The Thames Water Authority has commissioned a new launch to monitor pollution in the River Thames at London.
GV River Thames Tower Bridge.
GV Pollution control boat. (3 shots)
GV Palace of Westminster PAN TO River Thames.
SV INT. Woman technician analysing water.
CU PAN Pipe sucking water samples from Thames into boat.
CU Bottle filled with Thames water.
SV Woman technician analysing water samples.
SV From boat's deck.
GV Further analysis of water by technician. (7 shots)
SCU Adding acid to and experiment. (2 shots)
CU Samples in bottles. (2 shots)
SV & GV Boat cruises past H.M.S. Belfast - moored off Tower Bridge. (2 shots)
Initials VS 15.20 VS 15.40
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Background: The Thames Water Authority has commissioned a new launch to monitor pollution in the River Thames at London.
The "Thameswater" began operations in June and has a vital role to play in the Authority's programme to clean up the river.
Already the programme has helped achieve some major successes; since 1964 the River Thames has become steadily cleaner. And from that time eighty-three different species of fish have been recorded. Salmon and rainbow trout have also been caught.
The Authority says that the river is now so clean in comparison with what it was once like, that typhoid inoculations are no longer required when people fall in.
And the "Thameswater" does not add to the pollution either. The launch is designed to prevent oil spillage, and sanitary waste is not dumped -- unlike normal practice.
The launch is equipped with radar and an echo-sounder for measuring depth of water. Scientists and technicians on board make four basic tests to measure pollution -- including the amount of oxygen in the water.
The main problem for London's river highway -- and the reason it will never be completely clean -- is the amount of sewage passing into it.
But a re-designing of sewage works and flow is helping to reduce pollution levels even further. So far, 1975 has been declared the cleanest year on record for the waters of London's river artery since monitoring began in 1893.