• Up to 300 m3 capacity in one piece or of unlimited capacity in multiples connected together
  • Gravel or concrete surround dependent on ground conditions and surrounding water table
  • Horizontal or vertical with option for integral ‘fibercage’ concrete hold own reinforcement

Underground Storage Tanks



Click on the link below to download the underground storage tank’s data sheet

Four 36,000 liter filament wound GRP petrol storage tanks installed in a gravel surround over 20 years ago for Mobil Oil in Shepperd’s bush filling Station, London. Corrosion free since its installation 20 years ago.


Below ground storage of petrol and diesel in garage forecourts or distribution depots.

  • Corrosion free storage of hydrocarbons for over 20 years and above
  • Helically wound GRP with integrally wound Camplas ‘FibeRibs’ for maximum strength
  • Can be ‘double skin’ construction with warning alarm for leak detection purpose.
  • Produced and tested to BS 976 -1: 1997 – Underground GRP petroleum storage tanks

Four 36,000 litre filament wound GRP petrol storage tanks installed in a gravel surround over 20 years ago for Mobil Oil in Shepperd’s bush filling Station, London. Corrosion free since.


  • Secure standby water storage for firefighting hydrants and sprinkler systems in vulnerable areas
  • Compliant with US Underwriters laboratories requirements.
  • Sprinkler tanks can be 2 compartment with drywell containing pumps and wetwell with suction vortex breaker
  • Unobtrusive below ground installation or can be free standing in a basement

5 no 200,000 litre Hydrant standby water storage tanks – Kostal GMBH , Mallow Co Cork, Ireland

Two 140,000 litre potable water tanks delivered by sea to Caldey Island, Pembrokeshire to contain a spring used by the monks of the monastery since the 6th century and now the many tourists.


  • Extensively used for Rainwater harvesting or natural sources such as springs or boreholes for horticulture or irrigation on sports grounds and golf courses.
  • Mains fed using WRAS approved material for linings in contact with the water
  • Particularly useful in rural areas with unreliable mains water supplies.

sprinkler tanks

Secure standby water storage to feed firefighting hydrants and sprinkler systems in vulnerable areas.

36000 litre sprinkler water storage tank and dual pump chamber – Comprehensive School, Swansea

BYPASS ‘FILTERCEPTOR’ and 1500mm diameter ‘Divertaflow, valve controlling the entire flow of rainwater from the Ford Engine Plant, Bridgend. Designed to close automatically in the event of an oil, acid or alkali spill or in the event of a major fire to contain the products of combustion.


To contain and intercept spillages of petrol, oil or chemicals to prevent pollution of watercourses – by natural gravity separation or the closure of a Camplas’ Divertaflow’ valve in an emergency.

  • Full retention interceptors treating the entire flow from highly contaminated areas
  • Bypass interceptors treating the first 10% of the maximum rainfall of 50mm/hour in lightly contaminated areas such as motorways, large car parks and airports
  • CHEMCEPTORS’ -‘Blind’ holding tanks to contain major spillages of chemicals and other contaminants to prevent pollution of watercourses often linked to a Camplas Divertaflow valve
  • Mini-Filterceptors – Manhole size high quality filtration from risk areas such as transformer bunds
  • Creofilters to remove difficult materials such as creosote from rainfall on pole storage areas


To contain storm water and prevent flooding in the event of heavy rainfall or emergencies and allow the storm has subsided. the water to return to the drainage system under control once.

  • Using an outlet control valve of the orifice plate or vortex type to control the outfall
  • Storage capacity designed to hold the highest predicted levels of rainfall
  • Can be installed in ‘surplus’ land areas roadways and car parks

6 – 250,000 litre STORM TANKS tanks linked together to give 1.5 million litres of storm containment capacity with a Camplas ‘ Orifice’ plate control valve to limit the flow to 35 litres per second and prevent flooding of steep sided valley -McArthur-Glen Designer outlet village, Bridgend

CSO Attenuator – 1200 cubic meter capacity made up of 6- 200,000 litre Camplas tanks linked together – providing for heavy rainfall events during major golf tounaments – ROYAL St ANDREWS GOLF CLUB. Scotland

Three 300,000 liter CSO Attenuators connected together with a gravity discharge – Dwr Cymru/Welsh Water ,Nelson, South Wales


To contain the excess flow in times of heavy rainfall in combined sewer and rainwater outfall pipes and return the flow at a controlled rate to the treatment plant when the storm subsides.

  • Holds back the excess flow at times of heavy rainfall and allows it to return to the system when the storm has subsided.
  • Can be fitted with a screen on the overflow to segregate materials at times of extreme events
  • Can be gravity outflow or pumped discharge to match the capacity of the system


Humus tanks and clarifiers to remove settleable particles from final effluent discharges or domestic water supplies.

  • 60 degree cone base
  • V notch top overflow weir adjustable to give quiescent flow conditions.
  • Can be buried to ground level, part buried or totally free standing
humus tank

HUMUS TANK – 8 meter diameter 9 m tall Humus tank being installed in one piece with integral Camplas FiberBar concrete reinforcement and hold-down cage to prevent flotation in high water table area – Severn Trent Water

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