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Septic Clean Out Essentials: Understanding Your Tank's Normal Operating Level

Carolyn Innie • Feb 29, 2024

Many homeowners become concerned and call for a clean out when they think their septic tank is "full." What they don’t realize is that a certain volume of sewage is essential for the system's proper function and so it may always appear to be full. This article delves into the essentials of septic clean outs, shedding light on the normal operating level of septic tanks and dispelling common misconceptions.

a man is opening a septic tank cover in the dirt

Understanding Septic Systems and Their Function

Septic systems are underground wastewater treatment structures that use a combination of nature and proven technology to treat household wastewater from bathrooms, kitchen drains, and laundry. A key component of this system is the septic tank, which separates solids from liquids, allowing the liquid effluent to be dispersed to a drain field where it can be further treated by the soil and natural sunlight. Proper understanding and maintenance of these systems, often by professionals such as RCI Septic Service, are paramount for their efficiency and longevity. 


The Concept of Normal Volume in Septic Tanks – It Appears Full

A common misconception among homeowners is the alarm raised when a septic tank appears full. In reality, septic tanks operate within a normal volume level, which is crucial for the breakdown and treatment of waste. When the cover is removed from the septic tank, the fluid level should be below the inlet pipe which is approximately 8” down from the cover. The "normal" volume allows for the separation of solids, liquids, and scum, with bacteria playing a vital role in decomposing the solids. This balance is essential for the system's functionality and prevents the need for frequent clean outs. Understanding the dynamics of your septic tank can prevent unnecessary concerns, but having professionals who regularly monitor and pump your system will also give you peace of mind that proper levels are being maintained. 

Signs Your Septic Tank Needs a Clean Out

Recognizing when your septic tank requires a clean out is vital to avoid potential problems. Signs that indicate a need for attention include:

  • Slow draining sinks and toilets
  • Unpleasant odors emanating from the drain field
  • Water pooling in the yard
  • Alarms from a septic tank pump (if installed)


Ignoring these signs can lead to overflows, backups, and environmental contamination, necessitating emergency services.

a hole in the ground with a white line around it for a septic inspection

The Process of Septic Clean Out

A septic clean out involves pumping out the contents of the tank to remove the buildup of solids and sludge. This process is crucial for restoring the tank's normal operating capacity and maintaining the efficiency of the septic system. RCI Septic Service performs this task giving homeowners and businesses the peace of mind they need regarding the function and maintenance of their septic system. Remember, regular clean outs and inspections can prevent system failures and extend the life of your septic system.

FAQs: Common Questions About Septic System Services

  • What is the difference between septic pumping and cleaning?

    The terms pumping and cleaning are essentially the same.  RCI Septic Service pumps/cleans out all liquids and solids from the tank as well as performs a visual check of your system, leaving you with a completed service order indicating the health of your system and any findings during service.

  • How often should a septic tank be cleaned out?

    It varies depending on usage and size, but generally, we recommend yearly clean outs for households of 5 or more, every 2 years for 3-4, and every 3 years for households of 1-2 people. 

    Septic clean out
  • Can I maintain my septic system without professional help?

    While regular maintenance tasks like conserving water and avoiding flushing harmful materials can be managed by homeowners, professional inspections and clean outs are important for optimal system health.

  • What are the signs that my septic system is failing?

    Signs include sewage backup, slow drains, gurgling sounds in plumbing, pooling water near your tank or drain field and foul odors, indicating that professional assessment is required immediately.

Maintenance Tips Post-Clean Out

After a professional septic clean out, follow these maintenance tips to ensure your system remains in good condition:

  • Conserve water to reduce the load on the septic system.
  • Avoid flushing non-biodegradable materials.
  • Regularly inspect and maintain your drain field; RCI performs a visual inspection during every pump or clean out


By understanding the essentials of your septic system, recognizing when it needs attention, and adhering to post-clean out maintenance tips, you can enhance the longevity and efficiency of your septic system. For professional services, contact RCI Septic Service and we will be more than happy to help you with septic system maintenance.



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