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The Hydrological Cycle
Choosing the Most Suitable Source
9 other sections not shown
abstraction licence aquifer artesian atmosphere bacteria borehole catchpit cause chamber chemicals chlorine chlorine solution clean common law concrete constructed contaminated contractor depth diameter discharge disinfect dissolved drain drainage drawdown drilling drinking water embankment evaporation farm filter flow of water foot valve gravel groundwater hard water height hole hydraulic ram hydrological cycle important installed intake land large number leaks litres material measured methane method metres millimetres overflow pipework plastic pipe pollution prevent private water supplies problems protect pumping rate pumping test qanat quantity of water rain rainfall reduce reservoir riparian river rock rotary sand septic tank sewage shown in Figure silt specific capacity spirit level spring storage tank stream sure surface water trench tube usually V-notch valve washing water abstraction water flows water quality water source water supply system water table weir yield