Castaway,<br><br><br>Good point!! I regularly observe my neighbors dumping oil, antifreeze, old gasoline etc...in the creek. I don't believe that the issue of chemical pollutants has been addressed on the forum, although it definately should be. I can't think of a single "fits in a PSK" water treatment process that will deal with those sorts of contaminaints. I'm not even sure if any of my water purifiers will (scary thought).<br><br>Anybody know anything about this?<br><br>Take care,<br><br>Andy