SearchAsk us anythingarrow rightHow deep is my leach field?A typical drainfield trench is 18 to 30 inches in depth, with a maximum soil cover over the disposal field of 36 inches.Let's Get It Fixed!Our virtual experts can diagnose your issue (for free!) and resolve simple problems.Chat with a live expertChat nowCall 1 (855) 466-3948Call nowRATESHARECopy linkTwitterFacebookmagnifying glassLink copied to clipboard.SUBMIT AN ANSWERShop Recommended ProductsShop HomeX Recommended ProductsRELATED QUESTIONSHow deep is my drain field?A typical trench of the septic drainage field is 18 to 30 inches deep, with a maximum floor cover on the 36 or USDA disposal field, 2 feet to 5 feet deep.How deep are leach field lines?Depth. Place the tubes in the lixivia field at least 6 inches and more likely between 18 and 36 inches deep, depending on Clemson's cooperative extension. Each lixivia field requires individual design, such as underground and underground tables, to vary from state to state and within states.How close can leach field be to house?Its plan of the site of the septic system is typically designed at the top of its state of ownership showing the back of the septic tank with the 5-10 foot tank of the house, the leaching field of at least 20 feet of the house, at least 100 feet of wells and streams, 25 feet of dry clay, and 10 feet of the property.How big should a leach field be?A typical septic trench is 18 to 30 inches deep, with maximum coverage in the 36 or USDA disposal field, from 2 feet to 5 feet deep.How do I find my leach field?Start the search for septic tanks at home. Follow the drainage lines from tubs to septic tanks, which is usually 10 to 20 feet from the outside of the houses. At the end of the tanks in front of the house, the drainage line leads to the leaching field. Check the natural slope of the field to locate the leaching field.