TYPES OF WATER TANKS
Water tanks come in a variety of shapes and sizes.
They are also constructed from different materials.
Galvanised Steel Tanks
These tanks have a zinc coating that protects the steel from corrosion. They can be built to hold large quantities of water, from 30,000 litres to millions of litres of water.
These are often the most inexpensive choice and they do the job adequately. The only issue with these tanks is they have a limited life span. Constant contact with water causes corrosion which slowly keeps wearing them down. Once this happens zinc can leak into your water leaving your stored water tasting metallic.
Concrete Water Tanks
Concrete tanks are quite strong and often long lasting, making for trustworthy water storage. Concrete tanks are usually constructed on-site, which means that you can have them built to your specifications.
Unfortunately, the introduction of reinforcing steel into concrete has created a new problem that affected the durability of concrete tanks. When embedded, reinforcing steel corrodes and this can cause concrete to crack and break. Lime, which is found in concrete, can also leak into the water.
Concrete tanks were common on farms across the country in the fifties, but more recently people have turned to polyethylene.
Polyethylene Water Tanks
Polyethylene has become quite popular in the last 2 decades. Poly tanks are made from food-grade polyethylene. They are strong and light-weight, which makes them easy to transport. The flexibility of plastic allows for variety of shapes to fit any area, from small tank in the suburbs used for watering plants through to large 30,000 litre tanks used on properties.
Cliff and Angela Riddle
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