Septic Tanks and Sewage Pumps

Where it's possible, it is best to connect your foul drains straight into an existing drain or sewer. However, where it is not possible you will need either a Sewage Pumping Station, a Septic Tank or a Sewage Treatment Plant.

A Sewage Pumping Station simple collects the sewage in a holding tank, and uses a pump to push the sewage uphill to an existing drain. The holding tank is designed to store at least 24 hours of sewage, and the pump is normally connected to some form or monitoring system that will let you know when it needs to be maintained. 

A Septic Tank is a basic form of sewage treatment, which collects the sewage in a large tank and allows the solid particles to settle in the bottom. the remaining liquid (final effluent) then flows out of the Septic Tank into a drainage field (a specialised soakaway) where the microbes in the final effluent and the existing ground work together to treat the final effluent. Because these are usually unpowered, unmonitored and can cause significant environmental pollution if not cared for; septic tanks are very tightly regulated and are forbidden in certain locations.

A Sewage Treatment Plant is similar to a septic tank, but includes additional systems which clean the final effluent before it is discharged. This means that the final effluent can be put into a normal soakaway, or even into a nearby watercourse. Sewage Treatment Plants are normally fitted with monitoring systems which let you know when they need maintenance.

We have experience designing all of these systems, so please contact us for advice
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