Résumé : |
The Water Authority's service to industry can be summed up fairly briefly ; it provides a supply of water for manufacturing processes and also for personal use by the workforce and subsequently arranges for its collection and suitable disposal after use together with a controlled level of added contamination. That is a simplified picture but, clearly, the reality is rather more complicated and one can anticipate a few questions.
On the supply side, which can be from the mains or a river or both, what is the quality ? What is the cost ? What is the reliability ? Also, on the disposal side, what are the conditions and what is the cost ? These are some of the matters on which I will try to provide information.
In order to make the main services available the authority must also attend to other responsibilities which constitute an important part of the overall service. These include the protection of surface and underground resources, i.e. reservoirs, rivers and streams, estuaries and tidal waters. It must also control some of these resources, to some extent, to avoid flooding and to supplement river flow during dry spells. In undertaking its multiple roles the water authority must operate within a tangle of legislation and other constraints as illustrated in Fig. 1.
A paper which I presented to the Northampton Group in 1976 dealt with the disposal of tannery wastes in relation to a Wather Authority's requirements. That paper explained why various conditions needed to be imposed and also provided some suggestions on how to meet those requirements. A second paper to the SCI explained the much wider role of the Water Authority. Much of what I said then remains relevant today but, since the publications are readily available for anyone still wishing to obtain the wider view, it would be wasteful now to go over the same ground.
During the ensuing nine years there have been quite a few changes, for example, more legislation, bulk transfers of water and alterations in the methods of charging customers. The objects of the present paper is to consider these changes in relation to their impact upon industry. |