My septic tank backed up and I had it pumped out. The guy said that there were a lot of solids in the tank and asked when I had it pumped last. I have lived in the house for two years and had not had it done myself. The guy said that he thought my leach line MIGHT be bad but does not know. I had my RO system fixed today and the tech that fixed it said that there was a bad valve and by his calculations there was 1650 gallons a month being bypassed into the drain. My septic tank is 1500 gallons. There is a nice green patch of weeds and grass over my leach field and my tank did back up but it was a solids problem as far as I could tell. Could my leach line still be good? How would could I check to see? HELP>>>>>