A stinky but necessary job.
Depending on usage and number of people in residence, septic tanks need to be pumped out to remove accumulated sledge periodically

You will note that there are two holes here.
The one closest to the residence is the main tank.
That were the effluent goes first and where bacteria action takes place to break down materials naturally.

The overflow, mostly liquid, accumulates in the second tank.
From here the effluent flows out into the drain field.





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