OK, I met with the landscaper today, and am putting in a couple pond-liner-style bogs in the back yard. My option is to have them undrained and water with R/O water by hand, or have them drain and use our tap water. I've tds-tested our water and it's 110ppm. This is borderline, which is why I'd drain it (to avoid mineral buildup) if I went this route. If I go with the drained-bog/tap water route, I could automate it so it comes on a few times a day so it's always refreshing the water.
Does anyone have experience using tap water in this way? Is this viable?