While hiking today near Zealand Hut I noticed that the AMC replaced the "rube goldberg" looking water driven pump with a DC commerical unit. I expect the old one was somewhat maintenance intensive and had some moving parts exposed so it probably needed to go, but I will miss it as it was quite a marvel and had an interesting sound while operating. The new one is a stainless steel housing with a sealed pump rod and appears to be plunger style pump driven by an electric motor. I also expect that the new pump is somewhat better sealed to surface water and its associated contamination so thats probably another reason to replace it.