Luxhay Reservoir is an artificial

reservoir A reservoir (; from French ''réservoir'' ) is an enlarged lake behind a dam. Such a dam may be either artificial, built to store fresh water or it may be a natural formation. Reservoirs can be created in a number of ways, including contro ...

near Angersleigh,

Somerset ( en, All The People of Somerset) , locator_map = , coordinates = , region = South West England , established_date = Ancient , established_by = , preceded_by = , origin = , lord_lieutenant_office =Lord Lieutenant of Somerset , lord_ ...

, England. It is now owned by

Wessex Water Wessex Water Services Limited, known as Wessex Water, is a water supply and sewerage utility company serving an area of South West England, covering 10,000 square kilometres including Bristol, most of Dorset, Somerset and Wiltshire and parts of ...

. It was built in 1905 by the town corporation to provide drinking water for

Taunton Taunton () is the county town of Somerset, England, with a 2011 population of 69,570. Its thousand-year history includes a 10th-century monastic foundation, Taunton Castle, which later became a priory. The Normans built a castle owned by the ...

. The reservoir is fed by other local water sources including

Otterhead Lakes Otterhead Lakes are a pair of reservoirs in the Blackdown Hills Area of Outstanding Natural Beauty south of Otterford in Somerset, England. They are fed by the River Otter and managed by the Otterhead Estate Trust Company Limited, working with th ...

and Blagdon reservoir. From 1969 leakage was detected in the retaining

dam A dam is a barrier that stops or restricts the flow of surface water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, human consumption, industrial use, a ...

. This got worse in 1990s remedial works, including a diaphragm wall were undertaken. In 2006 the lake was found to have an intense bloom of

Microcystin Microcystins—or cyanoginosins—are a class of toxins produced by certain freshwater cyanobacteria, commonly known as blue-green algae. Over 250 different microcystins have been discovered so far, of which microcystin-LR is the most common. Che ...

s which was associated high concentrations of

cyanotoxin Cyanotoxins are toxins produced by cyanobacteria (also known as blue-green algae). Cyanobacteria are found almost everywhere, but particularly in lakes and in the ocean where, under high concentration of phosphorus conditions, they exponential gr ...

s probably associated with

eutrophication Eutrophication is the process by which an entire body of water, or parts of it, becomes progressively enriched with minerals and nutrients, particularly nitrogen and phosphorus. It has also been defined as "nutrient-induced increase in phytopla ...

of nutrient enriched sediments.

References

{{authority control Drinking water reservoirs in England Reservoirs in Somerset