Hi Gary, If you have an inverter on your boat I highly recommend a domestic 110 volt "well pump" and a fiberglass accumulator tank. They are available off the shelf at most large home hardware stores and will give you no problem domestic pressure water throughout the boat almost forever. It will also draw from either tank in each hull as it is good for a 24' head. I discovered them when I bought a house in Nova Scotia, Canada and they are used everywhere in cottage country as they are so reliable. I have fitted them to a couple of my boats but as the boatyard supplied them I don't know the brand. Cheers, Graham Pfister Trawlercat Marine Designs Message: 2 Date: Sun, 28 Feb 2010 21:52:14 -0800 (PST) From: Gary Hagstrom <ghagstrom@yahoo.com> To: power-catamaran@lists.samurai.com Subject: [PCW] Catamaran potable water system query Message-ID: <638111.38055.qm@web34204.mail.mud.yahoo.com> Content-Type: text/plain; charset="us-ascii" Ladies and Gentlemen, My questions today are as follows 1-Do any of you have potable water tanks in each hull and have only one potable water pump or do you have one pump in each hull for each tank? If one pump, what kind and does it successfuly draw water from the opposite tank or is the pump mounted centally onthe bridge deck? 2-If anyone has one pump what brand and type or model is it? 3-Does anyone have particularly good experience or bad experience with specific potable water system pumps? If so, which ones and if bad experience what are the problems. Gary Hagstrom Iron River, Wisconsin ghagstrom@yahoo.com ------------------------------