The most recent replacement cartridge turned all our water blue. The water tasted awful. Drinking one or two swallows caused vomiting and diarrhea. The color and taste did not diminish for 3 days, until the cartridge was bypassed. After bypassing, I tested the water for copper which remained at unacceptably high levels for another 4 days. Has anyone else had these issues? If so, is there any legal remedy?