Temporal variation of nitrate, chlorine and pH values in surface waters

In this study, eight different surface water resources located in five villages of Gölcük, Kocaeli, were tested between June 1999 and 2000 to determine the NO3-N, Cl- and pH values. Temporal variation in these parameters reflects changes in precipitation. The test results showed that the NO3-N, Cl-and pH levels varied between 0.65-0.11 mgL-1, 0.54-0.04 mgL-1 and 8.33-5.15, respectively. Data showed a strong relationship between NO3-N, Cl-and pH concentrations and amount of precipitation. Based on this fact, water quality of these surface water resources were also examined