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• UNIVERSITY Septic System Management Plan for Above Grade Systems OF MINNESOTA ;,Ar ,,.. 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 undigested They have a garbage disposal inside. 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 maintenance home) 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. • Water from these sources will • When replacing,consider using a demand-based 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 -