The application of Canadian water quality index (CWQI) model for the assessment of water quality of Aksu creek [Aksu çayi su kalitesinin belirlenmesinde Kanada su kalitesi indeks (CWQI) modelinin uygulanmas]

Water quality is an important factor effecting health and safety of all living. with growing population and emerging technologies,the concern about the sustainability of water quality is increasing day by day. the concerns about water quality issues are increasing day by day with growing population and technological development. thus,determination and assessment of parameters effecting water quality is important. for this purpose,water quality index (wqi) which can be calculated easily as a single number can be used. in this study,the water quality data obtained from 3 sampling stations during one year monitoring period at aksu creek,one of the main drinking water resource of giresun province,was evaluated. the analysis of 36 water quality parameters was done for all water samples at water analysis laboratory of general directorate of state hydraulic works (dsi) in trabzon. in conclusion,it was found that do,t. coli,e. coli and phenol values which exceed the limit values given in the water quality standards are the major pollutants that affect the water quality. by the way; color,turbidity,ammonia nitrogen,manganese,iron,aluminum,mercury and surfactant values also exceeded the limit values at some points. canadian water quality index (cwqi) was used for the comprehensible expression and interpretation of the data. when the calculated index values were compared with the measured water quality data,it was seen that index values are radical. the categories of index model for all stations were found as poor category.