Recording flows in the Physical Supply-Use Tables:
Cola City, Cow Town and Capital Harbor
Technical Workshop on the
Preparation of Water Accounts in Latin America
1-4 June 2009
Santiago, Chile
Michael Vardon
United Nations Statistics Division
Outline
3 cities
• Cola City
• Cow Town
• Capital Harbor
For Cola we have a diagram of flows as well as
completed supply and use tables
For Cow Town and Capital Harbor we have a
diagram and need to populate the supply and use
tables
Cow Town
Cola City
Soda River
Capital
Harbor
Cola City
• A city with only one water source – the
Soda River
• A simple economy
• Soft drink manufacture (ISIC 11)
• Electricity (ISIC 35)
• Water supply (ISIC 36)
• Sewerage (ISIC 37)
• Transport (ISIC 49)
• Households
Only households in city
16
Sewerage Treatment
ISIC 37
Cola City
6
Transport
ISIC 49
26
5
Losses 4
4
4
Losses 1
Losses 14
62
Water Supply Industry
ISIC 36
6
Soft Drink Production
ISIC 11
30
48
24
Hydro-Electricity production
ISIC 35
2
100
1
150
149
Soda River
5
Cola City – Physical use table
Physical use table
Industries (by ISIC categories)
11
U1 - Total abstraction (=a.1+a.2=
a.1- Abstraction for own use
a.2- Abstraction for distribution
b.1- From water resources:
From the
Surface water
environmen
Groundwater
t
Soil water
b.2- From other sources
Collection of precipitation
Abstraction from the sea
Within the U2 - Use of water received from other
economic units
economy
of which : Wastewater to sewerage
U=U1+U2 - Total use of water
48
48
35
36
150 100
150
1
99
37
150
100
2
0
26
100
26
26
152
49 Total
4
80
4
26
330
Household
s
Total
Physical units
6
6
256
157
99
6
256
26
106
32
26
362
Cola City – Physical supply table
Physical supply table
Industries (by ISIC categories)
S1 - Supply of water to other economic
of which : Reused water
Wastewater to sewerage
S2 - Total returns (= d.1+d.2)
d.1- To water resources
To the
Surface water
environme
Groundwater
nt
Soil water
d.2- To other sources (e.g. Sea water)
S - Total supply of water (= S1+S2)
Consumption (U - S)
Within the
economy
11
6
35
36
0
80
Househol
ds
Total
Physical units
37
0
49 Total
4
90
16
106
6
5
0
149
0
20
0
24
4
0
10
198
16
0
26
198
5
149
20
24
0
198
0
198
11
37
149
3
100
0
24
2
4
0
288
42
16
16
304
58
United Nations:
Assumes all losses are returned to surface water resources. Includes losses
of 19 (1+4+14) + 1 direct return
Cola City – Physical supply-use table
Physical use table
Industries (by ISIC categories)
11
35
36
U1 - Total abstraction (=a.1+a.2=
150 100
a.1- Abstraction for own use
150
1
a.2- Abstraction for distribution
99
b.1- From water resources:
From the
Surface water
150 100
environmen
Groundwater
t
Soil water
b.2- From other sources
Collection of precipitation
Abstraction from the sea
Within the U2 - Use of water received from other
economic units
48
2
0
economy
of which : Wastewater to sewerage
U=U1+U2 - Total use of water
48 152 100
Physical supply table
37
49 Total
Household
s
Total
Physical units
6
6
256
157
99
6
256
26
4
80
26
106
26
26
4
26
330
32
26
362
S1 - Supply of water to other economic
Within the
of which : Reused water
economy
Wastewater to sewerage
S2 - Total returns (= d.1+d.2)
d.1- To water resources
To the
Surface water
environmen
Groundwater
t
Soil water
d.2- To other sources (e.g. Sea water)
S - Total supply of water (= S1+S2)
Consumption (U - S)
11
6
35
0
36
80
37
0
49 Total
4
90
Household
s
Total
Physical units
Industries (by ISIC categories)
16
106
6
5
0
149
0
20
0
24
4
0
10
198
16
0
26
198
5
149
20
24
0
198
0
198
11
37
149
3
100
0
24
2
4
0
288
42
16
16
304
58
Cow Town
(Upstream of Cola City)
• A city with two water sources
• The Soda River (Surface water)
• Ground water
• The economy
• Agriculture (ISIC 01)
• Food manufacturing (ISIC 10)
• Electricity (ISIC 35)
• Water supply (ISIC 36)
• Sewerage (ISIC 37)
• Transport (ISIC 49)
• Households
Manufacture of Food
ISIC 10
20
4
Electricity production
ISIC 35
18
3
2
24
35
Losses 6
240
30
Water Supply
Industry
ISIC 36
5
3
Transport
ISIC 49
2
Losses 1
25
Water Supply
Industry
ISIC 36
Losses 11
1
14
200
Cow Town
Households
10
Losses 80
120
2
Ground water
20
30
Agriculture
ISIC 01
6
Agriculture
ISIC 01
5
5
60
Ground water
4
Sewerage Treatment
ISIC 37
5
Cow Town – Physical use table
Industries (by ISIC categories)
1
85
85
0
10
4
4
0
35
36
20
275
20
15
0
260
37
0
0
0
49
0
0
0
25
60
0
4
0
0
20
0
0
275
0
0
0
0
0
0
0
0
the sea
U2 - Abstraction
Use of waterfrom
received
from other
125
Within the economic units
of which : Reuse
5
economy
24
2
0
11
2
0
28
0
22
0
275
11
11
0
2
U1 - Total abstraction (=a.1+a.2=
a.1- Abstraction for own use
a.2- Abstraction for distribution
b.1- From water resources:
Surface water
From the
Groundwater
environme
Soil water
nt
b.2- From other sources
Total
384
124
260
0
324
60
0
Househ
olds
Total
Physical units
2
2
0
0
2
0
386
126
260
0
324
62
0
14
178
16
11
564
Collection of precipitation
of which : Wastewater to sewerage
U - Total use of water (=U1+U2 )
210
164
5
11
548
Cow Town – Physical supply table
1
Within the
economy
S1 - Supply of water to other economic
of which : Reuse
of which : Wastewater to sewerage
4
0
4
30
10
0
0
0
3
35
36
0
162
0
0
0
0
18 113
37
5
5
0
5
49 Total
1
172
0
5
1
5
0
169
6
0
6
S2 - Total returns (= d.1+d.2)
d.1- To water resources
To the
Surface water
30
3
18 113
5
169
0
environme
Groundwater
United Nations:
nt
Soil water
Assumes all losses are returned to surface water resources.
d.2- To other sources (e.g. Sea water)
Includes losses of 98 (1+6+11+80) + 10 + 5 direct returns
S - Total supply of water (= S1+S2)
34
3
18 275 10
1
341
6
Consumption (U - S)
176 25
4
0
1
1
207 10
Total
Industries (by ISIC categories)
Households
Physical units
178
5
11
169
169
347
217
Capital Harbor
• Downstream from Cow Town and Cola City
• A sophisticate scenic city with a ‘booming’ economy:
• Manufacture (ISIC 10-32)
• Water supply (ISIC 36)
• Sewerage (ISIC 37)
• Water Transport (ISIC 50)
• Accommodation and food service (55-56)
• Computer programming (ISIC 62)
• Public administration (ISIC 84)
• Households
6
Desalinised water
Manufacturing ISIC 10-32
10
20
Sewerage Treatment
ISIC 37
69
1
2
Water Supply
Industry
ISIC 36
Computer programming
ISIC 62
10
16
Rain
5
25
2
Water transport
ISIC 50
3
Households
110
2
40
Public Administration
ISIC 84
Accommodation and food service
ISIC 55-56
1
3
12
Water Supply
Industry
ISIC 36
6
Sewerage Treatment
ISIC 37
15
Rain
2
Capital Harbor Households
8
12
Capital Harbor – Physical use table
U1 - Total abstraction (=a.1+a.2=
a.1- Abstraction for own use
a.2- Abstraction for distribution
b.1- From water resources:
From the
Surface water
environme
Groundwater
nt
Soil water
b.2- From other sources
Collection of precipitation
Abstraction from the sea
Within the U2 - Use of water received from other
economy economic units
of which : Wastewater to sewerage
U=U1+U2 - Total use of water
10 to
1
32
0
6
35
36
0
150
37
0
50 55-56
0
0
62
0
84 Total
0
156
150
150
150
150
150
4
4
6
31
166
35
46
326
6
69
46
75
46
46
0
160
150
6
0
4
Total
Industries (by ISIC categories)
Households
Physical units
150
3
3
12
12
2
2
3
3
135
291
Capital Harbor – Physical supply table
Industries (by ISIC categories)
S1 - Supply of water to other economic
of which : Reused water
Wastewater to sewerage
S2 - Total returns (= d.1+d.2)
d.1- To water resources
To the
Surface water
environme
Groundwater
nt
Soil water
d.2- To other sources (e.g. Sea water)
S - Total supply of water (= S1+S2)
Consumption (U - S)
Within the
economy
10 to
1
32
0
20
0
0
35
36
0
120
20
15
30
5
30
10
35
40
37
0
50 55-56
0
6
6
0
0
150
0
37
62
1
84 Total
1
148
1
1
2
United Nations:
Assumes all losses are
returned to surface water
resources.
37
37
9
2
2
1
6
6
1
1
1
2
Househol
ds
Total
Physical units
18
166
28
84
18
0
46
84
35
0
35
49
232
59
0
18
17
49
250
76