If water bills are starting to get you a little concerned, you might want to take a look at ways in which you could lower them. Of course, the best way to do this is to use your taps and faucets less frequently, but there comes a time when you really cannot go much lower with your usage. In cases like this, you will have to resort to an entirely different approach to fulfill your demands without spending more each month. 
We are specifically talking about using collected rainwater for certain applications in your house, such as for washing clothes, do your gardening duties or even flush down the toilet. Due to this, you can easily reduce your water bills, while also finding some use for all that water that you receive from the occasional thunderstorm.
First of all, you need to select what kind of tank you want to store this rainwater. Nowadays, experts highly recommend going for an underground rainwater tank since it can be installed without spoiling the exterior look of your home. The ability to conceal the tank underground leaves you with plenty of space for your other activities, so you won’t even feel a difference after installing the tank.Selecting a rainwater tank is not much dissimilar from choosing good poly chemical tanks for industrial storage purposes. You will need to factor in the size of the tank, your space restrictions, price and even other things such as the climate in your area, amount of rainfall you receive and the chance of droughts happening.
Climatic conditions are really important, mainly because rainwater tanks are not suitable for locations which have a very low rainfall throughout the year. The size of the tank itself is also dependant on this factor. Larger tanks for areas with less rain, and smaller ones for areas which have rain on a frequent basis.
Next, you will need to note down the catchment area of the tank. Most rainwater tanks are filled with rainwater collected from the roof, but you can devise other mechanisms to collect even more water when it rains. For further information, try to contact the manufacturer to see what kind of solutions they are able to provide to their customers.
Finally, you should also see the type of materials with which the tank is going to be built. Since water is not a corrosive liquid when compared to most acids and other industrial liquids, you don’t have to get your hands on tanks made of exotic materials. A normal plastic tank should suffice for domestic uses, plus the lightweight and low cost should enable you to install it quite easily.