How can you tell if a septic tank is "sluggish" under 2 feet of snow? If
water is backing up it is possible the drainage or weeping tiles or pipes
are frozen up or clogged. When was the last time the tank was pumped out
to get rid of the sludge that slowly fills up the tank.
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Bingo! When was the last time you pumped and inspected the tank? Depending
on diets, cleaning should be done every couple of years. Freezing can slow
down the leach lines, but failing to clean the tank can clog it!