[ul]
[li]Permit from DEQ to obtain the water supply.[/li]
[li][/li]
[li]NPDES permit may be required for water treatment residuals.[/li]
[li][/li]
[li]Local building permits.[/li]
[/ul]
I am not familiar with Virginia, but I am sure the Department of Health has regulations you must meet, if not a formal permit. Normally they are the prime regulatory agency.