The gubmint wants to control everything - if they can control it, they can regulate it, and if they can regulate it they can fine you or force you to pay a fee or tax on it. With government it’s always about the Benjamin’s. Every time.
Actually, control of water, private or otherwise, is a UN agenda 23 issue. They also want meters on private wells, and control of all natural resources, globally.
It’s been a couple of years, but the last time I looked, Agenda 23 was still on the UN website. Agenda 23 is also what’s behind the gun control issues.