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UNIVERSITY Septic System Management Plan for Above Grade Systems OF MINNESOTA 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. Yom system. . Limit the addition of extra solids to your tank by • Overloading your system may using a liquid or easily biodegradable detergents. Washing machine prevent solids from settling out in . Install a ling filter atter the washer and an effluent the tank. Unsettled solids can exit screen on your tank. the tank and enter the soil treatment . Wash only full loads. area. . Limit use of bleach -based detergents. . Think even — spread your laundry loads throughout the week. . The rapid speed of water entering . Install an effluent screen in the septic tank to 2"a floor laundry the tank may reduce performance. prevent the release of excessive solids to the soil treatment area. . Be sure that you have adequate tank capacity. . 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 Link 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 Large bathtub overload your system. same time. For example, don't wash clothes and (whirlpool) • Heavy use of bath oils and soaps can take a 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 into a sump pump or directly out furnace during cold weather. of the house. Do not route furnace recharge to your septic system. . Salt in recharge water may affect . These sources produce water that is not sewage Water softener system performance. and should not go into your septic system. Iron filter . Recharge water may hydraulically . Reroute water from these sources to another Reverse osmosis overload the system. outlet, such as a dry well, dmintile or old drainfield. When replacing consider using a demand -based • Water from these sources will likely Surface drainage overload the system. recharge vs. a time -based recharge. Footing drains Check valves to ensure proper operation; have unit serviced per manufacturer directions -5-