Why coffee grounds are on the NO Flush list
*Would add more solids to your septic system
*Can cause plumbing issues and clogs
*Can upset the PH level in your system
Coffee grounds can take up to 3 months to breakdown, when added to soil, put in a septic tank it can take even longer.
There are many alternative uses for used coffee grounds. They are great for veggie plants and some flowers. They keep grubs and other pests away. Coffee Grounds add massive levels of nitrogen to the soil, as well as other minerals such as magnesium, potassium and calcium. Adding grounds to your compost bin will enrichen it and encourage earthworm activity.
Please consider an alternative vs flushing coffee grounds and avoid the need for more frequent septic pumpouts.