ASHWAY GAP FILTER HOUSE

 

Filter plant when new 1912

ASHWAY GAP FILTER HOUSE in 1912. Note Ashway Gap House in background

The filtration of water in the Greenfield, Dovestones and Chew valleys is more difficult than many other sources. Not only does it have to provide clean, wholesome water but that water has to be free of discolouration and excess acidity. A big problem in this valley is the peaty water. All the water entering the reservoirs has a lot of suspended peat within it, which gives it a chocolate brownish colour and even it was safe to drink after filtration nobody would be happy with the colour of the water.  Combating this at Ashway Gap Filter House were various mechanical filters and also some that required the use of chemicals to consolidate the peat and bring the acidity to neutral. Much of this is described in the attached booklet.

 

 

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Rear view of filter house

 

demolished-filter-house

Demolition around 1990

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Demolition – note the reduced water level of Dove Stone reservoir

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Filter House in 1986

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Showing the plinth where the filter house once stood. Photo – 2016 Note also the tree growth.

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