A Toolkit for Assessing Willingness to Pay ... - WaterWiki.net

32 CHAPTER 5 WILLINGNESS TO PAY
Figure 5.12:
Preferred strategy concerning water services and water charges
Note: The data is weighted by the age and gender distribution of the Poznan urban region, census 1996.
Reasons given for not improving water quality and increasing water charges are e.g. that consumers
find that charges are already too high (24 %), and that the consumers find that they are not able to
pay more (16 %).
Stated preference analysis
The stated preference analysis is exploring both the willingness to pay for improvements and the
willingness to pay to avoid worsening. Factors included in the analysis are:
• Interruptions;
• Colour;
• Smell.
The purpose of the analysis is to find the willingness to pay for improvements or to avoid a worsening
of these factors.
Unplanned interruptions are included because a lack of investment might imply an increasing number
of interruptions and therefore it is relevant to assess the willingness to pay to avoid interruptions.
However, it should be noted that the average age of water supply pipes is reasonably young and
current level of interruptions is better than most cities in the region.
Two possible changes in the frequency of interruptions are included in the analysis:
• Monthly unplanned interruptions;
• No unplanned interruptions at all.