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So I pick up this drinking water tester.... Here in Oregon. Tap water is reading red=contaminated and 64 parts per million. I tested some bottled water . It was green =ideal drinking water And had 28 parts per million. I went around and tested some rivers . Both green and suitable for drinking. One was 40 parts the other was 38 parts per million. Make this make sense!! My filtered water that comes out of fridge was contaminated at 55 parts. Put in new fridge filter, ran 3 gallons threw it and tested it. Contaminated at 49 parts per million!!! Unbelievable