The percentage of the property management fee that goes to fund maintenance of the water facilities is rather small and varies with the buildings' age, height and some other factors.
The property management firms of downtown office buildings could consider sending a worker inside each of the elevators during rush hours to ensure every lift is well used as well as maintaining a good order inside the facility.
The building management could also install a microphone in the elevator for monitoring-room workers to deliver similar services on radio for the passengers.