Here in the dry hill country of Texas we are short of water. I built a rainwater collection system after attending a seminar and spending a lot of time at the library and on Internet learning how to make one work. Ours is great! It has a roof-wash subsystem and we can collect 3300 gallons from our garage and barn roofs. It is not exactly rocket science, but it does require some craftsmanship. The water is OUTSTANDING for making good shaving lather. No spots on the washed cars either. We are not using the water in the house of yet. Our water is for the landscaping and vegetable garden. In Texas all supplies and materials from the gutters to the spigots are sales tax-free. I shower with rainwater. Understand that in certain parts of the world, rainwater collection is mandated by law. Soon I fear this will happen here. I hate being ordered to do something. I am ahead of government edict thus far. Later I shall add more tanks and get off the municipal water system grid. Meanwhile, use some rainwater for shaving lather. I think you will like it. RRR