Earlier quoted context omitted.
Most states wont even allow you to collect your own rain water to drink it.
There only appears to be a single state (Colorado) where collecting rainwater is strictly regulated,[0] and in most states (31) it is not illegal/no regulation/even encouraged. A further 9 states regulate and encourage rainwater collection, and then Texas provides incentives to do so. The remaining 5 states simply have regulations around rainwater collection. [0] https://energy.gov/eere/femp/rainwater-harvesting-regu…
>Both Texas and Ohio allow the practice for potable purposes, which is frequently excluded from other states’ laws and regulations
Also there it notes most Western states disallow or regulate it.
From your link any state that says water rights are regulated, as far as I can tell means water rights exist seperately from property rights, and typically belong to the state.
Anyways it is not as bas as I had believed.
0-www.ncsl.org/research/environment-and-natural-resources/rainwater-harvesting.aspx