet, Aksu, Degirmendere, iyidere, Salarha, Buyiikdere, Firtma and Hopa streams flow into the sea. The physical parameters of the water samples were measured using a portable multi water quality meter (HQ40D), and analysed the chemical parameters using a spectrophotometer (HACH-LANGE-DR3900). The Gravimetric method was used to obtain suspended solids matter (SPM). The analysis results were compared with national and international quality standards and regulations for drinking as well as non-drinkable water. The annual means of parameters for all streams featured in this study were 14.22 +/- 0.525 (4-26.1) degrees C in terms of temperature, 7.62 +/- 0.059(6.1-9.1) in terms of pH, 158.63 +/- 8.837 (40-420) S/cm in terms of electrical conductivity, and 10.38 +/- 0.132 (7.29-14.63) mg/L in terms of dissolved oxygen. On the other hand, the amount of suspended solid matter (SPM) was 68.36 +/- 8.791 (0.3-604.1) mg/L, nitrite nitrogen was 0.016 +/- 0.005 (0.001-0.53) mg NO2N/L, nitrate nitrogen was 0.340 +/- 0.026 (0-1.5) mg NO3-N/L, orthophosphate phosphorus levels were 0.388 +/- 0.064 (0.02-4.29) mg o-PO4-P/L, and the level of sulphate concentration was 10.458 +/- 0.949 (0-48) mg SO4/L. When the findings are evaluated according to national and international standards, all of the streams have a Class I water quality standard according to other parameters with the exception of orthophosphate phosphorus. For orthophosphate phosphorus levels, the Degirmendere and iyidere streams were determined to be Class IV, whilst the remaining streams were determined to be Class II in terms of water quality.
