Table 1

Single Binary Choice Question Attributes and Levels

AttributeDefinitionLevelsa
BWA smallAnnual number of boil water advisories in small communities with less than 500 residents5, 15, 25, 50
BWA mediumAnnual number of boil water advisories in medium-sized communities with between 500 and 50,000 residents1, 2, 3, 4
BWA largeAnnual number of boil water advisories in large communities with more than 50,000 residents0, 1
Treatment methodMethod used to improve reliabilityDrinking water treatment system, watershed and forest management
Tax amountAnnual increase in provincial income tax for 10 years0, 10, 50, 125, 250
  • Note: BWA, boil water advisory.

  • a Bolded text denotes the current situation level. The method to improve reliability for the current situation was described as the current system.