What is an aerobic septic system and how does it work?

An aerobic septic system is a treatment system that uses oxygen and beneficial bacteria to break down waste more completely than conventional septic tanks. Instead of relying solely on gravity and anaerobic (oxygen-free) bacteria, aerobic systems pump air into the tank, creating an environment where bacteria can work faster and more thoroughly.

The treated wastewater is then distributed through either spray heads or a drip system into the soil, where it's further filtered and purified. Because aerobic systems treat waste more effectively, they're often required in areas with shallow groundwater or poor soil conditions—common in North Central Texas. The tradeoff is that aerobic systems require electricity and more regular maintenance than conventional systems.

Why does my alarm go off?

An alarm going off means something in your system isn't working as it should. Common causes include:

• High water level in the tank — the pump isn't keeping up, often due to pump failure or a clog
• Aerator not running — electrical issue or aerator motor failure
• Float switch malfunction — the switch that triggers the alarm is stuck or faulty
• Pump failure — the pump that distributes treated water has stopped working

Do not ignore the alarm. It's telling you the system isn't treating waste properly. A quick call to Coleman Aerobic Septic can diagnose the issue before it becomes a costly repair. Many homeowners wait too long, and small problems turn into big ones.

What causes septic odors?

Persistent odors around your septic system mean something isn't working right. Possible causes include:

• Aerator not running — without oxygen, bacteria can't process waste, and it becomes anaerobic (smelly)
• Clogged distribution system — treated water backs up in the tank instead of flowing out
• System overload — too much water entering the system too fast
• Damaged tank or pipes — leaks allow sewage to seep into the soil around your home
• Chlorine depletion — if your system uses chlorination, low chlorine levels reduce disinfection

Odors are a sign to call for service. They often indicate the system is backing up or not treating waste properly, which can create a health hazard and lead to system failure.

Why are my spray heads running nonstop (or not at all)?

Spray head problems usually point to one of these issues:

• Spray heads running nonstop: The pump is stuck on or the timer circuit has failed. This wastes water and can flood the drain field.
• Spray heads not spraying: The pump isn't running, the filter is clogged, or the spray heads themselves are blocked with mineral deposits or biofilm.
• Uneven spray: Some heads spray while others don't, usually because of clogs or pressure imbalances in the distribution lines.

While you can sometimes clear a clogged spray head yourself (turn off the system, remove the head, and rinse it), persistent issues need professional diagnosis. Coleman Aerobic's technicians can check the pump, timer, filter, and entire distribution system to find the real problem.

Do I need chlorine tablets?

Whether your system needs chlorine depends on your system design and local regulations. In Hood County and surrounding areas, many aerobic systems include chlorination as a final disinfection step before treated water enters the drain field or is discharged. This is especially common in systems near sensitive areas or in compliance-heavy jurisdictions.

If your system has a chlorine contact chamber, you'll need to maintain chlorine tablets regularly. Low chlorine levels reduce disinfection and can affect water quality. High chlorine levels can damage the system or the soil.

If your system doesn't require chlorination, adding it unnecessarily can cause problems. During a maintenance inspection, Coleman Aerobic's technicians will check your system design and advise whether chlorine is needed and, if so, what level to maintain.

How often should I have my system inspected?

Most homeowners should have an aerobic septic system inspected at least once per year. Some jurisdictions in Hood County and Somervell County require annual inspections for compliance reporting.

Why annual inspections matter:

• Catch small problems before they become expensive repairs
• Verify the system is operating efficiently and within regulatory standards
• Check aerator function, pump performance, and electrical components
• Ensure chlorine levels (if applicable) are correct
• Document compliance for county records

Coleman Aerobic offers residential maintenance contracts starting at $200 per year, which includes regular inspections and maintenance. This is a cost-effective way to stay compliant and avoid emergency repairs.

What's the difference between spray and drip distribution?

Both spray and drip systems distribute treated wastewater into the soil, but they work differently:

• Spray systems use above-ground or shallow spray heads to spray treated water across the drain field. They're visible and can be inspected easily, but they require more maintenance and can be affected by wind or freezing weather.
• Drip systems use buried tubing with emitters that slowly release treated water directly into the soil. They're less visible, require less maintenance, and are more efficient in poor soil conditions or steep terrain.

Which is better? It depends on your property, soil conditions, and local regulations. Drip systems are increasingly popular in North Central Texas because they work better in clay-heavy soils and areas with shallow groundwater. If you're considering a system upgrade or replacement, Coleman Aerobic can recommend the best option for your property.

How long does a septic system last?

A well-maintained aerobic septic system can last 20–30 years or more. The lifespan depends on:

• Regular maintenance — annual inspections and timely repairs extend system life significantly
• Proper use — avoiding flushing non-degradable items and limiting water waste
• Quality of installation — a properly designed and installed system lasts longer
• Soil conditions — good drainage and appropriate soil depth support longevity
• Component quality — pumps, aerators, and controls have different lifespans (typically 7–15 years) and will need replacement during the system's life

The key is staying on top of maintenance. Neglected systems fail early and cost far more to replace. Coleman Aerobic's maintenance contracts are designed to keep your system running reliably for decades.

What shouldn't go in my septic system?

Aerobic systems are more robust than conventional septic tanks, but they still have limits. Avoid flushing or draining:

• Non-flushable items: paper towels, wipes (even "flushable" ones), feminine hygiene products, diapers, cotton swabs
• Grease and oils: cooking oils, butter, lard — they clog pipes and tank internals
• Chemicals: paint, solvents, pesticides, drain cleaners — they kill beneficial bacteria and contaminate groundwater
• Medications: in large quantities, they can disrupt bacterial processes
• Harsh cleaners: excessive bleach or antibacterial soaps can reduce bacterial activity
• Food waste: in large quantities; use a garbage disposal sparingly or not at all
• Coffee grounds and eggshells: they don't break down and can clog the system

Simple rule: if it didn't come out of your body or isn't toilet paper, think twice before flushing. When in doubt, throw it in the trash.

What does county compliance mean?

In Hood County, Somervell County, and Erath County, aerobic septic systems are regulated by county environmental health departments. Compliance means:

• Regular inspections: most jurisdictions require annual inspections and documentation
• Maintenance records: you must keep records of service visits and repairs
• System certification: the system must be installed by a licensed contractor and certified as meeting county standards
• Reporting: inspection results and maintenance records are filed with the county
• Repair notifications: significant repairs or modifications must be reported to the county

Why it matters: Non-compliance can result in fines, system shutdown orders, or requirements to install a municipal sewer connection (expensive). Compliance also protects groundwater and public health.

Coleman Aerobic handles all compliance documentation and filing for their maintenance contract customers. Their office staff ensures paperwork is submitted on time, so you don't have to worry about it.