Cold water storage

C​old water cistern installation

Factors to consider when deciding where and how cold water storage cisterns are installed include but are not limited to:

  • whether the distributing pipework (system) is pumped or supplied by gravity
  • the need to allow for ease of access for maintenance
  • inspection (both internally and externally)
  • cleaning requirements
  • environmental factors which might affect water quality such as excessive heat gain or the likelihood of flooding.

Float operated valves and other controls should be readily accessible. There should be sufficient clearance to allow for inspection, cleaning of internal surfaces and maintenance.

Cisterns with a capacity greater than 1,000 litres should be capable of being inspected and cleansed without having to be wholly uncovered.

To avoid distortion cold water storage cisterns should be adequately supported. Advice on how to do this can be found in Part G of the Building Regulations.




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Uncontrolled if downloaded. This is informative, non-statutory guidance and intended for general guidance purposes only; it is subject to change.

Compliance with this information should not be relied upon as guaranteeing no enforcement action will be taken by water undertakers. Water Regs UK accepts no liability for loss, indirect or consequential loss arising from or in connection with this guidance document.