Determination of fluid category 2. Water in fluid category 1 whose aesthetic quality is impaired owing to: 1  a change in its temperature; or. 2  the presence of substances or organisms causing a change in its taste, odour or appearance, including water in a hot water distribution system.
Credibility is defined as the quality or power of inspiring belief. Credible sources, therefore, must be reliable sources that provide information that one can believe to be true. It is important to use credible sources in an academic research paper because your audience will expect you to have backed up your assertions with credible evidence.
Evaluate the quality and credibility of your sources. Not all information is created equal. Just because you find information at the library does not guarantee that it is accurate or good research. In an academic setting, being able to critically evaluate information is necessary in order to conduct quality research. Each item you find must be evaluated to determine its quality and credibility in order to best support your research.