Agricultural and Biosystems Engineering
Daily household routines can be greatly impacted by on-site wastewater system backups. Heavy rainfall, spring snow melt, or extended rainy periods that result in high water tables can cause backups. Other factors such as lack of system maintenance, changed family size, careless flushing, new water-using devices, inadequate design and sizing, and age of the system all can add to the problem.
Derickson, Russell, "Solving On-Site Wastewater Treatment System Backups" (2002). SDSU Extension Extra Archives. 28.