Septic Backup: What to Do (and What Not to Do) Right Now

Sewage backing up into your home is one of the most stressful things a homeowner can face. But how you respond in the first hour matters enormously. Here's a clear, step-by-step guide from our technicians on exactly what to do — and what to avoid — when your septic system backs up.

Step 1: Stop Using Water Immediately

The moment you notice a backup, stop all water use in the home. Every gallon of water you send into the system makes the situation worse — it pushes more sewage toward your drain lines and into living spaces. Tell everyone in the household: no flushing, no running water, no showers, no laundry until the system is addressed.

Step 2: Call for Emergency Service Right Now

Call a licensed septic company immediately. A backup is not a situation to wait on or try to manage overnight. Certified Septic provides 24/7 emergency service throughout Lee County — call 239-510-4040 any time, day or night. While you wait, keep children and pets away from any areas where sewage has surfaced, both inside and outside.

Step 3: Do NOT Try to Fix It Yourself

Do not attempt to open your septic tank, dig near the drain field, or pour chemical drain openers into the system. Septic tanks produce methane and hydrogen sulfide — both toxic gases that can render you unconscious within seconds in an enclosed space. Opening a septic tank without proper safety equipment is extremely dangerous, and deaths from septic tank entry happen every year. Leave it to licensed professionals.

Step 4: Protect Your Health

If sewage has entered your home, treat the affected area as a biohazard. Wear rubber gloves and boots if you must be near the affected area. Sewage contains bacteria, viruses, and pathogens that cause serious illness. After the emergency is resolved, affected hard surfaces should be thoroughly disinfected. Soft materials — rugs, carpet, upholstered furniture — that have been contaminated should be discarded.

What Causes Septic Backups?

The most common causes we see on emergency calls across Lee County:

• Overfull tank — The most common cause by far. The tank hasn't been pumped in too long and has no remaining capacity.
• Blocked inlet or outlet baffle — A failed baffle creates a physical blockage that prevents normal flow into or out of the tank.
• Saturated drain field — Heavy rain or a seasonally high water table has reduced the drain field's ability to absorb effluent.
• Clogged drain line — A blockage in the line between the house and the tank, often from tree roots, accumulated grease, or debris.
• Permanently failed drain field — A drain field that can no longer accept any effluent due to soil clogging from years of overloading.

What Happens After We Arrive?

Our technicians will locate the tank, pump it down to relieve the immediate pressure, and then diagnose the root cause. We'll give you a clear explanation of what happened and present your options — before any additional work begins. No surprises, no high-pressure tactics. Just honest service from a company that's been serving Lee County for over 20 years.