A septic system's lifespan typically ranges from 15 to 40 years, with a common average of 20 to 30 years. The longevity heavily depends on the tank's material, maintenance diligence, and usage habits. With proper care, lifespans can reach the upper end of this range.
Lifespan by Tank Material:
Concrete: 20 to 40 years
Plastic or Fiberglass: 30 to 40 years
Steel: 15 to 20 years
To maximize your system's lifespan, follow these maintenance best practices:
Regular Pumping and Inspections: Have the tank pumped every three to five years and schedule professional inspections regularly.
Mindful Usage: Only flush human waste and toilet paper. Avoid putting items like cat litter, paper towels, cigarette butts, fats, grease, oils, or coffee grounds down your drains.
Avoid Chemicals: Do not pour harsh chemicals into the system.
Water Conservation: Reduce the amount of wastewater your system has to process.
Protect the Drain Field: Avoid driving or building heavy structures over the drain field area.
Common signs that a septic tank is full include plumbing issues, odors, and changes in your yard. You may notice wastewater or sewage backing up into your home's drains, or that sinks, tubs, and toilets are draining slowly. Gurgling or bubbling sounds from the pipes are also a key indicator. Outside, you might smell foul sewage odors around your house or the septic tank area. Look for pooling water, spongy soil, or a marshy environment around the drain field. Another tell-tale sign is a patch of grass over the septic system that is suddenly lusher and greener than the rest of your lawn. If you notice any of these signs, you should contact a septic professional for an inspection and pumping.
Some flushable wipes companies say they are designed to disintegrate within a few hours to a few days after being flushed. These wipes allegedly use materials that are more water-soluble than traditional wipes. However, many experts have raised concerns that even so-called "flushable" wipes do not break down as easily as claimed and can contribute to clogs and blockages in sewer systems.
To prevent plumbing and sewer problems, avoid flushing wipes, even those labeled as flushable. Instead, dispose of them in the trash. This can help prevent costly plumbing issues and reduce the strain on wastewater treatment systems.
You only need to pump the septic tank. The leach field allows the liquid and waste to naturally seep into the ground, so there’s no need to pump the leach field. You should call a local septic tank pumping service to remove the materials from the tank every three to five years. Without pumping the septic tank occasionally, solids could flow into the leach field pipes and clog them.
We’ve explained how deep-rooted plants can damage a septic tank from the outside, but plenty of things can ruin it from the inside, too. For example, flushing bulky items (like paper towels, diapers, and wipes) can clog your septic tank. Cooking oil, grease, and household chemicals can also harm your system. And since a new septic system costs between $3,460 and $11,450, it’s worth following these guidelines.
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