2.3.4. Salience

Drawing from Stewart's (2009) salience framework, we measured attention by asking how often respondents noticed unacceptable changes in their tap water in terms of taste, smell, and appearance (1 = *Never* to 5 = *Extremely often*) and unacceptable changes in their tap water in general (1 = *Never* to 4 = *Often*) [31]. We measured knowledge of water topics by asking the residents the amount of information they could provide to a friend or family about their neighborhood water quality (1 = *No information* to 5 = *A great deal of information*).

### 2.3.5. Tap Water Quality Evaluations

Tap water quality evaluations were measured on a 5-point Likert-type scale of acceptability. Respondents rated how acceptable their water was overall and in specific terms of taste, smell, appearance, and safety (1 = *Not acceptable* to 5 = *Completely acceptable)*.
