how to get fresh water into the fresh water tank

[lakechopaka]

Thank you to all of you who participate in this forum it is very helpful. This week we took our new 24RKSWE out for a week long trip. By day six I needed to put more fresh water into the freshwater tank. Obviously lifting a heavy water container trying to hold the funnel into the fresh water tank hole and pouring was difficult to say the least. Have any of you come up with a better idea that will put the water from a container into the fresh water tank and still be safe for drinking etc.
Thanks in advance for the advice.