Water is essential to life and we all need a regular supply. Sadly, the waterways access to points aren't quite as regular as we need them to be sometimes. It is essential therefore that we consider others when we are using water points.
Only moor at the water point for the minimum length of time possible.
Try to moor in such a way that makes the best use of the available space and allows other boats to tie up. Even if they can't reach the tap, at least they will be able to wait for you to finish. This is especially useful if it is windy.
Be aware as you approach the water point that there might be a queue of boats waiting to use it. If your boat is in the queue then stand by the side of your boat so you can inform others and avoid embarrassment or conflict.
Although there might be two taps at a water point, there is often only one supply feeding them and this can sometimes be a poor supply.
If two boats connect at the same time the flow can sometimes be down do a dribble and it will take ages to fill your tank.
If someone else is already connected to the tap when you arrive and you see that the flow through your hose is very low then consider turning your tap off until they have finished. Let the other boat crew know what you are doing. They will be pleased and they will probably wrap their kit up quicker to reward your action.
Make sure your hose isn't a hazard to towpath users. A hose running at an angle across the towpath can be dangerous for a cyclist on a wet day. Place the hose at 90 degrees to the canal edge.
Don't leave your boat on the water point after you have filled your tank to have lunch or a cup of tea.
Don't leave your boat to go shopping, (by the way, we are not fooled by the limp hose leading from the tap to your tank).
Don't wash your boat at the water point. If you feel you must have pressure fed water then moor up in the countryside and connect a hose to your on-board system. Having said that, canal water is okay for a lot of boat cleaning.