Lassig - been there done that. Last year we had the same problem at my parent's place. Same type of septic, with the 'clear' water discharge maybe 250-300 feet from the tank discharging at ground level. We had to use a propane salamander and set up a little tent over the top of it. Took a couple of days to thaw.

Then last summer we resolved the problem permanently. We went back up the pipe maybe 30-40 feet (where it was still 3 feet down or so). Dug down and cut the pipe, then dug an 8 foot pit maybe 4 feet in diameter in front of the new drain spot. Filled the hole with 4-6" rock, layered with landscaping material every 3 feet or so. Then covered the last 3 feet back with dirt.

Now the drain runs into the underground pit and soaks into the groundwater. No chance of freezing up. It's worked like a charm this year, and it's been a LOT colder than last year.


Dale

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"When tempted to fight fire with fire, remember that the Fire Department usually uses water." - anonymous