DEMONSTRATION ACTIVITIES - Xai-Xai IDP
7.4.3 Benefits and Risks The benefits are as follows:
Provision of a sound properly designed and constructed water supply system to all the stands at Praia Velha;
This new system is designed as the first phase of a totally new and safe water supply system, and the high pressure pipes are designed to connect to the new system in the future; and
Provision of the system will generate income from connections, rates and payment for water consumed.
The risks, if not done, are as follows:
Water supply will have to be from individual boreholes. This could be costly and there is the risk of pollution;
No income would accrue from the sale of water, etc.; and
The offered benefit of a kick-start to the provision of a proper water supply system using funding made available under this programme would be lost.
7.4.4 Sustainability and Environmental Impact
At present, collection of income from water supply would appear to be on the low side and does not provide an economic base to maintain and upgrade the system, nor to finance inputs, such as electricity costs for pumping, etc.
Provision of a proper water supply system would provide a big increase to the rates base, if stands are taxed from the outset and this income plus revenue from the sale of water and provision of connections could be an essential component for sustainable development of the infrastructure for Xai-Xai Beach.
Provision of such a water supply scheme would have only positive impacts on the environment in that the system would make it unnecessary to install lots of individual boreholes with the attendant problems of pollution; also, problems are possible associated with drawing down the water table in sandy areas causing settlement/foundation problems, etc.
Therefore, construction of a new water supply system to Praia Velha is recommended as a first phase in the provision of a better safer water supply system to the coastal area of Xai-Xai Beach (see Table 24 below).
7.4.5 Cost Estimates
Water Supply Phase I
3.1 3.2 3.3 3.4
Construction of new well no. 1 Construction of pumping mains Construction of new reservoir
Construction of new supply and distribution mains
10 000 USD 10 000 USD 100 000 USD 40 000 USD
Pre-financed by bank loan, recovered from concessionaires and other users
Water company with contractors
160 000 USD