What are Polyethylene water storage tanks?

What are Polyethylene water storage tanks?

To understand the Polyethylene water storage tank, let’s see the function of a water storage tank in general. A water storage tank is any sizeable container that stores water for household or industrial purposes. Available in various sizes and shapes, the storage tank can hold a few litres to a thousand gallons in pressurised and non-pressurised formats. Functionally, the tank collects water and stores it for later use. Users get quick access to fresh water whenever they turn the kitchen or bathroom faucet. 


What is a Polyethylene water storage tank?


A plastic water storage tank is made from polyethylene or polypropylene polymers and engineered to store water for various work environments. These tanks securely hold large volumes of water (potable or non-potable) depending on requirements and type of water storage tank. The containers come in various designs and sizes, including for underground installation, and can even store chemicals. 

Polycon water tanks are made from FDA-approved food-grade polyethylene material.


Most water tanks today are made of polyethylene, alongside a basic resin and UV stabilisers, either titanium oxide or carbon black and a pigmentation compound. This is if the tank is any colour other than white. Poly plastic tanks come in different densities, such as LDPE (low density), HDPE (high density), and MDPE (medium density). These are examples of linear polyethylenes. HDPE, however, is one of the most popularly used materials to manufacture plastic water tanks.  


Depending on the raw plastic material used, a water tank is created with a particular shape, size, and design with the help of a mould used in specific manufacturing procedures. Some of the most common industrial methods are blow moulding and rotational moulding, used to create plastic water tanks. 

Rotomoulding and rotocasting methodologies create rigid-walled water tanks, including vertical ones.

Blow moulding is used in building water tanks that have semi-flexible walls. The process uses an openable product mould and a resin apparatus that uses air and heat. 

Are plastic water tanks safe?

Polycon’s water tanks are incredibly safe and use thoroughly researched, engineered, tested, and verified materials to curate tanks. They are usable and reusable, have the ability to withstand harsh weather, workplace environments, and other elements, and are helpful for long-term applications. 

Our polywater tanks do not contain harmful Bisphenol A or phthalates because they are fabricated polyethylene resins. Phthalates are commonly used in polyvinyl chloride plastic products and not in polyethylene. The water stored in our poly tanks is highly safe for consumption and available in various types. 

Learn about the various types of poly storage water tanks from Polycon.