I'm getting a new liner installed Saturday and will need to fully fill the pool. Problem is with my last liner I noticed staining due to metals. I had my well water (water used to fill pool in the past) tested and it came back 0.6ppm copper which I understand to be high. I have city water as well but don't really want to use it if I don't have to because it will cost a lot more. Is the copper in my well water truly too high? Any recommendations on how to get rid of the copper if that is too high?