Hi there. We are building a house in the Pacific NW and will be on well water. Our well was drilled 2 years ago, and we recently had comprehensive water tests done. We can't seem to get any straight answers on when silica becomes problematic, i.e. etching glass, fixtures, etc. I know a whole-house reverse osmosis system is the only way to remove silica from water; however, I don't want to go that route if we don't have to. We could take a wait-and-see approach, but then the damage will have already been done, and from what I've been told, it's irreversible. We will have a glass shower enclosure and don't want it cloudy in a few years. Does anyone know at what level (in mg/L or ppm) silica crosses the threshold from being harmless to etching your household glass (and does it etch faucets/fixtures too)?