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Drainage & Plumbing

Kingspan Klargester’s New Shallow Dig Septic Tanks – making installation easier and cheaper


Kignspan Klargester, the global-leading specialists in the design and manufacture of off-mains drainage solutions, has launched the Sigma shallow dig septic tank – a cylindrical shaped tank with a lower-profile for quicker, cheaper, off-mains installations.

The new design of the Sigma tank means that it requires a shallower dig and less excavation, as well as far less peashingle or concrete backfill to secure it in place.

Sigma septic tanks are also ideally suited to rocky strata conditions where deep digs are not be possible. The range is fully approved to EN12566 Part 1 standard and is 99.7 per cent efficient at retaining solids in the tank.

“The Sigma has been designed to make installations more cost-effective and easier for builders and installers,” says Dave Vincent Commercial Director. “Not only is it a shallower dig, it can be backfilled with peashingle rather than concrete on dry sites making the installation a lot cheaper. All in all, we calculate that it’s possible to save up to £300 installing a Sigma, based on a typical 2,800 litre septic tank, which we think will be welcomed.”

Klargester’s experienced sales advisors can offer comprehensive advice on percolation testing and installation guidance and delivery is free anywhere in the UK – usually within three days of the product being ordered.

The Sigma shallow dig septic tank comes in a wide range of sizes from 2,800 to 9,100 litres, with a standard invert height across the range of just 500mm.

Dave continues: “We would always recommend a sewage treatment plant as the first option for private sewage arrangements because of their greater effectiveness in treating the sewage. Septic tanks are not a universal solution for all off-mains drainage applications, but we recognise there is still a demand for them and have worked hard to provide a modern, improved product for our customers. If in any doubt about the suitability of a septic tank we offer a free site visit and will explain the options to the customer.”