There’s no shortage of septic “advice” floating around online—and a lot of it is flat-out wrong. Following bad guidance can shorten your system’s life, cost you thousands, or even pose a health hazard.
Let’s bust the most common septic myths and replace them with facts that will help keep your system running right.
🛑 Myth #1: You Don’t Need to Pump Your Septic Tank If It’s Working Fine
Fact: Even if everything seems to be working, solids are still building up in the tank. Wait too long, and they’ll clog the drain field. Pumping every 3–5 years is essential.
🛑 Myth #2: Septic Additives Eliminate the Need for Pumping
Fact: Additives might boost bacteria—but they don’t remove solids. Only pumping removes sludge. Think of additives as vitamins, not surgery.
🛑 Myth #3: It’s Okay to Flush Wipes and Hygiene Products if They Say “Flushable”
Fact: “Flushable” doesn’t mean septic-safe. These products don’t break down and often clog your pipes or tank.
🛑 Myth #4: Septic Systems Smell Bad All the Time
Fact: A healthy, functioning system should never produce strong odors. If you smell something, it’s time to inspect for leaks, backups, or overflows.
🛑 Myth #5: It’s Fine to Build Over a Septic Tank or Drain Field
Fact: Heavy structures can crush pipes and compact soil, leading to expensive failures. Always keep these areas clear and accessible.
🛑 Myth #6: If You Use a Garbage Disposal, It Won’t Hurt the System
Fact: Disposals add extra solids and grease that strain your system. If you use one, you’ll need to pump more often.
🛑 Myth #7: As Long as Things Are Draining, Everything’s Fine
Fact: Drainage can still occur even if the tank is nearly full or the drain field is failing. Slow drainage and gurgling are early red flags.

✅ What You Should Actually Do
- Pump your tank regularly
- Flush only septic-safe waste
- Follow an annual maintenance plan
- Inspect early and often—especially if anything seems off
Final Thought
Don’t fall for septic myths that can ruin your system and your wallet. Stick to what’s proven, stay on schedule, and treat your septic system like the underground VIP it is.
Not sure where to start? Read our full guide on how to care for your septic system.