Sustainability Scores. Fifteen sites were included in the sustainability score analysis. Table 6 shows descriptive characteristics about each site. The majority of plants are rural, and all but one has a population below 5,000. The plants have been in existence for between 1.5 and 6 years. In most communities, less than 5% of the residents are without piped water into their homes, but one town had greater than 50% without piped water. Between 0% and 4.8% of residents in each community do not have access to piped water, sewage, nor electricity in their homes, indicating that relatively few have no access to public services, but there are some residents that do not. Table 6: Descriptive Information About Each Site Visited in the Yucatán Peninsula Site A B C D E F G H I J K L M N P Urban/ Rural Urban Rural Rural Rural Rural Rural Rural Urban Rural Rural Urban Rural Rural Rural Rural Population 21167 1 3531 931 0000 0000 0000 3000 4767 1300 1800 . 2662 649 564 965 Year Plant in Existence 3 2 1.5 1.5 5.5 6 5 5 3 3.5 6 5 3 2.5 1.5 Type of Technology* ROS+ Ozone ROS+ UV ROS+ Ozone ROS+ UV ROS+ UV ROS+ Ozone ROS+ Ozone ROS+ Ozone ROS+ UV ROS+ UV ROS+ Ozone ROS+ Ozone ROS+ Ozone ROS+ Ozone ROS+ UV Percent of houses without piped water 2.8% 3.0% 16.9% 8.4% 52.8% 0.5% 3.4% 4.8% 17.8% 4.2% . 9.6% 2.3% 2.4% 2.5% Percent of inhabited houses with no piped water, sewage, nor electricity 0.2% 0.1% 4.8% 0.0% 0.5% 0.0% 0.5% 1.1% 3.8% 1.9% . 1.2% 0.0% 0.0% 0.8% *ROS = Reverse Osmosis and Softening. All sites have ROS, but Sites A, G, J, and P may have the incorrect disinfection method listed. **Source: INEGI (2005). For sites I and J, INEGI (2005) says that the population was 983 and 886 respectively, but the staff at the plant estimated the numbers in the table. Based on site visits, the plant's estimate was considered to be more accurate for analysis, which is plausible since 5 years had passed since the 2005 census, and population is increasing in the region overall. Site K was evidently urban, but the population was unknown. The results of the sustainability score analysis are presented in Table 7. Charts 1 and 2 graphically show the overall sustainability scores and the domain-specific scores. Charts 3 and 4 show box plots and the distributions of each subcategory score as well as each site’s score. Both the average and median score across all sites was 2.9 (n=15), which is above the threshold set for sustainability with reservations (2.5), but below the threshold set for sustainability withou...
