I am currently taking a five week online course on Rainwater Harvesting from two water engineers, one Australian, one Canadian. Even the very first week has opened my eyes to the potential for this unbelievable resource to save our pump electricity, water our gardens, and provide drinking water. A carefully set up and maintained system provides water cleaning services naturally, unlike mains water which requires filtration and chemicals. Millions of people worldwide use rainwater as a source of drinking, etc. water without contracting disease from it. I am hoping we will be able to capture, store and use it soon!!!!
I know in some places this is a contentious issue and that regulations prevent the proper installation or sometimes even the capture of water from the sky at all. There are lots of politics around this, money to be made and fear to be instilled in folks. However, I am led to the experience of the millions of Australians who drink only rainwater and their health is the same or in cases, better than mains water drinkers. There are research studies to show this.
Please write of your own experiences with rainwater catchment systems and thoughts. Regulations, etc.