Your concern for health-related hazards with coffee/tea vending machines before deciding on procuring them is appreciated. I have gone through the views of members on the plus and minus points of the coffee/tea vending machines in the office area and generally endorse them. I would like to add:
• Tea is credited with the beneficial property of antioxidants and is hence less harmful than coffee.
• From a hygiene point of view, disposable paper cups are preferred to glass, ceramic, plastic, and other reusable types.
• Periodically, the interior surface of the vessels in the vending machine should be tested for E-coli. This can be done by sending swabs to a lab.
Through a clear agreement with the vendor or other arrangements, the quality of water used should be ensured. [Many complaints about water quality used in Cola vending machines run by franchises are on record.]
I further endorse the following tidbits appearing in this chain and in the links to earlier discussions on the subject:
Coffee Machine Etiquette
Employees spill sugar or coffee on the pantry floor or slab. Using sugar cubes instead of powdered sugar helps to minimize the hazard.
Posters
Have a good time with me. (Vending Machine says to Employee)
Please don't press twice to avoid overflow.
Keep yourself and the office clean by not spilling over.
Deterrents
Institute a roster so that everyone in the office MUST take a turn in cleaning up the mess. Very soon, peer pressure will mean that people learn to keep the area clean and tidy as they don't want to clean up other people's mess.
Posters aimed at changing the behavior of machine users
You know what behaviors are annoying you, i.e., spilling coffee or sugar, etc. Just make a list of the things that bug you and post that near the coffee machine.
Something like posters on DO's & DON'Ts
You just create your poster like (Title) "Check Your Nature & Character from your Coffee" showing 3 coffee cups and behind the coffee cups text like "If YOU spend your coffee time without spilling coffee - YOU are a socialistic person and you care about your environment and YOU are a good caretaker of the company - - something like that.... it makes them think about their behavior.
Consuming too much coffee/tea/chocolate/cold drink has the same effect as long-term stress. Beware of the link between caffeine intake and high blood pressure and high cholesterol levels.
Maintenance of Vending Machine
The vendor selected should have a good track record of maintaining the machines as edible contents in the machine attract a lot of pests, especially ants and cockroaches. To avoid this, it has to be cleaned at regular intervals (i.e., 15 days). Also, the vendor should provide the lab report of the pre-mix, which is generally provided by the vendor on demand from the user.
Regards,
Nityananda