I knew my water might be getting high this morning when i filled up but i forgot to checked it . Finished my last job and for some reason i checked it 50ppm . Drove home emptied the rest of the water down the drain changed resin and filled up again .I then went back to the houses i did to check the windows expecting to do them all again but they were all great .Strange i thought what can it be it was the ruddy tds meter. I had 3 different readings on my tap water 118ppm 210ppm 240ppm .Worst thing is i put 200 lt of water down drain :angry: