No sample survey is useful until the results are promptly and unbiasedly communicated to the intended audience. A carefully conducted probability survey can be negated by how a report is written. Reports of a public opinion poll may re-phrase the question asked on the questionnaire, giving readers a different impression of the question's meaning. Results may be reported as percentages and not actual values, giving the impression that a problem is a minor issue rather than impacting millions of people. Graphs may be constructed to emphasize a particular point of view.
Similar issues arise with aquatic monitoring.