Water Storage

Guidelines for Sizing Water Storage Tanks

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Water Storage

  • Hotels 1045 Litres (actual capacity) per bedroom per day
  • Offices 45 Litres (actual capacity) per person per day
  • Schools 36 Litres (actual capacity) per person per day
  • House with 2 bathrooms 682 Litres (actual capacity) per day


The mains pressure must be sufficient to re-fill the tank while the premises are closed. In areas with low water pressure, the above figures would need to be increased. In our experience, the water pressure has been reducing gradually for the past number of years, particularly in the cities and in areas where there have been large developments.

Note: The above figures are based on Dublin Corporation Guide Lines. The minimum requirements do not include for fire-fighting

Nominal Versus Actual Capacity

Tank Height% loss in capacity for 51mm (2″) overflow % loss in capacity for 89mm (3½”)

The above figures are approximate and are based on a 51mm (2’’) and 89 mm (3 ½ “) overflows. If a larger overflow is used, the percentage loss will be greater.

For more information see our installation & tender guidelines:


View our Technical Information 

Recent Projects

Extensive industry experience, manufacturing since 1973.

Tricel manufacture deliver & install cold water storage tanks across a wide range of industry sectors throughout Ireland & the UK. Tricel also provide an import/export services for our international clients. Tricel have been Manufacturing water tanks since 1973, and are made from Glass Reinforced Plastics (GRP). This top quality material offers outstanding capabilities including long life, durability and is a cost effective solution for water storage even in the harshest environments. Cold water storage is available for both potable and non-potable applications.

GRP Water Storage Tank Installations

Data Centres

Government Buildings

Airports & Hotels


Key Features

Why Tricel Water?

60 years in business

A highly successful multinational corporation with over 60 years’ valuable industry experience

Fully Customisable Tanks

Tanks available for all capacities, 43 litres to 4,651,290 litres. Larger tanks available on request

Fast Delivery

On-time delivery is a core requirement of our successful business operations

Get in touch


    Tricel (Killarney) Unlimited Company
    Ballyspillane Industrial Estate, Killarney, Co. Kerry,
    V93 X253,
    00353 (0)64 6632421