All a TDS meter does is read the resistance of Millivolts across the probes and at 45 that is high and if you are saying that 610X10 is high thats shows what needed minerals and elements are dissolved into the water as they create more resistance. Salt Calcium strontium stuff like that .. With your tap water that is really bad it could be metals or other unwanted minerals and elements in that water.. _________ Some of the world's greatest feats were accomplished by people not smart enough to know they were impossible (Doug Larson) |