Not every method is perfect. In fact, it has its own flaws and loopholes. If you are thinking about getting or installing a rainwater tank think of several factors. First is to think about the cost. Some rainwater tank can be costly, but you can cut cost if you go to the right place. Also, take flexibility into consideration. You wouldn’t know if you might need to do some renovation and you would have to move your rainwater tank. However, there are options. Some rainwater tanks are ergonomically designed and lightweight so you wouldn’t have any problem when it comes to moving them around.