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.
A powerful form of presented credibility is a glowing reference from other people who themselves have high credibility. This is often done when a known person introduces a person who is not known. Things that add to presented credibility include: 1  High qualifications, such as a PhD or degrees in multiple subjects.nlike simple trust, which is often given until a person is found untrustworthy, credibility often has to be earned, and people will look first to indicators such as achievements in education and employment, then to their first-hand experience of your presentation.