From the value calculated from the formula of the CI site site 1 to 4 was found to have CI = 75.54, 75.62, 73.36 and 73.51, respectively. When compared to the table of Class level classification is equal to I-II water or water quality range of 73.83 points, which is clean and has a value of 5 site CI = 73-83 in Class II or score 56-73, where water quality is relatively clean. When considering the Chemical Index (CI) of each parameter oxygen values was found to affect most of the CI value changes made to site 2 at highest O2 as a result, most CI value and the minimum value is 5 O2 site has the lowest value of CI as well. In the section of the site to site 1 showed WQI 5 WQI values equal to 74.17, 77.78, 77.22, 73.33 and 73.22, respectively. When the water is going to be the Class level classification is equal to level II or a range of 71-90 points, which is a good level of water quality (Good) all compared to water quality WQI values with CI is characteristic of similar water quality. But there are differences in site 5 of CI values with different WQI is fairly clean (quite good), and d respectively, which showed that the water quality class from the CI information is somewhat split over the WQI CI all Class 7 is divided, while the WQI has been split and Class 5 water level for each Index value of parameter of the WQI CI over resolution and thus cause different index values, so from the reviews thought the CI is a scorecard, water quality WQI better.
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