New septic system installation in the Greenville area typically costs between $8,000–$20,000, depending on several factors:
Here’s what the installation process looks like from start to finish:
Before anything is installed, a soil evaluation (percolation test) must be performed. This determines whether your soil can absorb effluent and what type of system is required. In Greenville County, this is coordinated through the SC DHEC.
Based on the perc test results, a licensed professional designs the system and submits plans to Greenville County for permitting. Permits are required before any excavation begins.
The septic tank (typically concrete, fiberglass, or polyethylene) is set in an excavated pit. The tank is sized based on your home’s bedroom count — Greenville County typically requires a minimum 1,000-gallon tank for a 3-bedroom home.
Distribution lines are laid in gravel-filled trenches. The drainfield disperses treated effluent into the soil — this is the most critical (and expensive) part of the system to protect long-term.
A Greenville County inspector approves the installation before the system is covered. After approval, the site is backfilled and graded.
Yes — absolutely. Greenville County requires permits from the SC Department of Health and Environmental Control (DHEC) for all new septic installations and major repairs. Installing without a permit can result in fines and may cause problems when selling the property.
Not every lot in Greenville County qualifies for a standard gravity-fed system. If your soil doesn’t pass a standard perc test, you may need an alternative system:
If you’re building on land in Greenville County or need to replace a failing system, call Greenville Septic Service at (864) 659-2380. We’ll assess your property, walk you through the permit process, and give you an honest estimate — no pressure, no surprises.