Stagnant water in Jug tastes moldy when ran through water cooler. How does one de mold the insides?

Can the Water Jug be saved as well?

What controls the flow of water in a typical water cooler?

The water jug neck sets in a pool of water creating a vacuum. Could the neck be connected to a small hose that fills up the same open air pool?

looking for adapter to 5 gallon water cooler jug?

The water jug is the type you would get at the office or home. Blue and see-through and fits on a water cooler. I want to make a spigot out of it for drinking water while camping. It fits on the top of the jug with a hose coming off it.

How could you build something that would make a water jug go into a water cooler easier?

I need an idea so that people who were not physically fit enough to lift a water jug could put it into the cooler without any problems.

How long can water last in a water jug on the water cooler? It is from the tap-city water not delivered?

I just bought a water cooler but opted not to have water delivered. The water jug I am using has a removable lid. I pour filtered water in the top from the tap. Then, I place the lid back on. The jug does not have a seal. Will this water go bad? I refill it about every two days. The water in the tubes in the cooler is probably okay but what about the water that sits in the jug? Thanks