Asked before every dig
These come from real calls across the county. Pricing lives on the cost guide and the state process has its own page; this page covers the rest.
How long does a septic system last?
A well-built system in decent soil gives thirty to forty years from the drainfield and often more from a concrete tank. The variables you control are water discipline and pumping: a tank pumped every three to five years protects the field from the solids that end fields early. The variable you do not control is the soil, which is why installs live or die at the site evaluation.
What actually happens at the soil evaluation?
A soil professional reads your ground: texture and structure down the profile, the loading rate that sets trench length and the stains that mark where water sits in winter. The result classifies your parcel for a conventional, pump-assisted or mound system. It is the single most important document in the whole project and it costs a fraction of what it saves.
How often should a tank be pumped in this county?
Every three to five years for a typical family, sooner for big households on smaller tanks. Our sandy soils forgive a lot, but they do not forgive solids reaching the field. The pump-out is the cheapest insurance in the trade: a few hundred dollars against a $4,500 to $9,000 field.
What should never go down the drain on a septic system?
Grease is the headline, and wipes of every kind including the ones labeled flushable. Add paint, solvents, softener backwash routed wrong and long antibiotic regimens flushing to the tank, all of which punish the bacteria doing your treatment. The system is a living process; feed it like one.
Do garbage disposals and septic systems get along?
They coexist if the tank was sized knowing the disposal exists and the pumping schedule respects it. A disposal roughly doubles the solids entering the tank. If you use one daily, tell us at design time and pump a year sooner than the standard advice.
Will heavy rain flood my septic system?
A healthy field sheds normal rain fine. Trouble comes when a field already near saturation meets a tropical week, which happens here, or when gutters and yard grading dump roof water directly over the trenches. Routing surface water away from the field is free performance, and we check drainage lines at every site visit.
Can I drive or build over my drainfield?
No to both, and it matters more than people expect. Vehicle weight compacts the trenches and sheds oxygen out of the soil doing your treatment, and a shed or slab caps the evaporation the design counted on. Grass, gardens without irrigation and foot traffic are all fine.
We are buying a house with septic. What should we check before closing?
Three things: an inspection with the tank opened, not a drive-by; the pumping history if the seller has it; and the state record showing what was permitted. A system that passes those three is a normal asset, not a liability. We do pre-purchase inspections and will tell you plainly what remaining life looks like.
A question we did not cover?
Call (803) 395-8683 or send the form and Orangeburg County Septic will answer it straight, including when the honest answer is that your system is fine and needs nothing.