Call them up and ask what would prompt an inspection before you do anything. I'm sure they expect you to have sinks & toilets. Meanwhile, if it were me, I'd make sure my survey indicates that i REJECT any non-potable water sources to co-mingle with my safe water supply!! They don't want to do the WORK/EXPENSE to expand properly, it sounds like they're entertaining shortcuts and are seeking permissions.
Call them up and ask what would prompt an inspection before you do anything. I'm sure they expect you to have sinks & toilets. Meanwhile, if it were me, I'd make sure my survey indicates that i REJECT any non-potable water sources to co-mingle with my safe water supply!! They don't want to do the WORK/EXPENSE to expand properly, it sounds like they're entertaining shortcuts and are seeking permissions.