What is the difference between potable and non potable?

Potable water storage tanks are used to store potable water – water that is safe for human consumption. These tanks tend to be constructed of a food-grade, medium density polyethylene, and approximately 250 litres in capacity on average – but can range from anywhere between 5 to 30,000 litres.

Non potable water storage tanks, on the other hand, are used to store water which may no be used for human consumption. They are commonly installed on agricultural and commercial properties. It’s important to note that in general, the majority of plastic water tanks on the market are non potable due to the porous nature of many commonly used plastics – so look out for potable or non potable product labels or descriptions before selecting your storage tank.