I've always had the twin under sink sediment and .5 micron carbon filters believing better quality water up until a couple of months ago I purchased a TDS meter testing the tap water came up at 206ppm in Springwood 4127 then testing newly replaced filters came in at the same read. woolworths 600ml spring water read 87 and my mates place at Arundle gold coast had a very impressive 80ppm and same read again from his under sink filter.
Now with this knowledge looking up water filter supply shops they all admit carbon filters remove very little if any total dissolved solids from water.
Is there any point in having a filter system? I'm thinking it's all a brain wash scam.