Why so many local homes have aerobic systems
Aerobic treatment units are common across western Comal County, around Canyon Lake, Spring Branch, and Bulverde, because the soil is often too thin or rocky for a conventional drain field. An aerobic system uses an air pump to help bacteria break down waste, disinfects the treated water (usually with chlorine tablets), and then sprays it onto the yard through sprinkler heads.
Maintenance contracts and inspections
Texas rules generally require homeowners with aerobic systems to keep a maintenance contract with a qualified maintenance provider, with inspections on a regular schedule, typically three times a year. The provider checks the air pump, alarms, chlorinator, spray heads, and sludge levels, and files a report. Some counties allow trained homeowners to do part of the upkeep themselves; ask your county's permitting office if you're unsure what applies to you.
Common aerobic system problems
- Alarm light or buzzer: often a high water level, a failed air pump (aerator or compressor), or a tripped breaker
- Sewage or rotten-egg smell: frequently a failed air pump, which lets the tank turn anaerobic
- Spray heads running during the day: a timer problem, or a pump running on high water
- Soggy spots or puddles in the spray area: clogged or broken heads, or a system that's overloaded
- Chlorine tube empty: untreated water is being sprayed onto your lawn
What to tell the provider
Mention the brand of your system if you know it (it's often on the lid or control panel), whether an alarm is on, and whether your maintenance contract is current. If you recently bought the home, say so. The provider can help you set up a new contract.
Aerobic System Service & Maintenance FAQ
Can I let my maintenance contract lapse?
In most cases, no. Aerobic systems in Texas are generally required to be covered by a maintenance contract or an approved alternative, and lapsed contracts can be reported to the county. Ask a provider or your county permitting office about your specific situation.
What kind of chlorine goes in an aerobic system?
Spray systems use chlorine tablets made for wastewater disinfection, usually calcium hypochlorite. Pool tablets are a different chemical and shouldn't be used. Your maintenance provider can tell you what your chlorinator takes.