Welcome to the latest edition of our expert insights into sewage treatment systems. Over the past25 years, we have aided thousands of clients with selecting the most cost-effective and efficient solutions for sewage treatment.

In an industry where systems become obsolete each year and new models continually emerge, one system has consistently proven itself as a top performer: the Klargester BioDisc. With its unmatched reliability and exceptional performance, the Klargester BioDisc has once again secured its place at the forefront of our recommendations in 2025.

Read on as we delve into the latest advancements in sewage treatment technology and explore why the Klargester BioDisc remains the leading choice for wastewater solutions amidst a rapidly evolving landscape.

The Klargester BioDisc is our #1 choice for domestic wastewater treatment again in 2025. The BioDisc offers unrivalled reliability, effeciency and is an ecologically safe solution for anyone with off-mains drainage.

The BioDisc has the lowest maintenance costs of any packaged treatment plant. This year a BA BioDisc Gravity system will cost approx. £160 in electric to run based on the current average rate of 31.8p/ kWh.

The Klargester BioDisc is available from Direct Drainage with FREE delivery to site. The current lead time (Jan 2025) is 5-7 working days. The BioDisc comes with a 7 year warranty when installation and servicing is carried out by a Klargester accredited supplier (which we are!)

Lastly, Direct Drainage is a supplier of all spare parts for Klargester BioDisc Sewage Treatment Systems, many of which are available for next day delivery. 

The Clearwater BioAir (Formerly Klargester BioAir) uses aerated technology which has many appealing benefits and is economically priced.

The Clearwater BioAir which replaces the well-respected BioFicient sewage treatment plant, removes the need to use plastic media as part of the treatment process and therefore supports our commitment to our planet passionate objectives, by reducing plastic use. 

The Harlequin Hydrocrear range is becoming a firm favourite in the UK. They have recently started manufacturing bigger more commercial sized units as a result of huge success with their domestic range.

The Harlequin Hydroclear tank is compact and easy to install, has low running costs and a lead time of only 3-5 working days! Delivery is free when purchased through Direct Drainage. This year a Harlequin Hydroclear HC6 Gravity system will cost approx. £139 in electric to run based on the current average rate of 31.8p/ kWh.

This is another basic airflow tank with minimal moving parts to go wrong!

A Clenviro MATRIX Sewage Treatment Plant is the perfect solution in restricted areas where a sewage treatment system needs to be installed on a driveway or under concrete. It provides an extremely safe, efficient, reliable and cost effective solution to sewage disposal. 

Our servicing engineers love the MATRIX for its easy access as the manhole is big enough to see everything inside without having to climb into the tank.

The MATRIX has very low running costs, similar to the other airflow systems with a high quality air compressor and a staggering structural warranty of 25 years.

The MATRIX range from Clenviro is available from Direct Drainage at the best price guaranteed.

The Tricel Novo is becoming an installers dream tank. They are usually delivered between 3-5 working days and couldn't be easier to install and maintain.

The Tricel Novo is manufactured by sheet-moulded composite (SMC), one of the strongest glass-reinforced plastic materials available. This alows Tricel to offer a 20 year structural warranty and a 3 year mechanical parts warranty.

Get the Tricel Novo from Direct Drainage for the best price guaranteed today.