According to Gale Newcombe, Research Leader at the Applied Chemistry Unit of the Australian Water Quality Center in Salisbury, older filters have a well-established biofilm that removes geosmin and MIB. The fresh filters were ineffective in removing these elements.
SO does this mean I never have to change my water filter ever again? I hate getting on my hands and knees and –at time–making a pool out of my kitchen floor. This may be the answer!
More about water odor here