If public water were to stop flowing through the pipes tomorrow, what would you do? Many of us might panic, and run to the store looking for bottled water, but that is not a viable alternative. Considering the amount of water each person uses every day, you would need another solution. Thinking of scenarios like this is what has motivated some to practice some type of rainwater catchment. This has been tried and true for people throughout the centuries, and in large parts of the world it is still a necessary practice.
If you want to get water for crops, washing clothes and flushing toilets, you could set up a simple system that doesn’t require much to function. On the other hand, if you need water for showers and even drinking, you will need a purification system. You also need to consider the surface that the water is collected from. If there is paint that is flaking, bird excrement or other pollutants, it might need special attention.