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Water Demand in the Basin: Urban and Rural Consumption:

Vaal River Basin

   

Rand Water supplies water to the urban/industrial centre of Gauteng and other areas within the Vaal River catchment. Gauteng province has the largest population of any province in South Africa and is the economic powerhouse of South Africa. The urban demand on the main Vaal River system is shown in the table below. 

Table 1: Year 2000 urban water requirements in the Vaal River Water Management Area.

Sub-Area

Urban Population

Domestic (direct)

Indirect

Urban losses

Total

 

Urban per capita domestic

Urban return flow

Mm³/a

l/c/d

%

Upper Vaal

5 456 397

309,2

209,4

116,8

635,4

 

155

54

Middle Vaal

1 165 329

44,1

29,1

19,8

93,0

 

104

32

Lower Vaal

611 719

30,0

20,5

17,2

67,7

 

134

0

l/c/d = litres per capita, per day
Source: DWAF 2003c,d,e

The rural domestic and stock watering demands for the Upper, Middle and Lower Vaal Water Management Areas are mainly supplied from groundwater.

Table 2: Year 2000 rural water requirements in the Vaal River Water Management Area.

Sub-Area

Rural Population

Domestic

Stock watering

Total

Rural human per capita

Mm³/a

l/c/d

Upper Vaal

606 926

5,7

36,9

42,6

25

Middle Vaal

363 714

3,3

28,7

32,0

25

Lower Vaal

726 068

8,7

35,9

44,6

33

l/c/d = litres per capita, per day
Source: adapted from DWAF 2003c,d,e

 

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