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Speaking about Great Britain the main risks of land pollution lie in the indiscriminate dumping of materials on land, careless disposal of pesticides and chemicals, fall-out of materials from the atmosphere and the deposition of materials from flood-water. The use of sewage sludge on farms, too, involves risks as well as benefits to the land. Industry already makes considerable use of reclaimed waste materials such as metals, paper and textiles. In an increasing number of areas there are "bottlebanks" where the public can deposit used glass containers. There has been a steady and significant improvement in water quality: the level of pollution in the tidal Thames has been reduced to a quarter and 100 different kinds of fish have been identified. The Control of Pollution Act, which applies to England, Scotland and Wales, sets out a wide range of powers: including control over wastes, air and water pollution and noise.