video FAQ

Video FAQ Series

What’s the difference between a septic tank and a sewage treatment plant? WES managing director and septic tank expert Mark Ward answers the frequently asked question as part of our ongoing Video FAQ series.

The difference between a septic tank and a sewage treatment plant? – Video Transcription

Mark Ward:

“The main difference is the quality of effluent that’s actually produced.

The septic tank will produce an effluent that’s not really treated. It’s quite high-strength, and therefore, it can only legally be discharged into a soakaway, so into the ground to be absorbed, whereas a treatment plant actually produces an effluent that is treated to a high standard.

So with the right environment agency permission, it could actually be discharged into a stream or flowing water course. So the difference, effectively, is the quality of effluent. The septic tank doesn’t really process the waste, it just separates out. The treatment plant treats it, processes it, then discharges it.”

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