Water

[Essen]

How to make the water, like, slowly drain after you solve certain puzzle?

For example, there are six levers and you have to move them in right direction(let's say: up, down, down, up, up, down), then there is a lever that checks whether the levers are in correct position, and if they are, water starts draining until there's no water after all.

Would that be possible? If yes, can you please tell me how to do it and all? Thank you for any help.