My filter is in my kitchen water feed. It is a dual filter - first it goes through .9 micron, then through .2 micron. Sorry I cannot give a brand name - my husband is totally in charge of it. We have city water from a deep well in one location, my second has just changed to the same. Both kitchens have the same filter, plus the water heater at 135F or a bit higher in each. We do not drink or cook with water from the other taps in our house. I use the filtered water to make ice.

So far (over 6 years) this has been safe for me.