My AWTS is silent — is that a problem?

Most systems run the blower on a cycle, so brief silence can be normal. Prolonged silence, especially with odour or an alarm, points to a failure and should be assessed.

Aerated Wastewater Treatment Systems (AWTS)

Aerated systems inject air to drive aerobic treatment, producing high-quality effluent — while the blower runs.

An AWTS uses a blower or aerator to keep the treatment chamber oxygenated, supporting bacteria that work far faster and more thoroughly than the anaerobic bacteria in a plain septic tank. Many systems then clarify and, in some cases, disinfect before discharging to irrigation.

The dependency on mechanical parts is the trade-off. When a blower fails, the process turns septic within days, and odour or an alarm is usually the first sign. Scheduled servicing is not optional on these systems.

Common AWTS faults

Blower or aerator failure
Diffuser blockage
Irrigation pump or float failure
Sludge build-up requiring de-sludging
UV lamp failure where disinfection is fitted
Control board and alarm faults

Frequently asked questions

My AWTS is silent — is that a problem?: Most systems run the blower on a cycle, so brief silence can be normal. Prolonged silence, especially with odour or an alarm, points to a failure and should be assessed.

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Septic Connect accepts septic and wastewater service requests and routes them according to participating provider coverage. Any inspection, pump-out, call-out, servicing, repair, parts or other charges are discussed and charged directly by the independent service provider.