A water treatment tank lining is an integral part of a water treatment system. A water treatment lining is a coating that you apply to the inside and outside of the tank to protect it. The lining helps protect the tank from corrosion, contamination, and leaking. No matter what type of tank you have, a water treatment tank lining can provide additional durability and longevity. Water tanks are constructed from various materials, including steel. For over 150 years, many have trusted steel to transport and store water. A water treatment tank lining is also found in filter beds, clarifiers, and troughs. Consider these water treatment tank lining options.

Stainless Steel

This is a common type of water treatment tank lining. It can be rough or polished stainless steel, with rough being used the most.


An epoxy lining is made from a chemical-resistant material. Epoxy lining can sustain high temperatures and aggressive material. Epoxy is a strong and durable lining that resists moisture. It does not contain solvents that could leak into the water in the tank. Epoxy is versatile and has a variety of uses.


A cementitious liner is commonly used for lining a cement tank. However, it is also used as a lining for underground tanks. Cementitious is an ideal lining to contain chemicals in a tank. It can also waterproof areas underground. A cementitious water treatment tank liner is excellent for underground because it is vapor permeable.


A polyurethane lining is versatile and used most for concrete structures. A polyurethane lining must be explicitly designed to be used as a tank lining. This lining does not contain solvents, making them safe and easy to apply.


Polyurea has been relatively new since around the 1990s when it comes to lining water tanks. This lining is gel-like and can be sprayed onto a tank. Polyurea also means it can be applied quickly and easily. In addition, it is a flexible and strong liner. It can resist abrasion and is free of solvents. This type of lining can be used to line steel tanks, concrete tanks, and as a protective layer for chemicals.

Before you decide which water treatment tank lining option is ideal for your tank, it is essential to understand how and where you intend to use your tank. This allows you to make the best selection.