Hurricane season runs from June 1 through November 30, and here in the Lowcountry, heavy rain and storm surge can push even a healthy septic system past its limits. Saturated soil, flooded drain fields, and power outages can all end in a sewage backup, but a little preparation goes a long way. As a family-owned septic company in Summerville, SC, serving the Lowcountry since 1969, here’s what we tell our neighbors every storm season.
Why Hurricanes Are So Hard on Lowcountry Septic Systems
Septic systems depend on gravity and dry soil. Wastewater flows into the tank, and liquid filters out through the drain field, where soil naturally treats it.
Summerville and surrounding Berkeley, Charleston, and Dorchester counties already sit on a high water table. When a tropical storm dumps 10 or more inches of rain, the soil around your drain field becomes fully saturated. Wastewater has nowhere to go, so it can back up into tubs, toilets, and floor drains, or surface in your yard. Pump-assisted systems face an added risk: when the power goes out, wastewater stops moving entirely.
Before the Storm: Pump, Inspect, and Protect
The single best thing you can do is schedule septic tank pumping services in Summerville, SC, before the first storm forms in the Atlantic. A recently pumped tank has extra holding capacity that buys valuable time when the drain field can’t accept water.
Your pre-storm checklist:
- Pump the tank if you’re due. Most residential tanks need pumping every 3 to 5 years.
- Get an inspection. A technician can spot cracked lids, root intrusion, and failing baffles before floodwater turns a small problem into a sewage backup.
- Mark your tank and drain field. Use flags or stakes so cleanup crews and vehicles stay off them after the storm.
- Secure the lids. Loose or damaged risers let floodwater and debris pour into your tank.
- Divert runoff. Make sure gutters and downspouts drain away from the drain field, not toward it.
During the Storm: Cut Your Water Use
Once heavy rain starts, treat your septic system gently. Every gallon you send down the drain competes with floodwater for space. Hold off on laundry and dishwashers, take shorter showers, and flush only when necessary. If water starts draining slowly, stop using it altogether; that’s the first warning sign of a system under stress.
After the Storm: What to Check Before Life Goes Back to Normal
Don’t rush to catch up on laundry the moment the skies clear. If the ground over the drain field is still flooded or spongy, heavy water use can still cause a backup days after the storm passes.
Walk your property and look for standing water, sewage odors, or unusually green grass over the system. Never pump the tank while the ground is flooded; an empty tank can float out of saturated soil and break the connecting pipes. If anything seems off, call a licensed septic company in Summerville, SC, to inspect the system before returning to normal use.
Frequently Asked Questions
Should I pump my septic tank before hurricane season?
Yes, if you’re at or near the 3- to 5-year mark. Scheduling septic tank pumping services in Summerville, SC, in late spring gives your tank maximum reserve capacity before storm season peaks in August and September.
Can I use my septic system during a power outage?
If you have a conventional gravity system, yes, but sparingly, if your system uses a pump, avoid running water until power is restored; wastewater will collect in the tank with nowhere to go.
What should I do if my yard floods over the drain field?
Reduce household water use and stay off the area. Once the water recedes and the soil firms up, the system usually recovers on its own. If drains stay slow or odors linger, schedule an inspection with a septic company in Summerville, SC.
Why shouldn’t I pump my septic tank during a flood?
An empty concrete or plastic tank in saturated soil can become buoyant and shift or “float” upward, damaging inlet and outlet pipes. Wait until floodwater drains away before pumping.
How do I know if my septic system was damaged by a storm?
Watch for slow drains, gurgling pipes, sewage smells indoors or outside, wet spots or lush grass over the tank, and backups at the lowest drains. Any of these calls for a professional inspection.
Ready for Storm Season? We’re Here to Help
Hurricane prep isn’t just plywood and bottled water; your septic system deserves a spot on the list. Knight’s Companies has provided septic tank pumping services in Summerville, SC, and across the Lowcountry for over 50 years, seven days a week by appointment. Call (843) 821-7600 to schedule your pre-season pumping and inspection today.