A labeled, accessible house master can isolate indoor plumbing without disturbing the utility meter assembly.
IWVWD says the valve closest to the street is for district use only. The customer valve is closest to the house, while the private master is commonly near the point where supply enters the building or in a garage. Confirm your layout before an emergency.
Keep this boundary: Never assume a meter-box valve is customer-operated based only on position. Follow IWVWD's current diagram and contact the district when ownership is unclear.