Aerobic Septic Systems

An aerobic treatment unit (ATU) uses an air pump to add oxygen to wastewater, so oxygen-loving bacteria can break waste down more completely than in a conventional septic tank. The treated water is typically disinfected with chlorine and then dispersed through spray heads or drip lines. Aerobic systems are common in the Hill Country, where shallow soil and rock can rule out a traditional drain field.

• Aerobic systems must be maintained under a written contract with a TCEQ-licensed maintenance provider.
• The provider must report to the owner and the local permitting authority at least every four months (every six months for systems with qualifying electronic monitoring).
• Two years after installation, homeowners may be allowed to maintain their own system, unless the local permitting authority requires otherwise.
• In Comal County, septic permits are handled by the Comal County Engineer's Office.

Aerobic systems that use chlorine disinfection need calcium hypochlorite tablets certified for wastewater treatment. Never use swimming pool tablets in your septic chlorinator: TCEQ warns they are made from a different chemical and are not approved for wastewater disinfection.

• The alarm light or buzzer is on
• The air pump (aerator) isn't running
• Strong sewage odor near the tanks or spray area
• Spray heads discharging cloudy, discolored, or smelly water
• Soggy ground or pooling near the tanks or spray field
• Slow drains or backups inside the home

If your aerobic system needs service now, contact the licensed maintenance provider listed on your maintenance contract. For slow drains, clogs, and other plumbing problems inside your home, call Ruben at (210) 425-1360. For warning signs every septic owner should know, see our Septic Guide.

Ruben is a Texas licensed master plumber with 40 years of experience serving Canyon Lake, New Braunfels, and the surrounding Hill Country. We'll announce aerobic septic services on this page once the required licensing and authorization are complete. Until then, we're here for your plumbing needs at (210) 425-1360.