Ever since we started Rain Barrels Iowa we have been asked "Isn't it illegal to collect water in _Fill in the blank__?" Well, the answer has been mostly NO. There may be a few isolated areas where there is a temporary ban on harvesting rain but there are now no states where it is illegal. The following link is to a Colorado news station about the passage of a law allowing people to harvest up to 110 gallons of water beginning August 10th of 2016. http://www.9news.com/news/politics/rain-barrels-could-soon-be-legal-in-colorado/114878938
As long as we were looking into this issue I found this link which gives a little more information about making use of rain water. https://www.truthorfiction.com/collecting-rainwater-is-illegal-in-some-states/
Using rain water makes sense for your plants and for your pocketbook. Rain barrels allow you to harvest naturally soft water month after month and year after year. So cheers to the people of Colorado who can soon legally join us in using one of our natural resources.