Sources Malvern water

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the spout @ st ann s well.



the quality of malvern water attributable source. malvern hills amongst oldest , hardest rocks found in united kingdom, geology responsible quality of malvern s spring water. hills consist of precambrian igneous , metamorphic rock, oldest of 670 million years old. rocks characterised low porosity , high secondary permeability via fissures. malvern water rainwater , snow meltwater percolates through fissures created pressures of tectonic movements 300 million years ago when advancing sedimentary layers of silurian shale , limestone pushed , under older precambrian rock. when fissures saturated, water table forms , water emerges springs around fault lines between strata. depending on rainfall, flow can vary little 36 litres (8 gallons) per minute on 350 litres (77 gallons) per minute. water permeates through rock which, because of hardness, leaves little or no mineral traces in water, while @ same time fine cracks act filter other impurities. rainfall on malvern hills thought sufficient account water runs out of springs, reflected example in spring flows 6 8 weeks after heavy rainfall, , in reduced flows after dry period.









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