Malvern water

Malvern water is a natural spring water from the Malvern Hills on the border of the counties of Herefordshire and Worcestershire in England. The Hills consist of very hard granite and limestone rock. Fissures in the rock retain rain water, which slowly permeates through, escaping at the springs. The springs release an average of about 60 litres a minute and the flow has never been known to cease.

Beneficial properties of the water have been reported for over four hundred years, and the reason for such benefits was a topic of scholarly discussion by 1817. In the 19th century Malvern became famous for the water cure, resulting in its rapid development from a village to a busy town with many large Victorian and Edwardian hotels. The writings of the hydrotherapists James Gully and James Wilson, and well known patients who included Lord Lytton contributed to Malvern's renown at that time. The water has been bottled on an industrial scale under the Schweppes brand from 1850 until 2010, and is still bottled by a family-owned company since 2009 as Holywell Malvern Spring Water. In 2012 the Holywell Water Co Ltd was granted permission to use the world-famous "Malvern" name in its branding, thus becoming Holywell Malvern Spring Water. It has been drunk by several British monarchs.Elizabeth I drank it in public in the 16th century; Queen Victoria refused to travel without it.

The quality of Malvern water is attributable to its source. Malvern Hills are amongst the oldest and hardest rocks found in the United Kingdom, with their geology responsible for the quality of Malvern's spring water. The hills consist of Precambrian igneous and metamorphic rock, the oldest of which are about 670 million years old. The rocks are characterised by low porosity and high secondary permeability via fissures. Malvern water is rainwater and snow meltwater that percolates through fissures created by the pressures of tectonic movements about 300 million years ago when advancing sedimentary layers of Silurian shale and limestone were pushed into and under older Precambrian rock. When the fissures are saturated, a water table forms and the water emerges as springs around the fault lines between the strata. Depending on rainfall, the flow can vary from as little as 36 litres (8 gallons) per minute to over 350 litres (77 gallons) per minute. The water permeates through the rock which, because of its hardness, leaves little or no mineral traces in the water, while at the same time the very fine cracks act as a filter for other impurities. Rainfall on the Malvern Hills is thought to be sufficient to account for all the water that runs out of the springs, reflected for example in some spring flows six to eight weeks after heavy rainfall, and in reduced flows after a dry period.

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