If your report states “Sludge elevated in pump tank relative to treatment tank levels, these systems require slow consistent flows to work best.” it means that your system has had some recent high flow events. It could be that you had company recently, so therefore the bathrooms were having more use than normal. You did all of your laundry on one day or there is water getting into your system other than through the house.
The best way to handle this is to spread out your loads of laundry. Do a load in the morning and another in the afternoon versus doing them all back to back. Make sure that water is not puddling on top of the system during rain events. Make sure that all leaking toilets and faucets are fixed immediately. Large garden tubs draining all at once cause massive water flows.
For more recommendations, see Septic System Problems under Steven’s Notes.