Plumbers and others are prohibited from turning on water in any service pipe, except for test purposes, without the permission of the Building Official or Building Inspector. Any licensed plumber may admit water to service pipe or connections for the purpose of test, but upon completion of the test shall turn the water off at the curb cock. New services, when completed by the plumber, shall in all cases be left turned off at the curb cock. Any plumber shutting off water from a private service, except for short periods of time, shall report the same to the Building Official or Building Inspector.