agreed, and the 1st thing you should do if you have a septic is throw the garbage disposal out the window. garbage is disposed of in the garbage.
and that carries over to the feminine product area. if the women of the house won't comply, then the septic bill costs are their responsibility.
nothing that comes out of your **** will plug anything but the toilet.
solids that get pumped out are things like corn kernals and fiber and seed husks that bacteria can't break down.
Greases that float on the top of the tank (cause grease is lighter than water) should be minimized too. wipe out the frying pan and while this should be obvious, NEVER allow the cooking grease to be dumped down the drain.. not even with 'plenty of hot water'
had to change that behavior with Ms Danfromsyr when we first moved out.. *SMH. caught her plugging the sink trap with burger grease.. made her pull and clear it with me.. cooking grease goes in a soup/veggie tin then the trash.. and the frying pan gets wiped out/off with a paper towel of it's grease..
need I remind. that ALL GREASE FLOATS and is BAD for septics.. IT NEVER (should) leave the tank.. that's problem #1. and if grease leaves the tank then that's a problem #2 as it will plug up the absorbsion of the leaching field.
it's because JOHN and JAN Q PUBLIC can not be trusted to abide by simple procedures that communities require septics to be pumped on far greater intervals than should be necessary.
and yes more modern septic installations have a outflow filter that needs to be pulled out and cleaned off in a regular interval. far less work than say a pool and yet people balk at it because 'poop'.. which is really funny when the things and duties that god graced the finer *** with having to endure and deal with. that they balk at other 'dirty' things.
Your tank will always be full, or nearly full, because the outlet is just below the top of the tank. There will be "clean" water, probably with a layer of grease floating on top, on top of the solids in the bottom. The depth of the solids in the bottom will depend on how much waste is being dumped into the tank. The only time you'll have trouble is if you dump more solids than the bacteria can consume.
having it pump will not solve the problem, you got more water going in than going out the field lines, there should be no water in the inlet line except when the toliet flush. the water enter the tank, the solid sinks in first chamber the water goes over the baffle and then out the field lines when new water comes in
my system has not been pump in 21 years, my mom was build in 72 and never been pump.
a correct system is maintance free, pumping is just so they get money from you