I have been a fan of rain barrels for many years. (I own eight of them and wouldn't be without them.) I have also written about these handy devices on several occasions, most recently this week in the community papers for ZipO6/TheDay. In this article, Beverly O'Keefe, "the Rhode Island Water Lady," offers rain-saving pointers.
She reminds us, "Rainwater is the preferred beverage of all plants. It is well oxygenated and naturally distilled.” She adds, “It isn’t chemically treated, so the water’s pH isn’t artificially elevated.”
After reading Beverly O'Keefe's thoughts on rain barrels, also see my article on how to pick one: Rain Barrels: More than a Drop in the Bucket In it, we look at the arithmetic behind water collection and other important details for barrel selection. You may be surprised.