05-19-2021 Septic Design - Laserfiche WebLink

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SECTION 13: Forms and Reference ■ 13-81 UNIVERSITY Septic System Management Plan for Below 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. 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 • Install a lint filter after the washer and an effluent the tank. Unsettled solids can exit screen to 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 prevent 2`1 floor laundry the tank may reduce performance. 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 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 into a sump pump or directly out of furnace during cold weather. the house. Do not route furnace recharge 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 likely • When replacing, consider using a demand -based 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