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UNIVERSITY OF MINNESOTA Septic System Management Plan for Above Grade Systems Water -Use Appliances and Equipment in the Home Appliance Impacts on System Management Tips Uses additional water. Use of a garbage disposal is not recommended. Adds solids to the tank. Minimize garbage disposal use. Compost instead. Garbage disposal Finely -ground solids may not settle. To prevent solids from exiting the tank, have your Unsettled solids can exit the tank tank pumped more frequently. and enter the soil treatment area. Add an effluent screen to your tank. Washing several loads on one day Choose a front -loader or water -saving top -loader, uses a lot of water and may overload these units use less water than older models. your system. Limit the addition of extra solids to your tank by Overloading your system may using liquid or easily biodegradable detergents. Washing machine prevent solids from settling out in Limit use of bleach -based detergents and fabric the tank. Unsettled solids can exit softeners. the tank and enter the soil treatment Install a lint filter after the washer and an effluent area. screen to your tank Wash only full loads and think even -- spread your laundry loads throughout the week. Powdered and/or high -phosphorus Use gel detergents. Powdered detergents may add detergents can negatively impact the solids to the tank. Dishwasher performance of your tank and soil Use detergents that are low or no -phosphorus. treatment area. Wash only full loads. New models promote "no scraping". Scrape your dishes anyways to keep undigestedTheyhaveagarbagedisposalinside. solids out of your septic system. Finely -ground solids may not settle. Expand septic tank capacity by a factor of 1.5. Grinder pump (in Unsettled solids can exit the tank Include pump monitoring in your maintenancehome) and enter the soil treatment area. schedule to ensure that it is working properly. Add an effluent screen. Large volume of water may Avoid using other water -use appliances at the same Large bathtub overload your system. time. For example, don't wash clothes and take a whirlpool) Heavy use of bath oils and soaps can bath at the same time, impact biological activity in your Use oils, soaps, and cleaners in the bath or shower tank and soil treatment area. sparingly. Clean Water Uses Impacts on System Management Tips High -efficiency Drip may result in frozen pipes Re-route water directly out of the house. Do not furnace during cold weather. route furnace discharge to your septic system. Water softener Salt in recharge water may affect These sources produce water that is not sewage and Iron filter system performance. should not go into your septic system. Reverse osmosis Recharge water may hydraulically Reroute water from these sources to another outlet, overload the system. such as a dry well, draintile or old drainfield. When replacing, consider using a demand -basedWaterfromthesesourceswill Surface drainage overload the system and is recharge vs. a time -based recharge. Footing drains prohibited from entering septic Check valves to ensure proper operation; have unit system. serviced per manufacturer directions 5-