I wrote in Yesterday’s adventures in drainfield discovery that I’d had a toilet clog and was confused since I’d just had my  system rejuvenated two years before.  I learned today that when they did the rejuvenation, they did it on the grey water tank, which is where the water goes for the washing machine, showers and bathroom sinks. I called them in 2011 when the guest bath tub filled with the water being expelled from the washing machine.   After doing my online research today, I am not convinced I needed to have the grey tank rejuvenated and filter added, but I did need the tank pumped.  I could be wrong, but it was my gut reaction. Now there’s a filter on it that will require regular maintence. What clogs the grey water filter is fabric softener, hair and washing machine lint.  A typical family washing machine produces enough lint each year to carpet an entire living room floor.  When John came out today, he quickly saw that the problem was with the black water tank (kitchen sink, toilets,) and not the grey water system he had worked on before.  We scheduled a pump out for tomorrow.  I took pics so I know where all my tanks are in the yard.  My buddy trimmed one giant eleangus that was too close to the tank.  I’m excited it’s a quick and easy fix!  I also learned that when it comes time to put in a new drainfield, the digging seems very doable.