Durable and hygienic water supply storage that’s easy to assemble and adapt to changing needs.
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Water storage tanks come in a range of materials including concrete, metal, and plastic - each with advantages and drawbacks. Overall, industry experts consider stainless steel tanks to be the optimal choice due to their ease of maintenance, durability, and environmental friendliness.

Traditionally made carbon steels corrode when exposed to environmental factors – high or low pH, moisture, and chemicals like chlorides. If carbon steel used to construct buildings corrodes, structural failures and safety hazards can result. But stainless steel, alloyed with other metals like chromium, retains its integrity in temperature extremes and severe weather and resists corrosion from water and contaminants.


While tanks made from other materials may cost less initially, the longer lifespan and reduced maintenance and repair costs of stainless steel tanks mean reduced total cost of ownership. And steel’s strength means the gauge of tank walls can be thinner. Lighter, thinner panels mean lower costs to transport and construct. Because stainless steel doesn’t need internal or external protective coatings, there is no scratching during installation, and no problems from aging or degrading coatings or peeling external paint.

Durability and longevity

Concrete tanks are prone to cracks and leaks due to manufacturing flaws, swelling and shrinking from temperature changes and moisture - It is an expensive and time-consuming repair or even replacement if necessary. Stainless steel’s strength and flexibility mean its structural integrity stays intact in the face of environmental changes.

Easy to clean

The ultra-smooth surface of Sunnik stainless steel tanks means sludge and mold won’t stick or accumulate. To clean, just pressure wash with water.

Most hygienic

Stainless steel is the most sanitary material available for water containment, food processing and medical uses, making stainless steel tanks the most hygienic option for storing communities’ drinking water.

While plastic storage tanks initially cost less than stainless steel, they are susceptible to bacteria and mold growth – as are costly concrete storage tanks that also leach calcium and can contaminate water supplies.

recyclable and sustainable

The environmental impact of extracting and producing materials that go into making storage tanks is a critical factor in choosing which storage tank to invest in.

Steel is the world’s most recycled material - new stainless steel is 60-70% recycled with no loss of quality, and it’s energy efficient to produce, minimizing its carbon footprint.

Stainless steel is also a safe metal alloy - it doesn’t degrade and leach toxins into the environment.

our aim is to make steel with


the global growth rate (CAGR)


recycled content


use rate of slag


of electricity comes from low-carbon sources

Optimized water solution