Depending on the size of the use will determine how big the system needs to be. Your rainwater collection system can be as simple as one or more rainwater cisterns, or rain water barrels connected to the downspouts of your home gutters. Or if you prefer, you can construct a more elaborate system piece by piece.
A complete system for rainwater collection could include either above ground or below ground storage tanks. While above ground tanks are easier to install, they can definitely be more expensive and less attractive. Below ground tanks might require some digging, but they are less prone to evaporation since they are underground and not in direct sunlight. Preventing evaporation may be extremely important- especially in drier climates-depending on how much you rely on your rainwater supply.
You may be both excited and overwhelmed at the thought of collecting rainwater and all the benefits which come along with doing so. Once you are ready to begin building your rainwater collection system, you will be ready to begin a worthwhile, rewarding endeavor. So do not hesitate, contact a pump supplier and get your own rainwater harvesting system installed.