dispersion trench, definition of

Dispersion Trench

A Dispersion Trench is a method by which effluent after processing is distributed back into the environment in a way which reduces environmental impact. They often positioned so that the effluent is distributed by a grid of trench pipes into the soil directly; the aim being that the effluent never gets to the surface.


They are typically positioned such that the danger of run off into creeks, waterways and natural landscapes is minimized. This can often be achieved by placing the trenching in a lawn in a residential context.

Related Tags: septic system, waste water

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