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Guidelines for Water Storage Tank Installation 


General Water Tank Installation

The following recommendations are generally for elevated tanks, as tanks at elevated positions can cause serious damage to the surrounding area in the event of wall, pipe or structural support failure resulting in water spilling out at a fast rate.

Consideration must be given to minimise the effects of such an occurrence, in terms of the positioning of the tank and regular inspection for defects.

Water tanks should be located so as to prevent water damage or consequential loss in the event of leakage howsoever occurring.
• All tanks which are located above water sensitive areas should have a bund wall around them with adequate evacuation ducts.
• All other tanks should have Condensation or Drip trays to prevent nuisance damage and to keep floors dry.

Over the years we have seen tanks fail due to age, lack of maintenance, failure of the structural supports underneath the tanks, contaminated water attacking the internal fittings, ball valve failure where overflows were not fitted, vandalism etc.

Water Tank Installation on Top of Buildings

Water tanks located on top of any building should be sited at least 1.2 meters away from the edge of the building. It would be preferable if the water tank was sited 1.5 times the height of the tank away from the edge of the building. In the event of failure, this would allow the water to spread itself over a much wider area before spilling over the edge of the building and possibly
taking personnel or debris with it.

Rooftop Water Tank Installation – Handrails Health & Safety Requirements


Handrails may be necessary to satisfy Health & Safety Regulations. The type of railing required is dependant on the tank height, distance from ground level, access etc. Please confirm which handrail arrangement is required so that we can make the necessary inclusion. We can supply and install ladders and railings, but we must be informed of the exact details prior to quoting the project. We assume that the end user is making his own arrangements unless we are informed otherwise.

Water Tanks Installations on Elevated Structures 

For water tanks located on top of elevated structures, a walkway of at least 1 meter should be provided all around the water tank to allow for maintenance and inspection. This walkway should comply with health and safety regulations.

Potable Water Tanks

To comply with the Health & Safety Executive regulations on the Control of Legionellosis 1998, Cold Water Storage Tanks must be located in areas that are “readily accessible for cleaning”. Regular Maintenance and Inspections as required by Health & Safety Legislation.

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