Risers on top provide access for maintenance ... Do learn the location of your septic tank and drainfield (the system of underground pipes and filtering materials through which wastewater flows ...

"so we invented the RIDGE PIPE ADAPTER. Our design would allow a property owner to easily install a septic tank riser that could be easily accessible near, at, or above ground level." The patent ...

"We wanted to create an improved pipe adapter that would be used to permit the vertical stacking of septic tank risers," said ...