Septic question

  • buck-slayer
    Posts: 1499
    May 12, 2022 at 3:11 am #2123772

    I have a perfect circle of green grass of a 6′ radius about a foot wide around my vent pipe. Septic is around 45 yrs old and working fine. Only problem has been the pipe that leads to field froze twice but had that replaced from cast to an insulated pvc about 15 yrs ago and no freeze up since. What would make this circle?

    cheers
    Posts: 333
    May 12, 2022 at 6:21 am #2123786

    My guess is that it is heat escaping the vent keeping the ground thawed and allowing growth. Does the circle dissipate in summer?

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