Footage of reservoir being built in Chingford, Greater London.
Several L/Ss of the River Thames. Various good interior shots of large water pumps at work in Metropolitan Water Board building. More shots of the Thames. L/S of Metropolitan building. Man takes sample of water from the river. He puts it in bottle and shakes it. L/S of man pulling weeds out of banks of reservoir. L/Ss of large reservoirs dried out due to hot weather. L/S of dead fish floating onto the surface. M/Ss of filter beds. Several shots of machinery digging new reservoir in Chingford.