76
5 Sequity (Sustainable Equity)
5.2 Segments
Figure 5.1 has 15 segments, which are about water allocations, and sometimes with
correspondence to classes of population, such as poor, marginalized, or wealthy
people. Here, we define a segment as all the possible water arrangements that fall
within the union of a category of M1 and another of M2. Consequently, segmentation
dramatically reduces the high diversity inherent in all the possible combinations of
M1 and M2 by focussing our attention in one segment. However, there are still
differences between various systems of a segment but they are within the confines
of purposely-defined thresholds with specific societal objectives. Of course, water
managers can have further division of a segment if it improves transparency and fair
decision-making.
Segment (Sg) notation is by the row (along M2) and column (along M1) using the
category codes 1 to 5 indicated in Fig. 5.1. For example, Sg23 is the rectangle with
point B as its upper left vertex, i.e., M1 in Water Wise category and M2 in Water
Poverty. Table 5.2 shows the 15 segments and their categories, and Table 5.3 gives
the distribution of the categories for each member.
Table 5.3 gives the inherent distribution of all levels of allocation without regulation. It shows that the share of water poverty (= Extreme Water Poverty + Water
Poverty) and water abundance (= Extreme Water Abundance + Water Abundance)
for M1 and M2 is inversed, meaning that water poverty for M1 is 20%, and for
M2 60%, while water abundance is 60% for M1 and 20% for M2. Consequently,
to promote Water Wise systems, i.e., achieving the most equitable and sustainable
Table 5.2 Segments and their corresponding water categories
Sg
M1 category
M2 category
11
Extreme Water Poverty
Extreme Water Poverty
12
Water Poverty
Extreme Water Poverty
13
Water Wise
Extreme Water Poverty
14
Water Abundance
Extreme Water Poverty
15
Extreme Water Abundance
Extreme Water Poverty
22
Water Poverty
Water Poverty
23
Water Wise
Water Poverty
24
Water Abundance
Water Poverty
25
Extreme Water Abundance
Water Poverty
33
Water Wise
Water Wise
34
Water Abundance
Water Wise
35
Extreme Water Abundance
Water Wise
44
Water Abundance
Water Abundance
45
Extreme Water Abundance
Water Abundance
55
Extreme Water Abundance
Extreme Water Abundance
5 Sequity (Sustainable Equity)
5.2 Segments
Figure 5.1 has 15 segments, which are about water allocations, and sometimes with
correspondence to classes of population, such as poor, marginalized, or wealthy
people. Here, we define a segment as all the possible water arrangements that fall
within the union of a category of M1 and another of M2. Consequently, segmentation
dramatically reduces the high diversity inherent in all the possible combinations of
M1 and M2 by focussing our attention in one segment. However, there are still
differences between various systems of a segment but they are within the confines
of purposely-defined thresholds with specific societal objectives. Of course, water
managers can have further division of a segment if it improves transparency and fair
decision-making.
Segment (Sg) notation is by the row (along M2) and column (along M1) using the
category codes 1 to 5 indicated in Fig. 5.1. For example, Sg23 is the rectangle with
point B as its upper left vertex, i.e., M1 in Water Wise category and M2 in Water
Poverty. Table 5.2 shows the 15 segments and their categories, and Table 5.3 gives
the distribution of the categories for each member.
Table 5.3 gives the inherent distribution of all levels of allocation without regulation. It shows that the share of water poverty (= Extreme Water Poverty + Water
Poverty) and water abundance (= Extreme Water Abundance + Water Abundance)
for M1 and M2 is inversed, meaning that water poverty for M1 is 20%, and for
M2 60%, while water abundance is 60% for M1 and 20% for M2. Consequently,
to promote Water Wise systems, i.e., achieving the most equitable and sustainable
Table 5.2 Segments and their corresponding water categories
Sg
M1 category
M2 category
11
Extreme Water Poverty
Extreme Water Poverty
12
Water Poverty
Extreme Water Poverty
13
Water Wise
Extreme Water Poverty
14
Water Abundance
Extreme Water Poverty
15
Extreme Water Abundance
Extreme Water Poverty
22
Water Poverty
Water Poverty
23
Water Wise
Water Poverty
24
Water Abundance
Water Poverty
25
Extreme Water Abundance
Water Poverty
33
Water Wise
Water Wise
34
Water Abundance
Water Wise
35
Extreme Water Abundance
Water Wise
44
Water Abundance
Water Abundance
45
Extreme Water Abundance
Water Abundance
55
Extreme Water Abundance
Extreme Water Abundance