Water Storage Tank 

Manufactured from Glass Reinforced Plastic (GRP)

Water Storage Tank 


Water storage tanks are for the storage of potable or non-potable water. Water tank panels are made from GRP (Glass Reinforced Plastic) otherwise known as fiberglass. Fibre is reinforced specifically with glass fibre giving this material its durable properties. Water Storage tanks made out of fiberglass can have capacities up to about 300 tonnes. There are two types of water storage tanks.

Non Potable water tanks are used for the storage of process water. Process water is the name for water which is not used for drinking water. Examples include boiler feed water, cooling water for heat exchangers or engines, vehicle washing and irrigations etc… It should usually have a conductivity alternating from 0,1 to 50 uS/cm, with little to no hardness to avoid scaling in heating systems.

Potable water tanks are used for the storage of drinking water. The Potable water tanks are designed to store water for emergency human consumption or animal drinking. These tanks are manufactured to WRAS approval standards.

Types of Water Storage tanks

One piece Water Storage Tanks

Our GRP one piece storage tanks are designed for use where there are no space restrictions, and are manufactured from durable GRP materials. They are delivered in a one unit with the options of choosing insulated or uninsulated. Both tanks are manufactured with WRAS approved materials. We supply a complete range of connections and ancillary items with our tanks.

One piece tank standard sizes range from 30 litres to 9,000 litres, we can also supply a variety of bespoke water tanks catering for volumes of 43 litres to 24,000 litres. We offer express delivery to anywhere in the UK.

Industries: Domestic, Commercial and industrial

Water storage tank lids and covers: Plastic Water Storage Tank Lid/Covers are available for all tank sizes.

Sectional Water Storage Tanks

Our Sectional Water storage tanks are designed for use where there is restricted access. Tanks are assembled on site, we manufacture potable & non potable tank panels. All materials are WRAS approved. Options available for use include,

Externally flanged base tanks – more information
Internally flanged base tanks – more information
Internally flanged (I.F) tanks – more information
True totally internally flanged tanks (True T.I.F) – more information

Our large GRP Sectional Water tank projects have catered for tanks up to 1,3000,000 litres, see our case studies for examples of completed projects.

Industries: Commercial, Industrial

Multi-part tanks/knockdown tanks

Multi-Part tanks are designed for quick assembly and can be built on site, they are used when access is restricted, and they are made from GRP panel. Multi-part tanks have 6 panels, four Multi-part tank
sides, a base and cover. These tanks can be dismantled after use or used as a permanent solution for water storage. They come in standard sizes and can be made to order. All materials are WRAS approved and fully certified

Industries: Domestic, Commercial & Industrial

Water Storage Tank Certifications

Nicholson Plastics are certified to BSENISO 9001:2008, all materials are WRAS approved. (Water Regulations Advisory Scheme) All GRP products are supplied within the scope of our BS EN ISO 9002 1994 Quality Assurance Registration.

Career Opportunities

We are continually expanding our operations in Lanark and Croydon, attracting a diverse range of skill sets in our employees.

Nicholson Plastics - GRP Water Storage Tank