Electric toilets
When getting a toilet to be flushed with pressurized fresh water, you must get the CORRECT one to begin with. You can get them for raw (outside) water flushing, or for flushing with pressurized fresh water from your onboard pressure system. But you must order it that way to begin with - don't even think about trying to convert a raw water toilet to flush with pressure water. You're risking contaminating your tank(s), plus it may not work. In some instances it can be done, but depending on where you pruchase the necessary parts, you're looking at between $200 and $300, for just the parts, plus a good deal of labor in order to convert it. In most cases it isn't worth the time and money. It's best to wait until the toilet dies, then order the unit for the application you want. And there are no (to my knowledge) toilets that can do both - flip a switch and go from raw water to pressure water. Some manufacturers offer kits to do that, but you're looking at an even bigger expense.And finally, ALL manual toilets that are commonly available, are raw water-only. Their seals cannot withstand pressure water. If you have a manual toilet, it's raw water only - learn to live with it!